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Electric Traction

Electric Traction
Which of the following is the voltage for single phase A.C. system?

220 V
11 kV
5 kV
220 v

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Electric Traction
In a steam locomotive electric power is provided through

Diesel engine generator
Overhead wire
Battery system
Small turbo-generator

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Electric Traction
Which of the following braking systems on the locomotives is costly?

All braking systems are equally costly
Vacuum braking on steam locomotives
Vacuum braking on diesel locomotives
Regenerative braking on electric locomotives

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

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

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Electric Traction
In India, electrification of railway track was done for the first time in which of the following years?

1925 - 1932
1920-1925
1935 - 1938
1940-1942

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Electric Traction
In tram ways which of the following motors is used?

D.C. series motor
D.C. shunt motor
A.C. three phase motor
AC. single phase capacitor start motor

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