Electrical Heating MCQ Part 5
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Attempt Free Electrical Heating MCQ Part 5 Here. Read The Important Electrical MCQ From Below.
Q1. 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
Answer : A
Q2. Speed-time curve of main line service differs from those of urban and suburban services on following account
A. it has longer free running period
B. it has longer coasting period
C. accelerating and bralting periods are comparatively smaller
D. all of the above
Answer : D
Electrical Heating MCQ Part 5
Q3. 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
Answer : D
Q4. Series motor is not suitable 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
Answer : B
Electrical Heating MCQ Part 5
Q5. Specific energy consumption is least in ____ service.
A. main line
B. urban
C. suburban
Answer : A
Q6. Which of the following happens in Kando system ?
A. Three phase AC. is converted into D.C.
B. Single phase A.C. is converted into D.C.
C. Single phase supply is converted into three phase system
D. None of the above
Answer : C
Electrical Heating MCQ Part 5
Q7. _____ is the method of braking in which motor armature remains connected to the supply and draws power from it producing torque opposite to the direction of motion.
A. Rheostatic braking
B. Regerative braking
C. Plugging
Answer : C
Q8. ____ locomotive has the highest operational availability.
A. Electric
B. Diesel
C. Steam
Answer : A
Electrical Heating MCQ Part 5
Q9. The steam engine provided on steam locomotives is
A. single acting condensing type
B. single acting non-condensing type
C. double acting condensing type
D. double acting non-condensing type
Answer : D
Q10.Which of the following braking systems on the locomotives is costly ?
A. Regenerative braking on electric locomotives
B. Vacuum braking on diesel locomotives
C. Vacuum braking on steam locomotives
D. All braking systems are equally costly
Answer : A
Electrical Heating MCQ Part 5
Q11. The rate of acceleration on suburban or urban services is restricted by the consideration of
A. engine power
B. track curves
C. passanger discomfort
D. track size
Answer : C
Q12.Battery operated trucks are used in
A. steel mills
B. power stations
C. narrow gauge traction
D. factories for material transportation
Answer : D
Electrical Heating MCQ Part 5
Q13. When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when
A. wheel base of axles is more
B. degree of curvature is more
C. (a)(b)
D. none of the above
Answer : C
Q14. 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
Answer : B
Electrical Heating MCQ Part 5
Q15. For which of the following locomotives the maintenance requirements are the least ?
A. Steam locomotives
B. Diesel locomotives
C. Electric locomotives [Correct Answer]
D. Equal in all of the above
Answer : C
