Electric Traction The resistance encountered by a train in motion is on account of 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 Friction at various parts of the rolling stock All of the listed here Friction at the track ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Vacuum is created by which of the following? Any of the listed here None of the listed here Vacuum pump Ejector Any of the listed here None of the listed here Vacuum pump Ejector ANSWER DOWNLOAD EXAMIANS APP
Electric Traction When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when Both of the listed here Wheel base of axles is more None of the listed here Degree of curvature is more Both of the listed here Wheel base of axles is more None of the listed here Degree of curvature is more 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 Combination of cascade and pole changing Rheostat control Pole changing Cascade control Combination of cascade and pole changing Rheostat control Pole changing ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following drives is suitable for mines where explosive gas exists? Battery locomotive Steam engine All of the listed here Diesel engine Battery locomotive Steam engine All of the listed here Diesel engine ANSWER DOWNLOAD EXAMIANS APP
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 Interference with communication lines Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation Short time power failure interrupts traffic for hours Interference with communication lines Corrosion problems in the underground pipe work High capital outlay in fixed installations beside route limitation ANSWER DOWNLOAD EXAMIANS APP
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