Electric Traction Energy consumption in propelling the train is required for which of the following? Work against the resistance to motion Work against gravity while moving up the gradient Acceleration All of the listed here Work against the resistance to motion Work against gravity while moving up the gradient Acceleration All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Coefficient of adhesion reduces due to the presence of which of the following? Oil on the rails Both Dew on rails and Oil on the rails Sand on rails Dew on rails Oil on the rails Both Dew on rails and Oil on the rails Sand on rails Dew on rails ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Overhead lines for power supply to tram cars are at a minimum height of 15 m 10 m 3 m 6 m 15 m 10 m 3 m 6 m ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The efficiency of diesel locomotives is nearly 30 to 40 percent 45 to 55 percent 20 to 25 percent 60 to 70 percent 30 to 40 percent 45 to 55 percent 20 to 25 percent 60 to 70 percent ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Combination of cascade and pole changing Rheostat control Cascade control Pole changing Combination of cascade and pole changing Rheostat control Cascade control Pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The voltage used for suburban trains in D.C. system is usually 12 V 600 to 750 V 220 V 24 V 12 V 600 to 750 V 220 V 24 V ANSWER DOWNLOAD EXAMIANS APP
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