[Solved] BSNL TTA/JE Special Recruitment Drive (SRD) 2016 Question Paper

[Solved] BSNL TTA/JE Special Recruitment Drive (SRD) 2016 Question Paper

August 01, 2016

BSNL TTA/JE 2016 Solved Question Paper With Answers :

EXAM DURATION : 3:00 Hrs
TOTAL NO OF QUESTIONS : 200

EXAM DATE : 21 February 2016
SUBJECT NAME : SRD TTA Recruitments 2016
TOTAL MARKS : 200

Question 1. Which Indian subsidy is world's largest direct benefit scheme?
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) :0.25)
Options:
a) LPG
b) Fertilizers
c) Food for work
d) Diesel
Correct Answer: LPG

Question 2. To whom, highest civilian award of the Indian Government " Bharat Ratna" was awarded during 2015
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) :0.25)
Options:
a) Sri. Prakash Singh Badal
b) Sri LK Advani
c) Smt. MS Subbulakshmi
d) Sri Atal Bihari Vajpayee
Correct Answer: Sri Atal Bihari Vajpayee

Question 3. The 24Km
long Hirakud Dam is located at the border of
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Orissa and Bihar
b) Orissa and Madhya Pradesh
c) Bihar and west Bengal
d) Madhya Pradesh and Jharkand
Correct Answer: Orissa and Madhya Pradesh

Question 4. Moon revolves round the earth in days
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 27
b) 27 ⅓
c) 27 ⅔
d) 28
Correct Answer: 27 ⅓

Question 5. How many hours is IST ahead of GMT
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) +5:00
b) +5:30
c) +6:00
d) +6:30
Correct Answer: +5:30

Question 6. At which place DRDO has set up the world's highest Terrestrial Research Centre?
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Leh
b) Srinagar
c) Ladakh
d) Anantnag
Correct Answer: Ladakh

Question 7. Pick the correct Antonym for the word "Validate"
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Disprove
b) Approve
c) Prove
d) Authentic
Correct Answer: Disprove

Question 8. Pick the most suitable one word substitute: One who is unable to pay his debts
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Optimist
b) Lapidist
c) Fatalist
d) Insolvent
Correct Answer: Insolvent

Question 9. The author of the book " Rebooting Government"
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Pranab Mukheree
b) Arun Jaitley
c) Manmohan Singh
d) Nandan Nilekani
Correct Answer: Nandan Nilekani

Question 10. The state in India with less literacy rate as per 2011 census
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Rajasthan
b) Jharkand
c) Arunachal Pradesh
d) Bihar
Correct Answer: Bihar

Question 11. He is ____ European
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) a
b) an
c) The
d) None of these
Correct Answer: a

Question 12. The President of India can be removed from his office on the recommendation of the
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Supreme Court
b) Chief Justice of India
c) Lok Sabha
d) Two Houses of Parliament
Correct Answer: Two Houses of Parliament

Question 13. The study of earth quake is known as
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Sialogy
b) Seismology
c) Ecology
d) Theology
Correct Answer: Seismology

Question 14. The distance between the Two stumps of cricket pitch is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 18 yards
b) 22 meters
c) 18 meters
d) 22 yards
Correct Answer: 22 yards

Question 15. The total number of digits in UIDAI Aadhar
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 12
b) 13
c) 14
d) 15
Correct Answer: 12

Question 16. Pick the synonym for the word "Zeal"
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Hazardous
b) Connotation
c) Passion
d) Initiation
Correct Answer: Passion

Question 17. Which of the following personalities is known as "Metro Man"?
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) PV Chandran
b) Elattuvalapil Sreedharan
c) Tessy Thomas
d) Man Mohan sarma
Correct Answer: Elattuvalapil Sreedharan

Question 18. Which Technology Giant has agreed to provide wifi
hotspot at 500 Railway stations in India
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Microsoft
b) Google
c) IBM
d) Wipro
Correct Answer: Google

Question 19. Find the angle between two vectors a and b with magnitudes √3 and 2 respectively having a.b=√6
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 45°
b) 90°
c) 180°
d) 30°
Correct Answer: 45°

Question 20. The phenomenon of bending of light at the surface of separation of two media having different R.I is called
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) :0.25)
Options:
a) Deflection of Light
b) Reflection of Light
c) Refraction of Light
d) absorption of Light
Correct Answer: Refraction of Light

Question 21. Race around condition occur in JK Flip Flop is due to
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) The clock time period is less than propagation delay
b) The clock time period is greater than propagation delay
c) Due to triggering
d) None
Correct Answer: The clock time period is greater than propagation delay

Question 22. The most stable sine wave oscillator with most simple circuit is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Colpits
b) Armstrong
c) Phaseshift
Circuit
d) Crystal
Correct Answer: Crystal

Question 23. If θ is the angle between Two lines whose slopes are m1 & m2 , then Tan θ = _
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) m1 m2
b) m1 + m2
c) (m1 m2)
/ (1+ m1 m2)
d) (m1 m2)
/ (1m1
m2)
Correct Answer: (m1 m2)
/ (1+ m1 m2)

