204. The normal value of adhesion friction is
A.0.12
B.0.25
C.0.4
D.0.75

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205. The pulsating torque exerted by steam locomotives causes which of the following?
A. Jolting and skidding
B. Hammer blow
C. Pitching
D. All of the above

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206. Which of the following braking systems is used on steam locomotives?
A. Hydraulic system
B. Pneumatic system
C. Vacuum system
D. None of the above

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207. Vacuum is created by which of the following?
A. Vacuum pump
B. Ejector
C. Any of the above
D. None of the above

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208. The resistance encountered by a train in motion is on account of
A. resistance offered by air
B. friction at the track
C. friction at various parts of the rolling stock
D. all of the above

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209. Battery operated trucks are used in
A. steel mills
B. power stations
C. narrow auge traction
D. factories for material transportation

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210.  method can bring the locomotive to dead stop.
A. Plugging braking
B. Rheostatic braking
C. Regenerative braking
D. None of the above

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