TECHNICAL SECTION
2. The two-port parameter h21 is called
a) Open-circuit output admittance
b) Short-circuit input impedance
c) Open-circuit reverse voltage gain
d) Short-circuit forward current gain
ans. d
9.In a thermal power plant ash is collected in
a) mills
b) hoppers
c) bunkers
d) boilers
ans. b
10.The average life of neutrons after they decay is
a) 1 sec
b) 10 sec
c) 100 sec
d) 1000 sec
ans. d
11. The operating time of instantaneous relay is
a) 0.001 sec
b) 0.01 sec
c) 0.1 sec
d) 1 sec
ans. c
13. Stringing chart is useful for
a) the design of tower
b) the design of insulator string
c) finding the sag in the conductor
d) finding the distance between the towers
ans. c
14. The self GMD method is used to evalute
a) inductance
b) capacitance
c) inductance and capacitance
d) resistance
ans. a
18. Auto reclosing is used in case of
a) lighting arrester
b) bulk oil C.B.
c) air blast C.B
d) minimum oil C.B.
ans. c
20. A 50Hz , 4 pole turboalternator rated at 20 MVA , 13.2 KV has an inertia constant H= 4 KW sec/KVA . The K.E. is stored in the rotor at synchronous speed is
a) 80 KJ
b) 80 MJ
c) 40 MJ
d) 20 MJ
ans. b
23. A 36-slot, 4-pole , dc machine has a simplex lap winding with two conductors per slot. The back pitch and front pitch adopted could be respectively
a) 15,13
b) 19,17
c) 21, 19
d) 23, 21
ans. b
25. A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would be
a) 0.52
b) 0.24
c) 0.62
d) 0.36
ans. a
29. Two synchronous generators G1,G2 are operating in parallel and are equally sharing KVAR (lag) component of load. To shift par of KVAR from G2 to G1 , while keeping terminatl voltage fixed, the following action must be done
a) Raise If1 and lower If2
b) Lower If1 and Raise If2
c) Lower If1 or raise If2
d) Raise If1 or lower If2
ans. a
30 . A differential amplifier has a differential gain of 20,000 , CMRR: 80 dB . The common mode gain is given by
a) 1
b)1/2
c) 2
d) 250
ans. c
31. An amplifier has input power of 2 microwatts. The power gain of the amplifier is 60 dB. The output power will be
a) 2 milliwatts
b) 6 microwatts
c) 2 watts
d) 120 microwatts
ans. c
32. The voltage gains of the amplifier with the without feedback are 20 and 100 respectively. The percentage of negative feedback would be
a) 40%
b) 80 %
c) 4 %
d) 8 %
ans. c
34. A 3-stage ripple counter has Flipflop with propagation delay of 25 nsec and pulse width of strobe input 10 nsec . Then the maximum operating frequency at which counter operates reliably is
a) 16.67 MHz
b) 17.6 MHz
c) 12.67 MHz
d) 11.76 MHz
ans. d
35. The percent resolution of an 8-bit D/A converter is
a) 0.392
b) 1/256
c) 1/255
d) a and b both
ans. a
37. Which circuit is used as amplitude comparator?
a) Bistable
b) Monostable
c) Astable
d) Schmitt trigger
ans. d
38. The alternating voltage across and current through a circuit are represented by (a+jb) and (c+ jd) respectively. The power in watts is given by
a) ac-bd
b) bc+ad
c) ac+bd
d) bc-ad
ans. c
40. In a balanced star network the measured resistance between any two terminals is 6 Ohm . The resistance between any two terminals of the equivalent delta network is
a) 18 ohm
b) 6 ohm
c) 4.5 ohm
d) 9 ohm
ans. a
41. Kirchoff's current law is based on the law of
a) conservation of energy
b) conservation of charge
c) conversation of momentum
d) conversation of mass
ans. b
47. A transfer function has a second order denominator and constant gain in the numerator
a) the system has two zeros at the origin
b) the system has two finite zeros
c) the system has two zeros at infinity
d) the system has one zero at infinity
ans. c
48. A system is linear if and only if it satisfies
a) principle of superposition
b) principle of homogeneity
c) both a and b above
d) neither a and b above
ans. d
50. Load flow studies involve solving simultaneous
a) linear algebraic equations
b) non linear algebraic equations
c) linear differential equations
d) non linear differential equations
ans. b
51. A 12 bus power system has 3 voltage controlled buses. The dimensions of Jacobian matrix will be
a) 21x21
b) 21x19
c) 19x19
d) 19x21
ans. a