Question 24. The vectors having the same initial point are called
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Position vector
b) Free vector
c) CoInitial
Vector
d) Unit Vector
Correct Answer: CoInitial
Vector

Question 25.
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) cosechx cothx
b) cosechx
cothx
c) sechx
cothx
d) sechx cothx
Correct Answer: cosechx
cothx

Question 26. The sum of two unit vectors is a unit vector. The magnitude of their difference is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2
b) √ 3
c) √ 2
d) 1
Correct Answer: √ 3

Question 27. Isotopes are atoms that have
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Same atomic number but different atomic mass
b) Same atomic mass but different atomic number
c) Same Number of Protons but different number of electrons
d) None
Correct Answer: Same atomic number but different atomic mass

Question 28. The area of the circle with centre at (1,2) and passing through (4,6) is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 5π sq. units
b) 25π sq. units
c) 29π sq. units
d) None
Correct Answer: 25π sq. units

Question 29. When the Input to a seven segment decoder is "0100" the number on display will be
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )

Options:
a) 0
b) 2
c) 4
d) 9
Correct Answer: 4

Question 30. A semi conductor when placed at 0° K, will act as
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Insulator
b) Conductor
c) Semiconductor
d) Metal
Correct Answer: Insulator

Question 31. Positive feedback is used in
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Amplifiers
b) Rectifiers
c) Oscillators
d) None
Correct Answer: Oscillators

Question 32. The laser produced from stimulated emission has the following characteristic
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Monochromatic
b) Coherent
c) very narrow and collimated ray
d) All of the above
Correct Answer: All of the above

Question 33. Mass and weight __
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) are same quantities
b) Are different quantities
c) No relation between them
d) All of the above
Correct Answer: Are different quantities

Question 34. Sound cannot travel through
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Gases
b) Vacuum
c) solids
d) Liquids
Correct Answer: Vacuum

Question 35. In a stationary wave the distance between a node and its successive antinode is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) l/2
b) l/4
c) l/8
d) l
Correct Answer: l/4

Question 36. The Flip Flop which acts as Frequency divider is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) SR Flip Flop
b) D Flip Flop
c) T Flip Flop
d) None
Correct Answer: T Flip Flop

Question 37. The Odd Parity is generated by
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) ExOR
Gate
b) ExNOR
Gate
c) NOT Gate
d) All the above
Correct Answer: ExNOR
Gate

Question 38. is a dimensionless quantity .
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Gravity
b) Specific Gravity
c) Density
d) acceleration
Correct Answer: Specific Gravity

Question 39. Shift left by 'n' positions in Shift Register is equivalent to _
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Multiplication by "2n"
b) Addition by "2n"
c) Division by "2n"
d) None of the above
Correct Answer: Division by "2n"

Question 40. Reluctance in Magnetic circuits is analogues to in electric circuit
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Resistance
b) Voltage
c) current
d) Power
Correct Answer: Resistance

Question 41. The angle between the pair of straight lines x2 2xy+
y2 = 0
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 45°
b) 30°
c) 120°
d) 90°
Correct Answer: 90°

Question 42. In a classB
amplifier the output current flows for
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 90°
b) 180°
c) More than 180° and less than 270°
d) 360°
Correct Answer: 180°

Question 43. Access Time in Memories is equal to
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Latency Time
b) Seek Time
c) Transfer Time
d) sum of all the above
Correct Answer: sum of all the above

Question 44. An equivalent decimal number of (234.55)8 is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) (106.703)10
b) (156.703)10
c) (146.703)10
d) (308.703)10
Correct Answer: (156.703)10

Question 45. The relative permiabilty μr is given by
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) B / μo . H
b) B/H
c) H/B
d) None
Correct Answer: B / μo . H

Question 46. when a lead acid cell is recharged
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) The anode becomes dark chocolate brown colour
b) Voltage rises
c) Energy is absorbed by the cell
d) All of the above
Correct Answer: All of the above

Question 47. If AT= A1
, where A is real matrix , then A is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Normal
b) Symmetric
c) Hermitian
d) Orthogonal
Correct Answer: Orthogonal

Question 48. An ideal voltage source will charge an ideal capacitor
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) in Infinite time
b) Exponentially
c) Instantaneously
d) None of the above
Correct Answer: Instantaneously
Candidate Answer: Exponentially
Question 49. Divide by 78 counter can be realized using
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 6 number of mod13
counters
b) 13 number of mod6
counters
c) 13 number of mod13
counters
d) one mod13
counter followed by one mod6
counter
Correct Answer: one mod13
counter followed by one mod6
counter

Question 50. In a stepup
transformer, the turn's ratio is 1:2. A Leclancge cell (emf 1.5V) is connected across the primary. The voltage across the secondary is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 3.0 V
b) 0.75 V
c) 0 V
d) 1.5 V
Correct Answer: 0 V

Question 51. As frequency increases, the magnetic flux inside a conductor
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Increases
b) Decreases
c) Remains constant
d) None of the above
Correct Answer: Decreases

