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Free download in PDF Electric Traction Multiple Choice Questions with Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
61
The coasting retardation is around
[A]
0.16 km phps
[B]
1.6 km phps
[C]
16 km phps
[D]
40 km phps
62
The rate of acceleration on suburban orurban service is in the range
[A]
0.2 to 0.5 km phps
[B]
1.6 to 4.0 km phps
[C]
5 to 10 km phps
[D]
15 to 25 km phps
Answer: 1.6 to 4.0 km phps
63
The braking retardation is usually in the range
[A]
0.15 to 0.30 km phps
[B]
0.30 to 0.6 km phps
[C]
0.6 to 2.4 km phps
[D]
3 to 5 km phps
64
watt-hours per tonne km is usually the specific energy consumption for suburban services.
[A]
15—20
[B]
50—75
[C]
120—150
[D]
160—200
65
If the co-efficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails ?
[A]
0.3
[B]
0.26
[C]
0.225
[D]
0.16
66
Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction ?
[A]
Reduced current method
[B]
Tap changing control of transformer
[C]
Series parallel operation of motors
[D]
All of the above
Answer: Tap changing control of transformer
67
For which of the following locomotives the maintenance requirements are the least?
[A]
Steam locomotives
[B]
Diesel locomotives
[C]
Electric locomotives
[D]
Equal in all of the above
Answer: Diesel locomotives
68
Which of the following happens in Kando system ?
[A]
Three phase A.C. is converted into D.C.
[B]
Single phase A.C. is converted into D.C.
[C]
Single phase supply is converted into three phase system
[D]
None of the above
Answer: Single phase supply is converted into three phase system
69
In case of a steam engine an average coal consumption per km is nearly
[A]
150 to 175 kg
[B]
100 to 120 kg
[C]
60 to 80 kg
[D]
28 to 30 kg
70
Suri transmission is
[A]
electrical-pneumatic
[B]
mechanical-electrical
[C]
hydro-mechanical
[D]
hydro-pneumatic
71
In India, electrification of railway track was done for the first time in which of the following years ?
[A]
1820—1825
[B]
1880—1885
[C]
1925—1932
[D]
1947—1954
72
Power for lighting in passanger coach, in a long distance electric train, is provided
[A]
directly through overhead electric line
[B]
through individual generator of bogie and batteries
[C]
through rails
[D]
through locomotive
Answer: through individual generator of bogie and batteries
73
For 25 kV single phase system power supply frequency is
[A]
60 Hz
[B]
50 Hz
[C]
25 Hz
[D]
16 Hz
74
_______ frequency is not common in low frequency traction system
[A]
40 Hz
[B]
25 Hz
[C]
16 Hz
[D]
None
75
_______ was the first city in India to adopt electric traction.
[A]
Delhi
[B]
Madras
[C]
Calcutta
[D]
Bombay
76
Locomotives with monometer bogies have
[A]
uneven distribution of tractive effect
[B]
suitability for passanger as well as freight service
[C]
lot of skidding
[D]
low co-efficient of adhesion
Answer: suitability for passanger as well as freight service
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