Electric Traction Which of the following is the disadvantage of electric traction over other systems of traction? Short time power failure interrupts traffic for hours Corrosion problems in the underground pipe work Interference with communication lines High capital outlay in fixed installations beside route limitation Short time power failure interrupts traffic for hours Corrosion problems in the underground pipe work Interference with communication lines High capital outlay in fixed installations beside route limitation ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is the advantage of electric braking? It is instantaneous More heat is generated during braking Motor continues to remain loaded during braking It avoids wear of track It is instantaneous More heat is generated during braking Motor continues to remain loaded during braking It avoids wear of track ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Watt-hours per tonne km is usually the specific energy consumption for suburban services. 50 - 75 150-200 100-150 120-150 50 - 75 150-200 100-150 120-150 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 For three-phase induction motors which of the following is the least efficient method of speed control? Pole changing Cascade control Rheostat control Combination of cascade and pole changing Pole changing Cascade control Rheostat control Combination of cascade and pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction If the coefficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails? 0.16 0.46 0.26 0.35 0.16 0.46 0.26 0.35 ANSWER DOWNLOAD EXAMIANS APP
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