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Exam Details

2016 Electrical Engineering Paper - II_2

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Questions 120
Duration 180 mins
Package Indian Economic Service and Indian Statistical Service Examination - Previous Year Papers

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Difficulty distribution

Easy 40 33.3%
Medium 40 33.3%
Hard 40 33.3%

Question type distribution

Multiple Choices 120 100%

Syllabus

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Sample questions from this paper

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1
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
Compared to the salient-pole Hydroelectric generators, the steam and the gas-turbine generators have cylindrical rotors for
A
Better air-circulation in the machine
B
Reducing the eddy-current losses in the rotor
C
Accommodating larger number of terms in the field winding
D
Providing higher mechanical strength against the centrifugal stress
2
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
Consider the following losses for short circuit test on a transformer : 1. Copper loss 2. Copper and iron losses 3. Eddy current and hysteresis losses 4. Friction and windage losses Which of the above is/are correct ?
A
1 only
B
2 only
C
3 only
D
2, 3 and 4
3
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
A 2000 V/200 V, 20 kVA, two winding, single phase transformer is reconnected as a step up auto-transformer having 200 V/2200 V ratings. Then the power rating for the auto transformer will be
A
160 kVA
B
180 kVA
C
200 kVA
D
220 kVA
4
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
The regulation of a transformer in which ohmic loss is 1% of the output and reactance drop is 5% of the voltage, when operating at 0·8 power factor lagging, is
A
3·8%
B
4·8%
C
5·2%
D
5·8%
5
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
In a power transformer, the core loss is 50 W at 40 Hz, and 100 W at 60 Hz, under the condition of same maximum flux density in both cases. The core loss at 50 Hz will be
A
64 W
B
73 W
C
82 W
D
91 W
6
2016 · Unclassified
2016 Electrical Engineering Paper - II_2
Consider the following advantages of a distributed winding in a rotating machine : 1. Better utilization of core as a number of evenly placed small slots are used 2. Improved waveform as harmonic emf's are reduced 3. Diminished armature reaction and efficient cooling Which of the above advantages are correct ?
A
1 and 2 only
B
1 and 3 only
C
2 and 3 only
D
1, 2 and 3