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Electric Traction

Electric Traction
In case of a steam engine an average coal consumption per km is nearly

28 to 30 kg
150 to 175 kg
60 to 80 kg
100 to 120 kg

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Electric Traction
When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when

Wheel base of axles is more
Both of the listed here
None of the listed here
Degree of curvature is more

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Electric Traction
The horsepower of steam locomotives is

2500 to 3000
500 to 1000
Up to 1500
1500 to 2000

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Electric Traction
Methods can bring the locomotive to dead stop.

None of the listed here
Plugging braking
Regenerative braking
Rheostat braking

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Electric Traction
Speed-time curve of main line service differs from those of urban and suburban services on following account

All of the listed here
Accelerating and braking periods are comparatively smaller
It has longer free running period
It has longer coasting period

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Electric Traction
Energy consumption in propelling the train is required for which of the following?

Work against the resistance to motion
Work against gravity while moving up the gradient
All of the listed here
Acceleration

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