Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? Reduced current method Series parallel operation of motors Tap changing control of transformer All of the listed here Reduced current method Series parallel operation of motors Tap changing control of transformer All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The wheels of a train, engine as well as bogies, are slightly tapered to Facilitate braking Increase friction Facilitate in taking turns Reduce friction Facilitate braking Increase friction Facilitate in taking turns Reduce friction ANSWER DOWNLOAD EXAMIANS APP
Electric Traction _________ frequency is not common in low frequency traction system 40 Hz 16 Hz None of the listed here 25 Hz 40 Hz 16 Hz None of the listed here 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is an advantage of electric traction over other methods of traction? Faster acceleration No pollution problems All of the listed here Better braking action Faster acceleration No pollution problems All of the listed here Better braking action ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Specific energy consumption becomes More on steeper gradient All of the listed here More with high train resistance Less if distance between stops is more More on steeper gradient All of the listed here More with high train resistance Less if distance between stops is more ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The rate of acceleration on suburban or urban service is in the range 0.2 to 0.5 km phps 5 to 10 km phps 1.6 to 4.0 km phps 15 to 25 km phps 0.2 to 0.5 km phps 5 to 10 km phps 1.6 to 4.0 km phps 15 to 25 km phps ANSWER DOWNLOAD EXAMIANS APP
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