Question 52. Nortan's Theorem results in
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) a Current source with an impedance in Parallel
b) a Voltage source with an impedance in series
c) a Voltage source alone
d) a Current source alone
Correct Answer: a Current source with an impedance in Parallel

Question 53. In an PN junction depletion layer is created due to
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Diffusion of ions
b) Diffusion of Minority carriers
c) Diffusion of Majority carriers
d) Diffusion of Minority & Majority carriers
Correct Answer: Diffusion of Majority carriers

Question 54. In a schmitt Trigger UTP=12V, LTP=8V, the hysterises VH is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 12V
b) 8V
c) 4V
d) 20V
Correct Answer: 4V

Question 55. Logic expressions can be simplified by using
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Boolean Algebra Method
b) Karnaugh map
Method
c) Tabulation Method
d) Any of the above methods
Correct Answer: Any of the above methods

Question 56. These are used for bloodless surgery
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Anesthetic
b) Fiberoptics
c) Lasers
d) None
Correct Answer: Lasers

Question 57. Kg m2 per sec is the unit of
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) energy
b) Momentum
c) Angular Momentum
d) Power
Correct Answer: Angular Momentum

Question 58. The trigonometric Fourier series of a periodic time function can have only
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Cosine terms
b) Sine terms
c) Cosine & Sine terms
d) Cosine & DC terms
Correct Answer: Cosine & Sine terms

Question 59. The loop gain of a Schmitt Trigger is always
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 0
b) Less than 1
c) Greater than 1
d) None
Correct Answer: Greater than 1

Question 60. Five memory chips of 16 X 4 size have their address buses connected together. This system will be of size
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 16 X 16
b) 16 X 20
c) 20 X 16
d) 16 X 64
Correct Answer: 16 X 20

Question 61. "The direction of an induced emf is such that it will always opposes the change that is causing" This law is called as
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Kirchoffs Laws
b) Lenzs Law
c) Faradays Law
d) None
Correct Answer: Lenzs Law

Question 62. For a 12 bit A/D converter the range of input signal is 0 to +10V. The voltage corresponding to 1 LSB will be
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 0
b) 0.0012V
c) 0.0024V
d) 0.833V
Correct Answer: 0.0024V

Question 63. A string of 4 bits is called as
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Bit
b) Byte
c) Word
d) Nibble
Correct Answer: Nibble

Question 64.
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a)
b) ax +c
c) Log a +c
d)
Correct Answer:
Candidate Answer:

Question 65. The number of 4:1 MUX required to make 64:1 MUX is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 16
b) 64
c) 20
d) 21
Correct Answer: 21

Question 66. Two long parallel conductors carrying currents in opposite directions__ each other
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Attract
b) Repel
c) Noeffect on
d) None of the above
Correct Answer: Repel

Question 67. The 9's complement of a Decimal digit is the
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1's Complement of the Excess3
code for the Digit
b) 2's Complement of the Excess3
code for the Digit
c) 1's Complement of the Excess4
code for the Digit
d) 2's Complement of the Excess4
code for the Digit
Correct Answer: 1's Complement of the Excess3
code for the Digit

Question 68. which of the following configuration is used for Emitter follower Amplifier
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Common Base
b) Common Emitter
c) Common Collector
d) None
Correct Answer: Common Collector

Question 69. In a transformer, the ratio of primary to secondary is 9:4. If power input is P, what will be the ratio of power output to the power input
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 4:9
b) 9:4
c) 5:4
d) 1:1
Correct Answer: 1:1

Question 70. A network which contain one or more than one source of emf is known as
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Active Network
b) Passive Network
c) Electric Network
d) None of the above
Correct Answer: Active Network

Question 71. The power consumed by a pure capacitor is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1 w
b) 0.5 W
c) ∞ W
d) 0 w
Correct Answer: 0 w
Candidate Answer: 0 w

Question 72. In a Nchannel
JFET, Drain current is maximum when Gate Voltage VGS is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) equal to +VDD
b) morethan to + VDD
c) equal to "0 volts"
d) All the above
Correct Answer: equal to "0 volts"

Question 73. Electrons in atoms and molecules can change energy levels by emitting or absorbing
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Protons
b) Photons
c) electrons
d) All of the above
Correct Answer: Photons
Candidate Answer: All of the above
Question 74. Echo is heard due to
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Refraction
b) Scattering
c) Reflection
d) Interference
Correct Answer: Reflection
Candidate Answer: Interference
Question 75. Wiith reference to the early effect in Bipolar Junction Transistor (BJT), the phenomenon of Punch through occurs when _
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) effective Collector width is brought to '0'
b) effective Base width is brought to '0'
c) effective emitter width is brought to '0'
d) None
Correct Answer: effective Base width is brought to '0'
Candidate Answer: effective Base width is brought to '0'
Question 76. Which of the following is true with respect to DC Amplifier ( Direct coupled amplifier)
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Capable of amplifying DC signals
b) is designed without use of any coupling capacitors at input
c) Poor Thermal stabilty
d) All the above
Correct Answer: All the above

Question 77.
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a)
b)
c)
d)
Correct Answer:

