Electric Traction Which of the following is the disadvantage of electric traction over other systems of traction? Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation Interference with communication lines Short time power failure interrupts traffic for hours Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation Interference with communication lines Short time power failure interrupts traffic for hours ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Series motor is not suited for traction duty due to which of the following account? 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 Current surges after temporary switching off supply ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The pulsating torque exerted by steam locomotives causes which of the following? Pitching Jolting and skidding All of the listed here Hammer blow Pitching Jolting and skidding All of the listed here Hammer blow ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Pole changing Cascade control Combination of cascade and pole changing Rheostat control Pole changing Cascade control Combination of cascade and pole changing Rheostat control ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Overhead lines for power supply to tram cars are at a minimum height of 10 m 3 m 15 m 6 m 10 m 3 m 15 m 6 m ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Specific energy consumption becomes All of the listed here Less if distance between stops is more More on steeper gradient More with high train resistance All of the listed here Less if distance between stops is more More on steeper gradient More with high train resistance ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS