MCQ on Motor Control Center

1 Answer

Answer :

1. MCC stands for ______
a. Motor Control Center
b. Motor Control Cost
c. Machine Components Center
d. None of the above
Answer : a. Motor Control Center

2. MCC contains _____
a. Fuse
b. MCB
c. MCCB
d. All of the above
Answer : d

3. MCC's are typically found in _____
a. large commercial
b. industrial buildings
c. both a and b
d. none of the above
Answer : c

4. MCC types are based on _____
a. Based on the voltage supplied
b. Based on the type of operation
c. Based on module division
d. All of the above
Answer : d

5. The consideration involved in the selection of the type of electric drive for a particular application depends upon
a. Speed control range and its nature
b. Starting Nature
b. Environmental condition
d. All of the above
Answer : d

6. Which of the MCC consists of microprocessor/microcontroller ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

7. Which of the MCC is easy to install ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

8. Which of the MCC is more costly ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

9. Which of the MCC has more future expansion?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

10. Which of the MCC contain smart relay ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

11. Which of the MCC stores information and monitor motor?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

12. Which of the MCC requires lower maintenance ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

13. Which of the MCC help reduce labor and installation material costs and shorten commissioning time ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

14. Which of the MCC has diagnostic and protective functionalities ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

15. Which of the MCC has low cost ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : a

16. The types of industrial networks are _____
a. Ethernet/IP
b. Modbus RTU/TCP
c. Profibus
d. All of the above
Answer : d

17. Intelligent relay can be program to trigger on_____
a. voltage
b. current
c. frequency
d. all of the above
Answer : d

18. Smart fuses include _____
a. battery protection
b. fuse
c. both
d none
Answer : c

19. IMCC stands for _____
a. Intelligent Motor Control Center
b. Instant Motor Carrying Control
c. Imaginary Motor Control Center
d. None
Answer : a

20. Which of the MCC has security and dedicated software ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : b

21. Which of the MCC has more faults ?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : a

22. Which of the MCC has a lot of wirings?
a. Conventional MCC
b. Intelligent MCC
c. Both
d. None
Answer : a

23. PLC stands for _____
a. Programmable Logic Controller
b. Pre Lock Controller
c. Processor Logic Cost
d. None of the above
Answer : a

24. SCADA stands for ____
a. Super Control and Data Administration
b. Supervisory Control and Data Acquisition
c. State Control and Data Control
d. None
Answer : b

25. What is the need of IMCC ?
a. It makes the system automatic and removes the manual operations.
b. It is more precise than traditional MCC
c. Less manual work is required
d. All of the above
Answer : d

26. What are the disadvantages of conventional MCC ?
a. Cost
b. Manually operated
c. Maybe difficult to identify faulty in MCC
d. All of the above
Answer : d
27. Motor control centers have been around since ____
a. 1950
b. 2000
c. 2010
d. 2020
Answer : a

28. For selecting MCC ______ should be consider
a. cost  
b. future expansion
c. features
d. all of the above
Answer : d

29. MPCB stands for
a. motor protection circuit breaker
b. motor power circuit breaker
c. machine protection control breaker
d. none
Answer : a

30. MCCB  stands for
a. Moulded Case Circuit Breaker
b. Motor Case Circuit Breaker
c. Machine Control
d. none
Answer : a

31. A relay is said to be intelligent if it has the feature/s of
a) Built-in network communication
b) Programming facility to set the protective parameters
c) Diagnostics
d) All of the above
Answer : b

32. In smart fuse ____
a. voltage can be programmatically set
b. current can be programmatically set
c. both
d. none
Answer : c

33. The main function of the fuse is _____
a. prevent excessive current
b. open the circuit
c. close the circuit
d. none
Answer : a

34. The relay is a ______
a. electromagnetic switch
b. electrical switch
c. mechanical switch
d. none
Answer : a

35. IMCC requires…
a. Effective communication networks with high bandwidths
b. Extensive process data
c. Components for Proper diagnostic features
d. All of the above
Answer : d
36. Intelligent MCC is smart MCC because.
a. It has multiple feeders
b. It has a common power busbar
c. It has multiple combination starters
d. It has communication capable motor management device
Answer : d

37. Motor control involves….
a. Starting the motor.
b. Stopping the motor.
c. Direction and speed controls of the motor.
d. All of the above.
Answer : d

38. Identify the component/s of the motor-supply circuit.
a) Circuit-breaker.
b) Fuse.
c) Power Contacts.
d) All of the above
Answer : d

39. Red push-button is generally used to…
a) Start the motor
b) Accelerate the motor
c) Decelerate the motor
d) Stop the motor
Answer : d

40. Green push-button is generally used to…
a) Start the motor
b) Accelerate the motor
c) Decelerate the motor
d) Stop the motor
Answer : a

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