TECHNICAL QUESTIONS
2. The typical ratio of latching current to holding current in a 20 A thyristor is
a) 5.0
b) 2.0
c) 1.0
d) 0.5
ans. 2
4. The sequence components of the fault current are as follows I+ =j1.5 pu, I- = -j0.5 pu, Izero= -j 1 pu. The type of fault in the system is
a) LG
b) LL
c) LLG
d) LLLG
ans. c
14. The slip of an induction motor normally does not depend on
a) rotor speed
b) synchronous speed
c) shaft torque
d) core-loss component
ans. d
19. The bridge method commonly used for finding the mutual inductance is
a) Heaviside Campbell bridge
b) Schering bridge
c) De Sauty bridge
d) Wien bridge
ans. a
27. The locked rotor current in a 3-phase , star connected 15kw , 4-pole , 230V , 50Hz induction motor at rated conditions is 50 A. Neglecting losses and magnetizing current, the approximate locked rotor line current drawn when the motor is connected to a 236 V , 57 Hz supply is
a) 58.5 A
b) 45.0 A
c) 42.7 A
d) 55.6 A
ans. b
28. An analog voltmeter uses external multiplier settings. With a multiplier setting of 20 Kohm , it reads 440V and with a multiplier setting of 80 Kohm, it reads 352 V . For a multiplier setting of 40 Kohm , the voltmeter reads
a) 371 V
b) 383 V
c) 394 V
d) 406 V
ans. d
36. A fair coin is tossed till a head appears for the first time. The probability that the number of required tosses is odd, is
a) 1/3
b) 1/2
c) 2/3
d) 3/4
ans. c
39. A cylindrical rotor generator delivers 0.5 pu power in the steady-state to an infinite bus through a transmission line of reactance 0.5 pu. The generator no-load voltage is 1.5 pu and the infinite bus voltage is 1 pu. The inertia constant of the generator is 5 MW-s/MVA and the generator reactance is 1 pu.The critical clearing angle, in degrees, for a three-phase dead short circuit fault at the generator terminal is
a) 53.3
b) 60.2
c) 70.8
d) 79.6
ans. d
GENERAL APTITUDE
56. Choose the most appropriate word from the options given below to complete the following sentence:
Given the seriousness of the situation that he had to face , his_____ was impressive.
a) beggary
b) nomenclature
c) jealously
d) nonchalance
ans. d
58. Which one of the following options is the closet in meaning to word given below?
Latitude
a) Eligibilty
b) Freedom
c) coersion
d) Meticulouness
ans. b
59. fiill in the blank with appropriate alternative from the options
If the tired soldier wanted to lie down, he_____ the matress out on the balcony.
a) should take
b) shall take
c) should have taken
d) will have taken
ans. a
60. find out error in sentence
I requested that he should be given the driving test today instead of tomorrow.
a) requested that
b) should be given
c) the driving test
d) instead of tomorrow
ans. b
61. There are eight bags of rice looking alike , seven of which have equal weight and one is slightly heavier. The weighing balance is of unlimited capacity. Using this balance , the minimum number of weighings required to identify the heavier bag is
a) 2
b) 3
c) 4
d) 8
ans. a
62. One of the legacies of the Roman legions was discipline. In the legions, military law prevailed and discipline was brutal. Discipline on the battlefield kept units obedient , intact and fighting, even when the odds and conditions were against them.
which one of the following statements best sums up the meaning of the above passage?
a) Through regimentation was the main reason for the efficiency of the Roman legions even in adverse circumstances.
b) The legions were treated inhumanly as if the men were animals.
c) Discipline was the armies' inheritance from their seniors.
d) The harsh discipline to which the legions were subjected to led to the odds and conditions being against them.
