204. The normal value of adhesion friction is
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205. The pulsating torque exerted by steam locomotives causes which of the following?
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206. Which of the following braking systems is used on steam locomotives?
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207. Vacuum is created by which of the following?
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208. The resistance encountered by a train in motion is on account of
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209. Battery operated trucks are used in
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210. method can bring the locomotive to dead stop.
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