54. Bundled conductors are used for EHV transmission lines primarily for reducing the
a) Surge impedance of the line
b) I2R losses
c) voltage drop across the line
d) corona loss
ans. d
55. If all the sequence voltage at the fault point in a power system are equal, then the fault is
a) three phase fault
b) line to ground fault
c) line to line fault
d) double line to ground fault
ans. d
56. Severe over voltages are produced during arcing faults in a power system with the neutral
a) isolated
b) solidly earthed
c) earthed through a low resistance
d) earth through an inductive coil
ans. a
58. A 200V dc shunt motor is running at 1000 rpm and drawing a current of 10A. Its armature winding resistance is 2 Ohm. It is braked by plugging. The resistance to be connected is series with armature to restrict armature current to 10A, is
a) 32 Ohm
b) 36 Ohm
c) 38 Ohm
d) 40 Ohm
ans. b
59. A transformer has maximum efficiency at 3/4th full load. The ratio of its iron loss and full load copper loss, is
a) 4/3
b) 16/9
c) 9/16
d) 3/4
ans. c
63. The rotor impedance of a slip ring induction motor is (0.1 + j0.6) Ohm/ph. The resistance /ph to be inserted into rotor to get maximum torque at starting should be
a) 0.1 Ohm
b) 0.3 Ohm
c) 0.4 Ohm
d) 0.5 Ohm
ans. d
67. A 200V dc-dc converter is turned ON for 30 microsec and turned off for 10 microsec. The output voltage will be
a) 200 V
b) 150 V
c) 175 V
d) 120 V
ans. b
68. In single pulse modulation used in PWM inverters, for eliminating third harmonic component in the output voltage , the pulse width should be
a) 60'
b) 90'
c) 110'
d) 120'
ans. a
69. the dynamic resistance of a p-n junction germanium diode at room temperature with current of 1mA under forward biasing is
a) 100 Ohm
b) 13 mOhm
c) 13 Ohm
d) 26 Ohm
ans. d
70. Thermal runway is not possible in FET because as temperature of FET increases
a) mobility increases
b) mobility decreases
c) drain current decreases
d) transconductance increases
ans. b
APTITUDE SECTION
72. The sum of a three digit number and the number formed by reversing its digits is 989. The sum of its digits is 13. Find the middle digit.
a) 9
b) 6
c) 4
d) 2
c
73. ABC is a three digit number. The sum of digits is 9. If each of BA and BC are two digits numbers such that BA=BC-3. How many values C can take?
a) 16
b) 6
c) 26
d) 36
ans. c
74. A test consists of 50 questions. Each correct answer fetches 1 mark and for each wrong answer 1/2 mark is deducted. A candidate who wrote this test attempted all the questions and scored 41 marks. Find the number of questions he answered correctly?
a) 46
b) 42
c) 44
d) 48
ans. c
75. When the numerator of a fraction is increased by 7 and denominator is increased by13, the resulting number is equivalent to the obtained when the numerator is decreased by 2 and denominator is decreased by 11 . The sum of numerator and denominator is 24. Find the fraction
a) 1/23
b) 7/17
c) 11/13
d) 5/19
ans. b
76. Two straight lines can divide a circular disk into a maximum of four parts. Likewise, into how many maximum parts can four straight lines divide a circular disk ?
a) 11
b) 21
c) 31
d) 41
ans. a
78. Five persons namely Yasin, Arafat, Rasheed, Ali and Rehman are to be seated in five out of the six seats numbered from 1 to 6 . The following table provides information about the serial numbers of the seats on which each of the mentioned friends can possibly sit
Names Yasir Arafat Rasheed Ali Rehman
Seat no. 1 2 or 3 2,3,or 4 4 or 5 5 or 6
If one of the seats numbered 2 or 4 is unoccupied , then the number of different ways five mentioned persons can be seated is
a) 1
b) 2
c) 3
d) 4
ans. c
81. The length of the bridge , which a train 130 m long and travelling at 45 km/hr can cross in 30 sec is
a) 200 m
b) 225 m
c) 245 m
d) 250 m
ans. c
82. If PAPER is 11.20 , PENCIL is 9.83 , what will be the PEN?
a) 12.80
b) 11.60
c) 1.66
d) 13.8
ans. b
83. What is the sum of all the number less than 100 that can be written as the sum of 9 consecutive positive integers?
a) 612
b) 630
c) 702
d) 504
ans. a
84. Identify the odd one
a) heart
b) liver
c) nose
d) kidneys
ans. c
85. 18,10, 6, 4,3,?
