Breaking, Mechanical Considerations and Control Equipment Interview Questions:

Following are the below Breaking, Mechanical Considerations and Control Equipment Interview Questions and Important Questions which is very useful for interviews and exams

1. Discuss a method of electric braking for traction motors.

2. Describe how plugging and rheostatic braking are employed with dc motors.

3. With the help of neat diagram, briefly explain ‘French method of regenerative braking’ with series motors.

4. State the condition under which regenerative braking with dc series motors is possible. With the aid of diagram of connection, explain the various methods of providing regeneration.

5. Show how regenrative braking is applied to a dc series motor when there are at least two motors working in parallel. How to compensate the effect of variation of voltage in the overhead line ?

6. Explain how regenerative braking can be obtained with traction motors.

7. What are the advantages and disadvantages of regenerative braking of electric traction motor ?

8. Explain briefly how regenerative braking differs from other methods of braking traction motors and also write the usefulness of this method of braking with (a) dc series motors and (b) ac series motors in traction.

9. What are the conditions necessary to achieve electric regenerative braking ?

10. Explain the suitability of to) dc series motor and (b) three-phase induction motor for the purpose of electric regenerative braking.

11. What are the advantages of regenerative braking ? Explain how regenerative braking can be obtained in dc locomotives.

12. Explain how hydraulic and eddy current brake works. What are their advantages ?

13. What is mechanical regenerative braking and what are its advantages ?

14. Explain with proper diagram the following braking systems used in traction: (a) Vacuum brake (b) Compressed air brake (c) Magnetic track brake (d) Electromechanical drum brake (e) Regen­erative braking with 3-Φ induction motors.

15. Describe the various methods of drives which have been applied for transmitting motive power from motor shaft to driving wheels.

16. Explain the method of Quill drive of transmitting power from the motor to the driving wheels.

17. State with sketches, the three important methods of trans­mission of mechanical power from traction motor to the driving wheels.

18. Explain multiple unit control of dc motors.

19. Describe the auxiliary electrical equipment for an electric locomotive.

20. Write short notes on the following:

• Electric braking in traction motors.
• Plugging.
• Reverse current braking.
• Regenerative braking.
• Vacuum brakes.
• Quill drive.
• Nose suspended motor.
• Methods of transmission of power from motors to driving wheels.
• Multiple unit control.
• Auxiliary equipment for electric locomotives.