A. 0.12
B. 0.25
C. 0.40
D. 0.75
The normal value of adhesion friction is______________? Read More »
Electric Traction, Electrical Engineering Mcqs A. it has longer free running period
B. it has longer coasting period
C. accelerating and braking periods are comparatively smaller
D. all of the above
A. Acceleration and retardation
B. Gradient
C. Distance covered
D. All of the above
The specific energy consumption of a train depends on which of the following ? Read More »
Electric Traction, Electrical Engineering Mcqs A. speed
B. (speed)
C. (speed)
D. 1/speed
The air resistance to the movement of the train is proportional to_____________? Read More »
Electric Traction, Electrical Engineering Mcqs A. Jolting and skidding
B. Hammer blow
C. Pitching
D. All of the above
The pulsating torque exerted by steam locomotives causes which of the following ? Read More »
Electric Traction, Electrical Engineering Mcqs A. Sand on rails
B. Dew on rails
C. Oil on the rails
D. both B. and C.
Co-efficient of adhesion reduces due to the presence of which of the following ? Read More »
Electric Traction, Electrical Engineering Mcqs 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
Tractive effort is required to_____________? Read More »
Electric Traction, Electrical Engineering Mcqs A. Rust on the rails
B. Dust on the rails
C. Sand on the rails
D. All of the above
Due to which of the following co-efficient of adhesion improves ? Read More »
Electric Traction, Electrical Engineering Mcqs A. less than that of D.C. locomotive
B. more than that of D.C. locomotive
C. equal to that of D.C. locomotive
D. none of the above
For given maximum axle load tractive efforts of AC. locomotive will be_____________? Read More »
Electric Traction, Electrical Engineering Mcqs 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
Which of the following is the advantage of electric braking ? Read More »
Electric Traction, Electrical Engineering Mcqs