Question 78. Binary numbers can be converted into Hexadecimal numbers by grouping bits into group of starting from _and represented each group as
Hexadecimal number
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Three bits, Right Most bit
b) Three bits, Left Most bit
c) Four bits, Right Most bit
d) Sixteen bits, Left Most bit
Correct Answer: Four bits, Right Most bit
Candidate Answer: Four bits, Right Most bit
Question 79. The Battery will get warm, when we try to send too much current thorugh battery. This is mainly due to
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Battery manufacturing defect
b) Due to defect of connected Load
c) Internal Resistance of the Battery
d) None
Correct Answer: Internal Resistance of the Battery
Candidate Answer: Internal Resistance of the Battery
Question 80. The induction coil works on the principle of
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) SelfInduction
b) Mutual Induction
c) ampere's Rule
d) Flemings Right Hand rule
Correct Answer: Mutual Induction
Candidate Answer: Mutual Induction
Question 81. Unit distance codes are also called as
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Cyclic Codes
b) Non Cyclic codes
c) Error codes
d) All of the above
Correct Answer: Cyclic Codes
Candidate Answer: Cyclic Codes
Question 82. Leakage current in the Silicon semicondcutor is in the order of
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Amps
b) milli Amps
c) micro Amps
d) nano Amps
Correct Answer: nano Amps
Candidate Answer: nano Amps
Question 83. The capacitive effects of a reverse biased PN Junction are described by
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Storage capacitance
b) Diffusion capacitance
c) Junction capacitance
d) All of the above
Correct Answer: Junction capacitance
Candidate Answer: Storage capacitance
Question 84. which of the following is not a characteristic of ideal Opearational Amplifier
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) BW = ∞
b) Perfect balance V0 = 0 when V1 = V2
c) Gain is ∞
d) Input resistance is Zero
Correct Answer: Input resistance is Zero
Candidate Answer: Input resistance is Zero
{BSNLCAFE}
Question 85. The distance between the parallel lines 4x+6y+4=0 and 4x+6y+5=0 is
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1 / √ 52
b) √ 52
c) 1 / √ 2
d) 1
Correct Answer: 1 / √ 52
Candidate Answer: √ 52
Question 86. Isotopes are atoms that have
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Same atomic number but different atomic mass
b) Same atomic mass but different atomic number
c) Same Number of Protons but different number of electrons
d) None
Correct Answer: Same atomic number but different atomic mass
Candidate Answer: Same atomic mass but different atomic number
Question 87. The stabilization factor "Sico" of Fixed bias circuit is
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Sico= (1+β)
b) Sico= 1
c) Sico= β
d) None
Correct Answer: Sico= (1+β)
Candidate Answer: Sico= (1+β)
Question 88. In complex numbers, the value of i37 =
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 37i
b) i
c) i
d) 37i
Correct Answer: i
Candidate Answer: i
Question 89. The vertex of the parabola y2 2y+
8x23
= 0
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) ( 3, 1 )
b) ( 1, 3 )
c) ( 1,
3 )
d) ( 1, 3
)
Correct Answer: ( 3, 1 )
Candidate Answer: ( 1,
3 )
Question 90. Kirchoff's Voltage Law is known as
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Conservation of Charge
b) Conservation Energy
c) Both
d) None
Correct Answer: Conservation Energy
Candidate Answer: Conservation Energy
Question 91. Waves traveling through a solid medium are _
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Transverse waves
b) Longitudinal waves
c) either of the both
d) None
Correct Answer: either of the both
Candidate Answer: Longitudinal waves
Question 92. Two capacitors of 2 μF and 3μF are connected in series across 10V. The potential difference across the 2 μF capacitor will be
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
{BSNLCAFE}
Options:
a) 4V
b) 6V
c) 10V
d) 0V
Correct Answer: 6V
Candidate Answer: 4V
Question 93. The current in capacitive circuits _ the voltage
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Lags
b) Leads
c) Inphase with
d) None of the above
Correct Answer: Leads
Candidate Answer: Leads
Question 94. A 'n' bit flash type ADC requires maximum of to complete conversion
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) "n" Clock pulses
b) "2n+1" Clock pulses
c) one clock pulse
d) "2n1"
Clock pulses
Correct Answer: one clock pulse
Candidate Answer: one clock pulse
Question 95. which one of the following is not a unit of time
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Micro second
b) Second
c) Year
d) Light year
Correct Answer: Light year
Candidate Answer: Light year
Question 96. To convert Celsius (Centigrade) to Fahrenheit
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) multiply by 1.8 and add 32
b) subtract 32 and divide by 1.8
c) multiply by 32 and add 1.8
d) subtract 1.8 and divide by 32
Correct Answer: multiply by 1.8 and add 32
Candidate Answer: subtract 32 and divide by 1.8
Question 97. If the vectors 2i3j+
k , 3i+xj+k are orthogonal then x=
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2
b) 4
c) 2
d) 1
Correct Answer: 4
Candidate Answer: 2
Question 98. The number of NAND Gates required to implement ExOR
and ExNOR
gates are__respectively
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2 and 3
b) 3 and 2
c) 4 and 5
d) 4 and 3
Correct Answer: 4 and 5
Candidate Answer: 4 and 5
Question 99. Very smalltime
intervals are accurately measured by the
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Pulsars
b) White dwarfs
c) Atomic clocks
d) Quartz clocks
Correct Answer: Atomic clocks