a) 8
b) 4
c) 3.5
d) 2.5
ans. d
86. Which makes the best comparison ?
TOMATO: MTOOTA:: 123412: ?
a) 312214
b) 123456
c) 321124
d) 213314
ans. a
87. My brother is standing 40 m south-west of my sister. I am standing 40 m south-east of my brother. I am in which direction of my sister?
a) south
b) west
c) east
d) north-east
ans. a
88. Find the next letters in series : BCZ, DEY, FGX, HIW, _____
a) JKL
b) JKV
c) JKU
d) JKT
ans. b
89. Find related word
Conscience : Wrong:: Police: _______
a) thief
b) law
c) discipline
d) crime
ans. d
91. A boatman goes 2km against the current of the stream on 1 hour and goes 1km along the current in 10 minutes . How long will it take to go 5 km in stationary water?
a) 40 minutes
b) 1 hour
c) 1 hr 15 min
d) 1 hr 30 min
ans. c
92. In how many ways can the letters of the word LEADER can be arranged?
a) 72
b) 144
c) 360
d) 720
ans.d
93. One pipe can fill a tank three as fast as another pipe. If together, the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in
a) 81 min
b) 144 min
c) 108 min
d) 192 min
ans. b
94. If log27= 1.431, then the value of log 9 is
a) 0.934
b) 0.954
c) 0.945
d) 0.958
ans. b
97. X introduces Y saying," He is the husband of the grand daughter of the father of my father". How is Y realted to X?
a) brother
b) uncle
c) co-brother
d) brother-in-law
ans.d
98. Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start?
a) 11
b) 15
c) 13
d) 9
ans. b
99. In a certain code, 'bi nie pie' means "some good jokes", 'nie bat lik' means "some real stories, 'pie lik tol' means " many good stories" . Which word in the code means 'jokes'?
a) nie
b) pie
c) lik
d) bi
ans. d
100. There are five bus stops A,B,C,D,E at equal intervals. C is not the middle stop. A and E are not terminals stops. C comes twice as many stops before D in upward journey as B comes after A. D is the first stop in downward journey. The correct sequence of stops in downward journey is
a) ABCDE
b) CDAEB
c) DACEB
d) DEBAC
ans. d
2. The two-port parameter h21 is called
a) Open-circuit output admittance
b) Short-circuit input impedance
c) Open-circuit reverse voltage gain
d) Short-circuit forward current gain
ans. d
9.In a thermal power plant ash is collected in
a) mills
b) hoppers
c) bunkers
d) boilers
ans. b
10.The average life of neutrons after they decay is
a) 1 sec
b) 10 sec
c) 100 sec
d) 1000 sec
ans. d
11. The operating time of instantaneous relay is
a) 0.001 sec
b) 0.01 sec
c) 0.1 sec
d) 1 sec
ans. c
13. Stringing chart is useful for
a) the design of tower
b) the design of insulator string
c) finding the sag in the conductor
d) finding the distance between the towers
ans. c
14. The self GMD method is used to evalute
a) inductance
b) capacitance
c) inductance and capacitance
d) resistance
ans. a
18. Auto reclosing is used in case of
a) lighting arrester
b) bulk oil C.B.
c) air blast C.B
d) minimum oil C.B.
ans. c
20. A 50Hz , 4 pole turboalternator rated at 20 MVA , 13.2 KV has an inertia constant H= 4 KW sec/KVA . The K.E. is stored in the rotor at synchronous speed is
a) 80 KJ
b) 80 MJ
c) 40 MJ
d) 20 MJ
ans. b
23. A 36-slot, 4-pole , dc machine has a simplex lap winding with two conductors per slot. The back pitch and front pitch adopted could be respectively
a) 15,13
b) 19,17
c) 21, 19
d) 23, 21
ans. b
25. A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would be
a) 0.52
b) 0.24
c) 0.62
d) 0.36
ans. a
29. Two synchronous generators G1,G2 are operating in parallel and are equally sharing KVAR (lag) component of load. To shift par of KVAR from G2 to G1 , while keeping terminatl voltage fixed, the following action must be done
a) Raise If1 and lower If2
b) Lower If1 and Raise If2
c) Lower If1 or raise If2
d) Raise If1 or lower If2
ans. a
30 . A differential amplifier has a differential gain of 20,000 , CMRR: 80 dB . The common mode gain is given by
a) 1
b)1/2
c) 2
d) 250
ans. c
31. An amplifier has input power of 2 microwatts. The power gain of the amplifier is 60 dB. The output power will be
a) 2 milliwatts
b) 6 microwatts
c) 2 watts
d) 120 microwatts
ans. c
32. The voltage gains of the amplifier with the without feedback are 20 and 100 respectively. The percentage of negative feedback would be
a) 40%
b) 80 %
c) 4 %
d) 8 %
ans. c
34. A 3-stage ripple counter has Flipflop with propagation delay of 25 nsec and pulse width of strobe input 10 nsec . Then the maximum operating frequency at which counter operates reliably is
