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Electric Traction

Electric Traction
The voltage used for suburban trains in D.C. system is usually

24 V
220 V
600 to 750 V
12 V

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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
The value of coefficient of adhesion will be high when rails are

Greased
Cleaned with sand
Wet
Sprayed with oil

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Electric Traction
Electric locomotives in India are manufactured at

Jamalpur
Gorakhpur
Chittaranjan
Bangalore

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Electric Traction
Specific energy consumption is least in _______ service.

Urban
Main line
None of the listed here
Suburban

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Electric Traction
In case of steam engines the steam pressure is

1 to 4 kgf/cm²
25 to 35 kgf/cm²
5 to 8 kgf/cm²
10 to 15 kgf/cm²

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