Question 100. A coil having an inductance of 150 mH is carrying a current of 5 Amp. If the current is reduced to zero in 1 milli seconds, the selfinduced
emf will be
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 125V
b) 375V
c) 500V
d) 750V
Correct Answer: 750V
Candidate Answer: 750V
Question 101. The delay line in CRO is placed after
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Horizontal Amplifier
b) Vertical Amplifier
c) Trigger circuit
d) Power supply
Correct Answer: Vertical Amplifier
Candidate Answer: Horizontal Amplifier
Question 102. An Analog transducer has range 0 10V.
Calculate bits of an A/D converter if the resolution is 5 mV
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 10
b) 9
c) 11
d) None
Correct Answer: 11
Candidate Answer: 11
Question 103. An Amber LED on Logic probe indicates
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) High state
b) Low state
c) Pulse
d) None
Correct Answer: Pulse
Candidate Answer: High state
Question 104. when the DC voltmeter is connected polarities reversed
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) The pointer deflects upscale
b) The pointer deflects downscale
c) The pointer remains stationary
d) None
Correct Answer: The pointer deflects downscale
Candidate Answer: The pointer deflects downscale
Question 105. An accurate voltmeter must have an internal impedance of
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Very Low value
b) Low value
c) Very High Value
d) Zero
Correct Answer: Very High Value
Candidate Answer: Very High Value
Question 106. Moving processes from main memory to disk is called
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Scheduling
b) Catching
c) Swapping
d) Spooling
Correct Answer: Swapping
Candidate Answer: Swapping
Question 107. ORACLE is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
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Options:
a) an Operating system
b) a RDBMS
c) an Interpretor
d) A Compiler
Correct Answer: a RDBMS
Candidate Answer: A Compiler
Question 108. Repeaters function in the _ layer
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Physical
b) DataLink
c) Network
d) Session
Correct Answer: Physical
Candidate Answer: Network
Question 109. __ antenna is most frequently used as reference antenna
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) YagiUda
b) Parabolic
c) Horn
d) None
Correct Answer: Horn
Candidate Answer: Horn
Question 110. The _ is set (to 1) if there is a carry from the low nibble (lowest four bits) to the high nibble (upper four bits), or a borrow from the high nibble
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Carry flag
b) Auxiliary carry flag
c) Sign flag
d) Parity flag
Correct Answer: Auxiliary carry flag
Candidate Answer: Auxiliary carry flag
Question 111. Two terminals constitute a "Port", if they satisfy port condition. The port condition indicates
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Current entering one terminal is equal to the current leaving the other terminal
b) Current entering one terminal & leaving the other terminal is different
c) No current must enter and leave a port
d) All the above
Correct Answer: Current entering one terminal is equal to the current leaving the other terminal
Candidate Answer: Current entering one terminal is equal to the current leaving the other terminal
Question 112. A 75 ohm line is terminated to a load of 100 ohms, and has some incident power. Percentage of reflected power is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2%
b) 100%
c) 14%
d) 20%
Correct Answer: 14%
Candidate Answer: 14%
Question 113. The IF of standard FM Receivers using the 88 to 108 MHz band is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 455 KHz
b) 26 MHz
c) 70 MHz
d) 10.7 MHz
Correct Answer: 10.7 MHz
Candidate Answer: 10.7 MHz
Question 114. The effect used in Pointing Vector Wattmeters, for their opeartion is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Heating effect
b) Induction effect
c) Hall effect
d) None