a) 16.67 MHz
b) 17.6 MHz
c) 12.67 MHz
d) 11.76 MHz
ans. d
35. The percent resolution of an 8-bit D/A converter is
a) 0.392
b) 1/256
c) 1/255
d) a and b both
ans. a
37. Which circuit is used as amplitude comparator?
a) Bistable
b) Monostable
c) Astable
d) Schmitt trigger
ans. d
38. The alternating voltage across and current through a circuit are represented by (a+jb) and (c+ jd) respectively. The power in watts is given by
a) ac-bd
b) bc+ad
c) ac+bd
d) bc-ad
ans. c
40. In a balanced star network the measured resistance between any two terminals is 6 Ohm . The resistance between any two terminals of the equivalent delta network is
a) 18 ohm
b) 6 ohm
c) 4.5 ohm
d) 9 ohm
ans. a
41. Kirchoff's current law is based on the law of
a) conservation of energy
b) conservation of charge
c) conversation of momentum
d) conversation of mass
ans. b
47. A transfer function has a second order denominator and constant gain in the numerator
a) the system has two zeros at the origin
b) the system has two finite zeros
c) the system has two zeros at infinity
d) the system has one zero at infinity
ans. c
48. A system is linear if and only if it satisfies
a) principle of superposition
b) principle of homogeneity
c) both a and b above
d) neither a and b above
ans. d
50. Load flow studies involve solving simultaneous
a) linear algebraic equations
b) non linear algebraic equations
c) linear differential equations
d) non linear differential equations
ans. b
51. A 12 bus power system has 3 voltage controlled buses. The dimensions of Jacobian matrix will be
a) 21x21
b) 21x19
c) 19x19
d) 19x21
ans. a
54. Bundled conductors are used for EHV transmission lines primarily for reducing the
a) Surge impedance of the line
b) I2R losses
c) voltage drop across the line
d) corona loss
ans. d
55. If all the sequence voltage at the fault point in a power system are equal, then the fault is
a) three phase fault
b) line to ground fault
c) line to line fault
d) double line to ground fault
ans. d
56. Severe over voltages are produced during arcing faults in a power system with the neutral
a) isolated
b) solidly earthed
c) earthed through a low resistance
d) earth through an inductive coil
ans. a
58. A 200V dc shunt motor is running at 1000 rpm and drawing a current of 10A. Its armature winding resistance is 2 Ohm. It is braked by plugging. The resistance to be connected is series with armature to restrict armature current to 10A, is
a) 32 Ohm
b) 36 Ohm
c) 38 Ohm
d) 40 Ohm
ans. b
59. A transformer has maximum efficiency at 3/4th full load. The ratio of its iron loss and full load copper loss, is
a) 4/3
b) 16/9
c) 9/16
d) 3/4
ans. c
63. The rotor impedance of a slip ring induction motor is (0.1 + j0.6) Ohm/ph. The resistance /ph to be inserted into rotor to get maximum torque at starting should be
a) 0.1 Ohm
b) 0.3 Ohm
c) 0.4 Ohm
d) 0.5 Ohm
ans. d
67. A 200V dc-dc converter is turned ON for 30 microsec and turned off for 10 microsec. The output voltage will be
a) 200 V
b) 150 V
c) 175 V
d) 120 V
ans. b
68. In single pulse modulation used in PWM inverters, for eliminating third harmonic component in the output voltage , the pulse width should be
a) 60'
b) 90'
c) 110'
d) 120'
ans. a
69. the dynamic resistance of a p-n junction germanium diode at room temperature with current of 1mA under forward biasing is
a) 100 Ohm
b) 13 mOhm
c) 13 Ohm
d) 26 Ohm
ans. d
70. Thermal runway is not possible in FET because as temperature of FET increases
a) mobility increases
b) mobility decreases
c) drain current decreases
d) transconductance increases
ans. b
APTITUDE SECTION
72. The sum of a three digit number and the number formed by reversing its digits is 989. The sum of its digits is 13. Find the middle digit.
