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Electric Traction

Electric Traction
The overall efficiency of steam locomotive is around

35 to 45 percent
25 to 35 percent
15 to 20 percent
5 to 10 percent

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Electric Traction
Which of the following is an advantage of electric traction over other methods of traction?

All of the listed here
Faster acceleration
Better braking action
No pollution problems

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Electric Traction
Which of the following drives is suitable for mines where explosive gas exists?

All of the listed here
Diesel engine
Steam engine
Battery locomotive

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Electric Traction
Long distance railways use which of the following?

25 kV two phase A.C.
25 kV three phase A.C.
25 kV single phase A.C.
200 V D.C.

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Electric Traction
Overload capacity of diesel engines is usually restricted to

6 percent
2 percent
4 percent
8 percent

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Electric Traction
In main line service as compared to urban and suburban service

Distance between the stops is more
Acceleration and retardation rates are low
Maximum speed reached is high
All of the listed here

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