Electric Traction Coefficient of adhesion reduces due to the presence of which of the following? Oil on the rails Dew on rails Sand on rails Both Dew on rails and Oil on the rails Oil on the rails Dew on rails Sand on rails Both Dew on rails and Oil on the rails ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Series motor is not suited for traction duty due to which of the following account? Current surges after temporary switching off supply Self relieving property Less current drain on the heavy load torque Commutating property at heavy load Current surges after temporary switching off supply Self relieving property Less current drain on the heavy load torque Commutating property at heavy load ANSWER DOWNLOAD EXAMIANS APP
Electric Traction _________ locomotive has the highest operational availability. Steam Electric Diesel All of the listed here Steam Electric Diesel All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The braking retardation is usually in the range 3 to 5 km phps 5 to 8 km phps 15 to 30 km phps 0.15 to 0.30 km phps 3 to 5 km phps 5 to 8 km phps 15 to 30 km phps 0.15 to 0.30 km phps ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Rheostat control Cascade control Pole changing Combination of cascade and pole changing Rheostat control Cascade control Pole changing Combination of cascade and pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The speed of a locomotive is controlled by Applying brakes Flywheel Gear box Regulating steam flow to engine Applying brakes Flywheel Gear box Regulating steam flow to engine ANSWER DOWNLOAD EXAMIANS APP
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