ans. a
64. Raju has 14 currency notes in his pocket consisting of only Rs 20 notes and Rs. 10 notes. The total money value of the notes is Rs 230 . The number of Rs. 10 notes that Raju has is
a) 5
b) 6
c) 9
d) 10
ans. a
65. A and B are friends. They decide to meet between 1 pm and 2 pm on a given day. There is a condition that whoever arrives first will not wait for the other for more than 15 minutes . The probability that they will meet on that day is
a) 1/4
b) 1/6
c) 7/16
d) 9/16
ans. c
2. The typical ratio of latching current to holding current in a 20 A thyristor is
a) 5.0
b) 2.0
c) 1.0
d) 0.5
ans. 2
4. The sequence components of the fault current are as follows I+ =j1.5 pu, I- = -j0.5 pu, Izero= -j 1 pu. The type of fault in the system is
a) LG
b) LL
c) LLG
d) LLLG
ans. c
14. The slip of an induction motor normally does not depend on
a) rotor speed
b) synchronous speed
c) shaft torque
d) core-loss component
ans. d
19. The bridge method commonly used for finding the mutual inductance is
a) Heaviside Campbell bridge
b) Schering bridge
c) De Sauty bridge
d) Wien bridge
ans. a
27. The locked rotor current in a 3-phase , star connected 15kw , 4-pole , 230V , 50Hz induction motor at rated conditions is 50 A. Neglecting losses and magnetizing current, the approximate locked rotor line current drawn when the motor is connected to a 236 V , 57 Hz supply is
a) 58.5 A
b) 45.0 A
c) 42.7 A
d) 55.6 A
ans. b
28. An analog voltmeter uses external multiplier settings. With a multiplier setting of 20 Kohm , it reads 440V and with a multiplier setting of 80 Kohm, it reads 352 V . For a multiplier setting of 40 Kohm , the voltmeter reads
a) 371 V
b) 383 V
c) 394 V
d) 406 V
ans. d
36. A fair coin is tossed till a head appears for the first time. The probability that the number of required tosses is odd, is
a) 1/3
b) 1/2
c) 2/3
d) 3/4
ans. c
39. A cylindrical rotor generator delivers 0.5 pu power in the steady-state to an infinite bus through a transmission line of reactance 0.5 pu. The generator no-load voltage is 1.5 pu and the infinite bus voltage is 1 pu. The inertia constant of the generator is 5 MW-s/MVA and the generator reactance is 1 pu.The critical clearing angle, in degrees, for a three-phase dead short circuit fault at the generator terminal is
a) 53.3
b) 60.2
c) 70.8
d) 79.6
ans. d
GENERAL APTITUDE
56. Choose the most appropriate word from the options given below to complete the following sentence:
Given the seriousness of the situation that he had to face , his_____ was impressive.
a) beggary
b) nomenclature
c) jealously
d) nonchalance
ans. d
58. Which one of the following options is the closet in meaning to word given below?
Latitude
a) Eligibilty
b) Freedom
c) coersion
d) Meticulouness
ans. b
59. fiill in the blank with appropriate alternative from the options
If the tired soldier wanted to lie down, he_____ the matress out on the balcony.
a) should take
b) shall take
c) should have taken
d) will have taken
ans. a
60. find out error in sentence
I requested that he should be given the driving test today instead of tomorrow.
a) requested that
b) should be given
c) the driving test
d) instead of tomorrow
ans. b
61. There are eight bags of rice looking alike , seven of which have equal weight and one is slightly heavier. The weighing balance is of unlimited capacity. Using this balance , the minimum number of weighings required to identify the heavier bag is
a) 2
b) 3
c) 4
d) 8
ans. a
62. One of the legacies of the Roman legions was discipline. In the legions, military law prevailed and discipline was brutal. Discipline on the battlefield kept units obedient , intact and fighting, even when the odds and conditions were against them.
which one of the following statements best sums up the meaning of the above passage?
a) Through regimentation was the main reason for the efficiency of the Roman legions even in adverse circumstances.
b) The legions were treated inhumanly as if the men were animals.
c) Discipline was the armies' inheritance from their seniors.
d) The harsh discipline to which the legions were subjected to led to the odds and conditions being against them.
ans. a
64. Raju has 14 currency notes in his pocket consisting of only Rs 20 notes and Rs. 10 notes. The total money value of the notes is Rs 230 . The number of Rs. 10 notes that Raju has is
a) 5
b) 6
c) 9
d) 10
ans. a
65. A and B are friends. They decide to meet between 1 pm and 2 pm on a given day. There is a condition that whoever arrives first will not wait for the other for more than 15 minutes . The probability that they will meet on that day is
a) 1/4
b) 1/6
c) 7/16
d) 9/16
ans. c
