Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? 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 Reduced current method ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Locomotives with monometer bogies have Uneven distribution of tractive effect Lot of skidding Low coefficient of adhesion Suitability for passenger as well as freight service Uneven distribution of tractive effect Lot of skidding Low coefficient of adhesion Suitability for passenger as well as freight service ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For 25 kV single phase system power supply frequency is 100 Hz 60 Hz 50 Hz 25 Hz 100 Hz 60 Hz 50 Hz 25 Hz ANSWER DOWNLOAD EXAMIANS APP
Electric Traction _________ frequency is not common in low frequency traction system 40 Hz None of the listed here 25 Hz 16 Hz 40 Hz None of the listed here 25 Hz 16 Hz ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is the advantage of electric braking? Motor continues to remain loaded during braking More heat is generated during braking It is instantaneous It avoids wear of track Motor continues to remain loaded during braking More heat is generated during braking It is instantaneous It avoids wear of track ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The normal value of adhesion friction is 0.50 0.30 0.35 0.25 0.50 0.30 0.35 0.25 ANSWER DOWNLOAD EXAMIANS APP
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