Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? All of the listed here Series parallel operation of motors Reduced current method Tap changing control of transformer All of the listed here Series parallel operation of motors Reduced current method Tap changing control of transformer ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Coefficient of adhesion reduces due to the presence of which of the following? Both Dew on rails and Oil on the rails Sand on rails Oil on the rails Dew on rails Both Dew on rails and Oil on the rails Sand on rails Oil on the rails Dew on rails ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The rate of acceleration on sub-urban or urban services is restricted by the consideration of Track curves Engine power Track size Passenger Discomfort Track curves Engine power Track size Passenger Discomfort ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In main line service as compared to urban and suburban service Maximum speed reached is high Distance between the stops is more All of the listed here Acceleration and retardation rates are low Maximum speed reached is high Distance between the stops is more All of the listed here Acceleration and retardation rates are low ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following is the advantage of electric braking? It avoids wear of track More heat is generated during braking It is instantaneous Motor continues to remain loaded during braking It avoids wear of track More heat is generated during braking It is instantaneous Motor continues to remain loaded during braking ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In case of a steam engine an average coal consumption per km is nearly 60 to 80 kg 28 to 30 kg 100 to 120 kg 150 to 175 kg 60 to 80 kg 28 to 30 kg 100 to 120 kg 150 to 175 kg ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS