In case of _________________ free running and coasting periods are generally long ?
Correct answer: A. main-line service
- A. main-line service
- B. urban service
- C. sub-urban service
- D. all of the above
Explanation
Main-line trains run between widely spaced stations, so they spend relatively long periods running freely or coasting after acceleration. Urban and suburban trains stop more frequently and have shorter coasting intervals.
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