Which of the following drives is suitable for mines where explosive gas exists?
A. Steam engine
B. Diesel engine
C. Battery locomotive
D. Any of the above
Answer: Option C
This Question Belongs to Electrical Engineering >> Electric Traction
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In case of ___________ free running and coasting periods are generally long.
A. Mainline service
B. Urban service
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D. All of the above
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B. Bangalore
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