Electric Traction The air resistance to the movement of the train is proportional to (speed)3 (speed)2 1/speed speed (speed)3 (speed)2 1/speed speed ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The specific energy consumption of a train depends on which of the following? Acceleration and retardation Distance covered All of the listed here Gradient Acceleration and retardation Distance covered All of the listed here Gradient ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The resistance encountered by a train in motion is on account of Friction at various parts of the rolling stock All of the listed here Friction at the track Resistance offered by air Friction at various parts of the rolling stock All of the listed here Friction at the track Resistance offered by air ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is an advantage of electric traction over other methods of traction? No pollution problems Faster acceleration Better braking action All of the listed here No pollution problems Faster acceleration Better braking action All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is the disadvantage of electric traction over other systems of traction? High capital outlay in fixed installations beside route limitation Corrosion problems in the underground pipe work Interference with communication lines Short time power failure interrupts traffic for hours High capital outlay in fixed installations beside route limitation Corrosion problems in the underground pipe work Interference with communication lines Short time power failure interrupts traffic for hours ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Cascade control Rheostat control Pole changing Combination of cascade and pole changing Cascade control Rheostat control Pole changing Combination of cascade and pole changing ANSWER DOWNLOAD EXAMIANS APP
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