Correct Answer: Hall effect
Candidate Answer: Induction effect
Question 115. Which of the following is disadvantage of parallel data transmission
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Speed is low
b) Data cannot flow in both directions
c) cost of providing many registers, conductors etc is considerable
d) All the above
Correct Answer: cost of providing many registers, conductors etc is considerable
Candidate Answer: cost of providing many registers, conductors etc is considerable
Question 116. Armstrong modulator generates
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) AM Signal
b) FM signal
c) PM Signal
d) both B & C
Correct Answer: FM signal
Candidate Answer: FM signal
Question 117. The capacitors used in singlephase
motors have no
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) definite value
b) Polarity marking
c) voltage rating
d) dielectric
medium
Correct Answer: Polarity marking
Candidate Answer: Polarity marking
Question 118. A UART is usually an individual (or part of an) integrated circuit used for _ communications over a computer or peripheral device
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Serial
b) Parallel
c) Both
d) None
Correct Answer: Serial
Candidate Answer: Serial
Question 119. How many OSI Layers are covered in X.25 standard
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2
b) 3
c) 5
d) 7
Correct Answer: 3
Candidate Answer: 3
Question 120. Typed matter/document is to be saved in_
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Folder
b) File
c) HardDisk
d) CDROM
Correct Answer: File
Candidate Answer: File
Question 121. The type of computers which can execute millions of instructions and billions of data per second
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Laptop
b) Mini Computer
c) MainFrame computer
d) Personal Computer
Correct Answer: MainFrame computer
Candidate Answer: MainFrame computer
Question 122. Ammeters are always connected in _
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( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Series
b) Parallel
c) either
d) None
Correct Answer: Series
Candidate Answer: Parallel
Question 123. When AM receiver is tuned to 1200 KHz, the Local oscillator frequency is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1200 KHz
b) 1655 KHz
c) 2110 KHz
d) 745 KHz
Correct Answer: 1655 KHz
Candidate Answer: 1655 KHz
Question 124. With respect to Opcode "DAD", which of the following is correct
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) It stands for Decimal adjust accumulator
b) it adds 16bit
data directly in register pairs
c) Decrement source by 1
d) Increment source by 1
Correct Answer: it adds 16bit
data directly in register pairs
Candidate Answer: It stands for Decimal adjust accumulator
Question 125. The typical value Zo I.e. Characteristic impedance of a Coaxial cable is
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 75 ohms
b) 300 ohms
c) 100 ohms
d) 600 ohms
Correct Answer: 75 ohms
Candidate Answer: 75 ohms
Question 126. A transmission line has reflection coefficient "k" equal to 0.2. The VSWR is
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 0
b) 0.2
c) 0.6
d) 1.5
Correct Answer: 1.5
Candidate Answer: 0.6
Question 127. when a unit step input is applied to a perfect integrator, the output will be _
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) bounded
b) unbounded
c) remains constant
d) is unity
Correct Answer: unbounded
Candidate Answer: unbounded
Question 128. If a Transmission line is terminated with a resistance equal to its characteristic impedance
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) The line loss will be maximum
b) The input impedance will be twice the terminating resistance
c) The Standing Wave Ratio will be minimum
d) The Standing Wave Ratio will be maximum
Correct Answer: The Standing Wave Ratio will be minimum
Candidate Answer: The Standing Wave Ratio will be maximum
Question 129. In a feedback system, output is a function of
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Output and input
b) Input and feedback signal
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c) Reference and output
d) None
Correct Answer: Input and feedback signal
Candidate Answer: Input and feedback signal
Question 130. The term amperehour(
Ah) is associated with
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) rectifiers
b) Transformers
c) Electromagnets
d) Storage cells
Correct Answer: Storage cells
Candidate Answer: Storage cells
Question 131. In a critically damped system, the damping factor of the system is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Zero
b) Less than unity
c) Unity
d) greater than unity
Correct Answer: Unity
Candidate Answer: Unity
Question 132. VSWR for an ideal Antenna is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 0
b) ¥
c) 1
d) Zo
Correct Answer: 1
Candidate Answer: 0
Question 133. Compiler converts
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Source code to Higher Language
b) Object code to source code
c) Source code to Machine code
d) One source code to another source code
Correct Answer: Source code to Machine code
Candidate Answer: Source code to Machine code
Question 134. In a Nyquist criteria, the roots of characteristic equation are given by
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Poles of the open loop transfer function
b) Zeroes of the open loop transfer function
c) Poles of the Closed loop transfer function
d) Zeroes of the closed loop transfer function
Correct Answer: Poles of the open loop transfer function
Candidate Answer: Poles of the Closed loop transfer function
Question 135. Each Push and POP operation involves ____ at a time
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) a single Bit
b) a single Nibble
c) a single Byte
d) a Double Byte
Correct Answer: a Double Byte

Question 136. When a signal is given at "RESET IN" input of a microprocessor, then
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Resets the program counter to Zero
b) Resets the Interrupt enable flag
c) Resets HLDA
d) All of the above
Correct Answer: All of the above

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Question 137. In a parallel circuit all components must _
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) have same potential difference across them
b) have the same value
c) carry the same current
d) All the above
Correct Answer: have same potential difference across them

Question 138. The standing wave ratio (SWR) equal to unity implies that
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) The transmission line is open circuited
b) The transmission line is short circuited
c) The transmission line characteristic impedance is Zero
d) The transmission line characteristic impedance is equal to Load impedance
Correct Answer: The transmission line characteristic impedance is equal to Load impedance

Question 139. A 3phase
50HZ, 6 pole squirrel cage induction motor will run at a syncronous speed of ___
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 960 rpm
b) 1000 rpm
c) 1500 rpm
d) 1600 rpm
Correct Answer: 1000 rpm

