A. reduce friction
B. increase friction
C. facilitate braking
D. facilitate in taking turns
Related Mcqs:
- Locomotives with monometer bogies have_________________?
A. uneven distribution of tractive effect
B. suitability for passanger as well as freight service
C. lot of skidding
D. low co-efficient of adhesion - The air resistance to the movement of the train is proportional to_____________?
A. speed
B. (speed)
C. (speed)
D. 1/speed - The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to_____________/
A. 5
B. 10
C. 14
D. 17 - The speed of a superfast train is______________?
A. 60 kmph
B. 75 kmph
C. 100 kmph
D. more than 100 kmph - 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 - The resistance encountered by a train in motion is on account of_________________?
A. resistance offered by air
B. friction at the track
C. friction at various parts of the rolling stock
D. all of the above - 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 - Power for lighting in passanger coach, in a long distance electric train, is provided_________________?
A. directly through overhead electric line
B. through individual generator of bogie and batteries
C. through rails
D. through locomotive - Tractive effort is required to_____________?
A. overcome the gravity component of train mass
B. overcome friction, windage and curve resistance
C. accelerate the train mass
D. do all of the above - The steam engine provided on steam locomotives is____________?
A. single acting condensing type
B. single acting non-condensing type
E. double acting condensing type
D. double acting non-condensing type
