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Electric Traction

Electric Traction
_______ was the first city in India to adopt electric traction.

Calcutta (kolkata)
Bombay (Mumbai)
Madras (Chennai)
Delhi

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

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Electric Traction
The speed of a locomotive is controlled by

Gear box
Applying brakes
Regulating steam flow to engine
Flywheel

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Electric Traction
For given maximum axle load tractive efforts of AC. locomotive will be

More than that of D.C. locomotive
None of the listed here
Less than that of D.C. locomotive
Equal to that of D.C. locomotive

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Electric Traction
The braking retardation is usually in the range

5 to 8 km phps
3 to 5 km phps
0.15 to 0.30 km phps
15 to 30 km phps

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

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

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