Question 140. When a computer is first turned on or restarted a special type of absolute loader is executed called a
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Compile and Go 'Loader
b) PreBoot Loader
c) Relating Loader
d) Bootstrap Loader
Correct Answer: Bootstrap Loader
Candidate Answer: Bootstrap Loader
Question 141. If the Data is present in the instruction, such type of instructions are called as
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Direct addressing
b) Indirect addressing
c) Register addressing
d) Immediate addressing
Correct Answer: Immediate addressing
Candidate Answer: Immediate addressing
Question 142. The bit rate of a digital communication system is 34 M bits/sec. The modulation scheme used is QPSK. The baud rate of the system is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 8.5 M bit/sec
b) 17 M bit/sec
c) 34 M bit/sec
d) 68 M bit/sec
Correct Answer: 17 M bit/sec
Candidate Answer: 17 M bit/sec
Question 143. A connecting probe in CRO causes
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) loading
b) distortion in the wave
c) both
d) None
Correct Answer: None
Candidate Answer: distortion in the wave
Question 144. One of the following is a direct entry input devices
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Keytodiskette
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b) Punched card
c) Computer terminal
d) Mouse
Correct Answer: Mouse
Candidate Answer: Mouse
Question 145. Noise figure is used as figure of merit of
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Oscillator
b) Amplifier
c) Modulator
d) Isolator
Correct Answer: Amplifier
Candidate Answer: Oscillator
Question 146. The speed at which serial data is transmitted is referred to
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) bps
b) Baud rate
c) either 1 or 2
d) None
Correct Answer: either 1 or 2
Candidate Answer: either 1 or 2
Question 147. After reset, CPU begins execution of instruction from which memory address
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 0000H
b) 0001H
c) 8000H
d) FFFFH
Correct Answer: 0000H

Question 148. Consider the following program fragment
DELAY: LXI H, 0010H
LOOP: DCX H
MOV A, L
ORA H
XRA A
JNZ Loop
RET
The number of times loop will be executed is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 16
b) 10
c) 1
d) Infinite
Correct Answer: 1

Question 149. while calculating our RouthHurwitz,
If we have a row of all zeros, the row directly above it is known as the
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Auxiliary Polynomial
b) Polynomial
c) Transfer function
d) None
Correct Answer: Auxiliary Polynomial
Candidate Answer: Auxiliary Polynomial
Question 150. PMMC (D'Arsonval) is used for
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) AC current
b) DC Voltage
c) AC Voltage
d) All of the above
Correct Answer: DC Voltage
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Candidate Answer: DC Voltage
Question 151. Which of the following IP address is not assigned to any node by network planner
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 192.0.0.0
b) 127.0.0.1
c) 128.0.0.1
d) none
Correct Answer: 127.0.0.1
Candidate Answer: 192.0.0.0
Question 152. Characteristic impedance is also known as
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Driving point impedance
b) Surge impedance
c) Iterative impedance
d) All of the above
Correct Answer: Surge impedance
Candidate Answer: Surge impedance
Question 153. In discrete time _ is used to obtain transfer function
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Laplace Transform
b) ZTransform
c) Both
d) None
Correct Answer: ZTransform
Candidate Answer: ZTransform
Question 154. The device which does not have frequency dependent properties on its own is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Inductor
b) Capacitor
c) Resistor
d) All the above
Correct Answer: Resistor
Candidate Answer: Resistor
Question 155. A speech signal occupying the BW of 300 Hz to 3KHz, is converted into PCM format for use in digital communication. If the sampling frequency is 8 KHz
and each sample is quantized into 256 levels, then the output bit rate will be
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2048 Kbps
b) 1024 Kbps
c) 256 Kbps
d) 64 Kbps
Correct Answer: 64 Kbps
Candidate Answer: 64 Kbps
Question 156. When two frequencies F1 & F2 are applied to the Horizontal & Vertical Amplifiers respectively of a CRO, a "circle" is appeared on the CRT/ CRO screen.
With reference to the Lissajous figures, the ratio of frequencies F1 & F2 is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2:1
b) 1:2
c) 1:1
d) 3:1
Correct Answer: 1:1
Candidate Answer: 1:1
Question 157. _____ is an electronic device that reduces the amplitude or power of a signal without appreciably distorting its waveform.
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Amplifier
b) Attenuator
c) Mixer
d) All the above
Correct Answer: Attenuator
Candidate Answer: Attenuator
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Question 158. Basic Interface in ISDN refers to the transmission speed of
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 64 kbps
b) 128 kbps
c) 144 kbps
d) 1.544 Mbps
Correct Answer: 144 kbps
Candidate Answer: 1.544 Mbps
Question 159. When dealing with signed numbers, micro processors use _
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1' complement
b) shift and add
c) 2's complement
d) end around carry method
Correct Answer: 2's complement
Candidate Answer: end around carry method
Question 160. The FSK (with respect to HF Radio transmissions) has two tones which are generally
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 170 KHz apart
b) 170 Hz apart
c) 150 KHz apart
d) 150 Hz apart
Correct Answer: 170 Hz apart
Candidate Answer: 170 KHz apart
Question 161. The margin between actual gain and critical gain is a measure of
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Relative stability
b) absolute stabilty
c) sensitivity
d) Gain Margin
Correct Answer: Gain Margin
Candidate Answer: Gain Margin
Question 162. The maximum speed at which the data can be transmitted on each channel of a standard PCM stream is
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 64 kbps
b) 128 kbps
c) 2 Mbps
d) 4 Mbps
Correct Answer: 64 kbps
Candidate Answer: 2 Mbps
Question 163. Wave guides are generally made of
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Gold
b) Bronz or aluminium
c) PVC
d) HDPE
Correct Answer: Bronz or aluminium
Candidate Answer: HDPE
Question 164. For a stable system, the roots of the characteristic equation must lie on
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Real Axis only
b) Imaginary axis only
c) Left Half plane
d) Right Half plane
Correct Answer: Left Half plane
Candidate Answer: Left Half plane
Question 165. When an instruction is read from the memory, it is called
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Memory Read cycle
b) Fetch cycle
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c) Instruction cycle
d) Memory write cycle
Correct Answer: Fetch cycle
Candidate Answer: Fetch cycle
Question 166. ..........is an electrical device that converts direct current (DC) to alternating current (AC)
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Rectifier
b) cycloconverter
c) Inverter
d) All the above
Correct Answer: Inverter
Candidate Answer: Inverter
Question 167. Any physical system which does not automatically correct for variation in its output is called
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Closed Loop System
b) Open Loop System
c) Unstable system
d) Stable system
Correct Answer: Open Loop System
Candidate Answer: Open Loop System
Question 168. SpreadSpectrum
multiplexing is also know as
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Time division Multiplexing
b) Frequency division Multiplexing
c) Code division Multiplexing
d) All the above
Correct Answer: Code division Multiplexing
Candidate Answer: Frequency division Multiplexing
Question 169. Signature analysers are able to detect
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) digital waveform patterns
b) digital Logic patterns
c) digital Logic state
d) None
Correct Answer: digital waveform patterns
Candidate Answer: digital Logic patterns
Question 170. Short circuited stubs are preferred to open circuited stubs because the latter are
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) More difficult to make
b) More difficult to connect
c) Liable to radiate
d) Incapable of giving a full range of reactance's
Correct Answer: Liable to radiate
Candidate Answer: Liable to radiate
Question 171. What function enable a user to input information ( in C language) while the programme is in execution
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Print f
b) scan f
c) &&
d) strcpy
Correct Answer: scan f
Candidate Answer: scan f
Question 172. which of the following is not performed by a microprocessor
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Controling the timing of a information flow
b) Performing the computing tasks specified in a program
c) Communicating with all peripherals using system bus
d) storing results in registers
Correct Answer: Controling the timing of a information flow

