A. Mail and express trains
B. Superfast trains
C. Suburban and Urban electric trains
D. All trains
Related Mcqs:
- The voltage used for suburban trains in D.C. system is usually_______________?
A. 12 V
B. 24 V
C. 220 V
D. 600 to 750 V - ________________is preferred for automatic drives?
A. Squirrel cage induction motor
B. Synchronous motors
C. Ward-Leonard controlled D.C. motors
D. Any of the above - Which of the following is the voltage for single phase A.C. system ?
A. 22 V
B. 440 V
C. 5 kV
D. 15 kV
E. None of the above - Which of the following is the advantage of electric braking ?
A. It avoids wear of track
B. Motor continues to remain loaded during braking
C. It is instantaneous
D. More heat is generated during braking - The pulsating torque exerted by steam locomotives causes which of the following ?
A. Jolting and skidding
B. Hammer blow
C. Pitching
D. All of the above - The specific energy consumption of a train depends on which of the following ?
A. Acceleration and retardation
B. Gradient
C. Distance covered
D. All of the above - Which of the following braking systems is used on steam locomotives ?
A. Hydraulic system
B. Pneumatic system
C. Vacuum system
D. None of the above - Series motor is not suited for traction duty due to which of the following account ?
A. Less current drain on the heavy load torque
B. Current surges after temporary switching off supply
C. Self relieving property
D. Commutating property at heavy load - Energy consumption in propelling the train is required for which of the following?
A. Work against the resistance to motion
B. Work against gravity while moving up the gradient
C. Acceleration
D. All of the above - If the co-efficient of adhesion on dry rails is 0.26, which of the following could be the value for wet rails ?
A. 0.3
B. 0.26
C. 0.225
D. 0.16