a) 9
b) 6
c) 4
d) 2
c
73. ABC is a three digit number. The sum of digits is 9. If each of BA and BC are two digits numbers such that BA=BC-3. How many values C can take?
a) 16
b) 6
c) 26
d) 36
ans. c
74. A test consists of 50 questions. Each correct answer fetches 1 mark and for each wrong answer 1/2 mark is deducted. A candidate who wrote this test attempted all the questions and scored 41 marks. Find the number of questions he answered correctly?
a) 46
b) 42
c) 44
d) 48
ans. c
75. When the numerator of a fraction is increased by 7 and denominator is increased by13, the resulting number is equivalent to the obtained when the numerator is decreased by 2 and denominator is decreased by 11 . The sum of numerator and denominator is 24. Find the fraction
a) 1/23
b) 7/17
c) 11/13
d) 5/19
ans. b
76. Two straight lines can divide a circular disk into a maximum of four parts. Likewise, into how many maximum parts can four straight lines divide a circular disk ?
a) 11
b) 21
c) 31
d) 41
ans. a
78. Five persons namely Yasin, Arafat, Rasheed, Ali and Rehman are to be seated in five out of the six seats numbered from 1 to 6 . The following table provides information about the serial numbers of the seats on which each of the mentioned friends can possibly sit
Names Yasir Arafat Rasheed Ali Rehman
Seat no. 1 2 or 3 2,3,or 4 4 or 5 5 or 6
If one of the seats numbered 2 or 4 is unoccupied , then the number of different ways five mentioned persons can be seated is
a) 1
b) 2
c) 3
d) 4
ans. c
81. The length of the bridge , which a train 130 m long and travelling at 45 km/hr can cross in 30 sec is
a) 200 m
b) 225 m
c) 245 m
d) 250 m
ans. c
82. If PAPER is 11.20 , PENCIL is 9.83 , what will be the PEN?
a) 12.80
b) 11.60
c) 1.66
d) 13.8
ans. b
83. What is the sum of all the number less than 100 that can be written as the sum of 9 consecutive positive integers?
a) 612
b) 630
c) 702
d) 504
ans. a
84. Identify the odd one
a) heart
b) liver
c) nose
d) kidneys
ans. c
85. 18,10, 6, 4,3,?
a) 8
b) 4
c) 3.5
d) 2.5
ans. d
86. Which makes the best comparison ?
TOMATO: MTOOTA:: 123412: ?
a) 312214
b) 123456
c) 321124
d) 213314
ans. a
87. My brother is standing 40 m south-west of my sister. I am standing 40 m south-east of my brother. I am in which direction of my sister?
a) south
b) west
c) east
d) north-east
ans. a
88. Find the next letters in series : BCZ, DEY, FGX, HIW, _____
a) JKL
b) JKV
c) JKU
d) JKT
ans. b
89. Find related word
Conscience : Wrong:: Police: _______
a) thief
b) law
c) discipline
d) crime
ans. d
91. A boatman goes 2km against the current of the stream on 1 hour and goes 1km along the current in 10 minutes . How long will it take to go 5 km in stationary water?
a) 40 minutes
b) 1 hour
c) 1 hr 15 min
d) 1 hr 30 min
ans. c
92. In how many ways can the letters of the word LEADER can be arranged?
a) 72
b) 144
c) 360
d) 720
ans.d
93. One pipe can fill a tank three as fast as another pipe. If together, the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in
a) 81 min
b) 144 min
c) 108 min
d) 192 min
ans. b
94. If log27= 1.431, then the value of log 9 is
a) 0.934
b) 0.954
c) 0.945
d) 0.958
ans. b
97. X introduces Y saying," He is the husband of the grand daughter of the father of my father". How is Y realted to X?
a) brother
b) uncle
c) co-brother
d) brother-in-law
ans.d
98. Ravi is 7 ranks ahead of Sumit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start?
a) 11
b) 15
c) 13
d) 9
ans. b
99. In a certain code, 'bi nie pie' means "some good jokes", 'nie bat lik' means "some real stories, 'pie lik tol' means " many good stories" . Which word in the code means 'jokes'?
a) nie
b) pie
c) lik
d) bi
ans. d
100. There are five bus stops A,B,C,D,E at equal intervals. C is not the middle stop. A and E are not terminals stops. C comes twice as many stops before D in upward journey as B comes after A. D is the first stop in downward journey. The correct sequence of stops in downward journey is
a) ABCDE
b) CDAEB
c) DACEB
d) DEBAC
ans. d
