Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? Reduced current method All of the listed here Tap changing control of transformer Series parallel operation of motors Reduced current method All of the listed here Tap changing control of transformer Series parallel operation of motors ANSWER DOWNLOAD EXAMIANS APP
Electric Traction When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when None of the listed here Both of the listed here Wheel base of axles is more Degree of curvature is more None of the listed here Both of the listed here Wheel base of axles is more Degree of curvature is more 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 Friction at the track All of the listed here Resistance offered by air Friction at various parts of the rolling stock Friction at the track All of the listed here Resistance offered by air ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Vacuum is created by which of the following? Ejector Vacuum pump Any of the listed here None of the listed here Ejector Vacuum pump Any of the listed here None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Quadrilateral speed-time curve pertains to which of the following services? Main line service Urban service Urban and suburban service Suburban service Main line service Urban service Urban and suburban service Suburban service 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 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 ANSWER DOWNLOAD EXAMIANS APP
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