EE8353 Question Bank ELECTRICAL DRIVES AND CONTROLS
EE8353 Question Bank ELECTRICAL DRIVES AND CONTROLS Regulation 2017 Anna University free download. ELECTRICAL DRIVES AND CONTROLS Question Bank EE8353 pdf free download.
Sample EE8353 Question Bank ELECTRICAL DRIVES AND CONTROLS:
PART A – (2 Mark) EE8353 Question Bank Electrical Drives and Controls
1. Why motor characteristics are important?
2. Why DC series motor should never be started on no-load?
3. Why a fly-wheel setup is used in DC series motor?
4. Why differential compound motors are not used in practical?
5. What is the main reason of fitting fly-wheel along with the motor?
6. Draw the mechanical (or) speed –torque characteristics of all type of DC Motors. EE8353 Question Bank Electrical Drives and Controls
7. State the condition at which the starting toque developed in a slip-ring induction motor is
maximum.
8. State the different modes of operation of three phase induction machines.
9. What is mechanical characteristics of a motor?
10. Give the application where DC Shunt, DC Series and DC Compound motors are used. EE8353 Question Bank Electrical Drives and Controls
11. Draw the torque-slip characteristics of a three phase squirrel cage induction motor.
12. What is meant by braking?
13. Mention the Classifications of Braking.
14. What are the advantages and disadvantages of Electrical Braking?
15. Explain the plugging method of braking.
16. Why regenerative braking is not possible ion DC Series motor without modification?
17. Give the types of braking used for DC Motors.
18. What is meant by Regenerative braking in DC Motor?
19. Mention the demerits of mechanical braking.
Part B – (16 Mark) EE8353 Question Bank Electrical Drives and Controls
1. (i). List out the advantages and disadvantages of electrical braking over
mechanical braking.(8) EE8353 Question Bank Electrical Drives and Controls
(ii).Discuss any one method of electrical braking of DC Machines.(8)
2. Explain the Speed-Torque characteristics of three phase induction motor
with neat diagrams.(16)
3. Explain about the speed-torque characteristics of a DC Shunt Motor with
suitable graph and equations.(16) EE8353 Question Bank Electrical Drives and Controls
4. Explain about the quadrantal diagram of speed-torque characteristics for
a motor driving hoist load.(16)
5. Explain how an induction motor is brought to stop by (i) Plugging and
(ii).dynamic braking.(16)
6. Explain the various methods of braking of induction motors.(16) EE8353 Question Bank Electrical Drives and Controls
| Subject name | ELECTRICAL DRIVES AND CONTROLS |
| Semester | 3 |
| Subject Code | EE8353 |
| Regulation | 2017 regulation |
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