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Electric Traction - Interview Questions and Answers

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21. In main line service as compared to urban and suburban service
A. distance between the stops is more
B. maximum speed reached is high
C. acceleration and retardation rates are low
D. all of the above
Explanation:
22. Specific energy consumption becomes
A. more on steeper gradient
B. more with high train resistance
C. less if distance between stops is more
D. all of the above
Explanation:
23. For diesel locomotives the range of horsepower is
A. 50 to 200
B. 500 to 1000
C. 1500 to 2500
D. 3000 to 5000
Explanation:
24. Speed-time curve of main line service differs from those of urban and suburban services on following account
A. it has longer free running period
B. it has longer coasting period
C. accelerating and braking periods are comparatively smaller
D. all of the above
Explanation:
25. The friction at the track is proportional to
A. 1/speed
B. l/(speed)2
C. speed
D. none of the above
Explanation:
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