{BSNLCAFE}

Question 173. The length of IPv4 Address is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 32 Bytes
b) 4 Bytes
c) 8 bytes
d) 2 bits
Correct Answer: 4 Bytes

Question 174. The bridge which is used to measure values of resistance below 1 ohm is
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Wheatstone bridge
b) Kelvin's Bridge
c) Maxwell's bridge
d) Hay's bridge
Correct Answer: Kelvin's Bridge

Question 175. The power factor of an AC electric power system is defined as the ratio of
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) real power flowing to the load to the apparent power in the circuit
b) apparent power in the circuit to the real power flowing to the load
c) real power flowing to the load to the apparent Voltage in the circuit
d) None
Correct Answer: real power flowing to the load to the apparent power in the circuit

Question 176. A circuit with a resistor, inductor and capacitor in series is resonant of f0 Hz. If all the component values are now doubled the new resonant frequency
is
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 2f0
b) remains unchanged
c) f0/2
d) f0/4
Correct Answer: f0/2

Question 177. Transformer works on the principle of __
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Mutual induction
b) Self induction
c) Both
d) None
Correct Answer: Mutual induction

Question 178. _ layer is not present in the TCP/IP interface reference compared to OSI layers
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Transport
b) Session
c) Internet
d) Application
Correct Answer: Session

Question 179. Introduction of parity bit for error detection does not imply
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Increase in the lengths of the code
b) increase in the hardware of system
c) automatic error correction
d) all the above
Correct Answer: automatic error correction

Question 180. In continuous time _____ is used to obtain transfer function
( Correct Answer Mark : 1 Wrong Answer Mark (Negative Mark) : 0.25 )
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Options:
a) Laplace Transform
b) ZTransform
c) Both
d) None
Correct Answer: Laplace Transform

Question 181. Nyquist stability test is a graphical method and its advantages are
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Applicable to experimental results or frequency response of open loop system
b) closed loop stability can be predicted from openloop results
c) It indicates how to stabilize an unstable system
d) All the above
Correct Answer: All the above

Question 182. CT and PT are used generally to
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) Step up the respective quantities
b) step down the respective quantities
c) Both
d) None
Correct Answer: step down the respective quantities

Question 183. The RouthHurwitz criteria is comprised of separate tests that must be satisfied for a stable system
( Correct Answer Mark : 3 Wrong Answer Mark (Negative Mark) : 0.25 )
Options:
a) 1
b) 2
c) 3
d) 4
Correct Answer: 3

Question 184. Signal flow graph is used to obtain the
( Correct Answer Mark : 2 Wrong Answer Mark (Negative Mark) : 0.25)
Options:
a) stability of the system
b) Transfer function of the system
c) Controllability of the system
d) observability of the system
Correct Answer: Transfer function of the system

{BSNLCAFE}

Question 185. which of the following has highest priority
( Correct Answer Mark : 4 Wrong Answer Mark (Negative Mark) :0.25)
Options:
a) INTR
b) RST 6.5
c) RST 7.5
d) TRAP
Correct Answer: TRAP

{BSNLCAFE}

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