Electric Traction
Battery operated trucks are used in

Narrow gauge traction
Power stations
Factories for material transportation
Steel mills

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Electric Traction
Coefficient of adhesion is

Low in case of D.C. traction than in the case of AC. traction
High in case of D.C. traction than in the case of AC. traction
Equal in both AC. and D.C. traction
All of the listed here

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