ELECTRICIAN 2nd YEAR MODULE – Control Panel Wiring ONLINE TEST

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Question 1 of 37

1. How to protect the cable from insects and rats into the panel?

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Question 2 of 37

2. Why is sequential control of motors required in industrial applications?

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3. What is the purpose of control transformer used in control panel wiring?

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Question 4 of 37

4. Which is the correct sequence operation of contactors for operating automatic star-delta starter?

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Question 5 of 37

5. What is the name of the wiring accessory used in control panel wiring?

Question 5 of 37

Question 6 of 37

6. What is the criteria to select the contactor?

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Question 7 of 37

7. What is the use of 'G' channels in control panel?

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Question 8 of 37

8. Which device controls the operations in sequential control systems?

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Question 9 of 37

9. Why are control panels provided with control transformer?

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Question 10 of 37

10. Which accessory is used to mount MCB, OLR in the panel board without using screws?

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Question 11 of 37

11. Which device is avoided in the panel board assembly?

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Question 12 of 37

12. Why power and control wirings run in separate race ways?

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Question 13 of 37

13. How should control circuit voltage and power in a contactor be selected?

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Question 14 of 37

14. Which DC load is represented by the DC4 standard duty cycle of contactors?

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Question 15 of 37

15. Which supply is indicated by the color of conductor exhibited on Red, Blue and Black?

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Question 16 of 37

16. What is the name of the device marked as 'X'?

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Question 17 of 37

17. How are the contacts in a contactor engaged for working?

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Question 18 of 37

18. What is the function of limit switch in control panel wiring?

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Question 19 of 37

19. Why the motor is not changing the direction, if reverse push button is pressed in forward and reverse control star delta starter?

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Question 20 of 37

20. Which is the standard duty cycle code of the contactor for starting and stopping the AC resistive and inductive load?

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Question 21 of 37

21. What is the name of the accessory used in control panel wiring?

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Question 22 of 37

22. Which switch with an actuator is operated by the motion of a machine or part of an object?

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Question 23 of 37

23. Which type of device protects motors from over heating and over loading in a panel board?

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Question 24 of 37

24. Which device protects from overload and short circuit in a panel board?

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Question 25 of 37

25. What is the purpose of DIN-rail used in control panel wiring?

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Question 26 of 37

26. What is the name of the device marked as 'X' in the circuit?

Question 26 of 37

Question 27 of 37

27. What is the name of the accessory used in control panel wiring?

Question 27 of 37

Question 28 of 37

28. What essential feature to be considered while designing a layout of control panel?

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Question 29 of 37

29. What is the use of PVC channel in a control panel wiring?

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30. Which cable ties are used to bunch the wires?

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Question 31 of 37

31. Which circuit uses limit switches?

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Question 32 of 37

32. What is the purpose of thermal overload relay in control panel?

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Question 33 of 37

33. Which device prevents flare out of stripped and stranded cables in the panel board?

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Question 34 of 37

34. What happens if time delay relay of an auto star-delta starter remains in closed condition after starting?

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Question 35 of 37

35. What is the reason for providing two separate Earthings in panel board?

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36. Which switch is operated at OFF load condition?

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Question 37 of 37

37. Which material is used to make open frame bimetallic adjustable thermostat contacts?

Question 37 of 37


 

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