Electric Traction Long distance railways use which of the following? 200 V D.C. 25 kV two phase A.C. 25 kV three phase A.C. 25 kV single phase A.C. 200 V D.C. 25 kV two phase A.C. 25 kV three phase A.C. 25 kV single phase A.C. ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following braking systems on the locomotives is costly? Vacuum braking on steam locomotives Vacuum braking on diesel locomotives Regenerative braking on electric locomotives All braking systems are equally costly Vacuum braking on steam locomotives Vacuum braking on diesel locomotives Regenerative braking on electric locomotives All braking systems are equally costly ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Series motor is not suited for traction duty due to which of the following account? Commutating property at heavy load Current surges after temporary switching off supply Less current drain on the heavy load torque Self relieving property Commutating property at heavy load Current surges after temporary switching off supply Less current drain on the heavy load torque Self relieving property ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The speed of a locomotive is controlled by Regulating steam flow to engine Gear box Applying brakes Flywheel Regulating steam flow to engine Gear box Applying brakes Flywheel ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Energy consumption in propelling the train is required for which of the following? Acceleration Work against gravity while moving up the gradient Work against the resistance to motion All of the listed here Acceleration Work against gravity while moving up the gradient Work against the resistance to motion All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction For 25 kV single phase system power supply frequency is 100 Hz 50 Hz 25 Hz 60 Hz 100 Hz 50 Hz 25 Hz 60 Hz ANSWER DOWNLOAD EXAMIANS APP
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