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Electronic Mechanic Practice Test: Electrical Control Circuits
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Electronic Mechanic Practice Test: Electrical Control Circuits
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25 Questions

1. What is the starting torque of Class-C type squirrel cage motor in the rated speed?
2. What is the class of squirrel cage induction motor according to the starting characteristics?
3. Which motors are used on loads having high inertia and long acceleration period?
4. What is the name of the centrifugal switch part marked ‘X’?
5. Which single phase induction motor is rated for less than 1HP?
6. Why squirrel cage induction motor is preferred for efficient performance?
7. Which single phase induction motor is rated for less than 1HP?
8. What is the full load current of a 10 HP, three phase, 415 V squirrel-cage motor?
9. What is the result on the split-phase motor by changing the main winding terminals?
10. How much starting torque is achieved by the Class-D type squirrel cage motor?
11. Which induction motor is preferred for constant speed with high efficiency performance?
12. What is the synchronous speed (Ns) of a 3phase induction motor with 8 poles working at 50 Hz?
13. How the centrifugal switch is connected in a capacitor start, induction-run motor?
14. Which motor is characterised by low rotor circuit resistance and reactance?
15. What is the full load current of a 10 HP, three phase, 415 V squirrel-cage motor?
16. What is the name of the torque speed characteristics curve of the motor?
17. What is the class of squirrel cage induction motor according to the starting characteristics?
18. Which test is conducted through the circuit?
19. Which type of switch is used in the capacitor start, induction run motor?
20. Which test is conducted through the circuit?
21. Which class of squirrel case induction motor is taking normal starting torque and used for general purpose?
22. How the overload relay in a manual D.O.L starter is activated during heavy load current?
23. Which motors are used on loads having high inertia and long acceleration period?
24. What is the result on the split-phase motor by changing the main winding terminals?
25. Which induction motor is preferred for constant speed with high efficiency performance?

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