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Electric Traction

Electric Traction
Overload capacity of diesel engines is usually restricted to

4 percent
6 percent
8 percent
2 percent

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Electric Traction
If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails?

0.26
0.35
0.16
0.46

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Electric Traction
The friction at the track is proportional to

Speed
None of the listed here
1/(speed)²
1/speed

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Electric Traction
The coasting retardation is around

0.16 km phps
1.6 km phps
3.6 km phps
2.6 km phps

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Electric Traction
The specific energy consumption of a train depends on which of the following?

Gradient
Acceleration and retardation
All of the listed here
Distance covered

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Electric Traction
Specific energy consumption becomes

All of the listed here
More on steeper gradient
More with high train resistance
Less if distance between stops is more

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