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<=KNEC Craft Certificate in Electrical and Electronics Engineering(Power Option) Module II : Industrial Machines and Control Past Paper July 2022
Draw a labeled power circuit diagram of the star-delta starter for a three phase induction motor
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Questions List:
1. State four types of motor enclosure
2. Draw a labeled schematic diagram of a series of a d.c motor
3. Describe the principle of operation of a d.c motor
4. List four component parts of a contactor control system
5. Draw a labeled power circuit diagram of the star-delta starter for a three phase induction motor
6. Name four methods of a speed control of three induction motor
7. Explain ‘under voltage’
8. State the effects of under voltage
9. With aid of a schematic diagram, explain the operation of an electromagnetic relay
10. List three standards observed when wiring machines
11. List Two test done on installed electrical machine for proper operation
12. State four demerits of analogue tape recorders
13. With aid of a labeled diagram, describe the element of an instrumentation system
14. Explain each of the following with reference to programmable logic controllers (PLCs). i)Input address ii)Shift Address
15. Figure 2 shows ladder logic diagram. Describe its operations
1. State four types of motor enclosure
2. Draw a labeled schematic diagram of a series of a d.c motor
3. Describe the principle of operation of a d.c motor
4. List four component parts of a contactor control system
5. Draw a labeled power circuit diagram of the star-delta starter for a three phase induction motor
6. Name four methods of a speed control of three induction motor
7. Explain ‘under voltage’
8. State the effects of under voltage
9. With aid of a schematic diagram, explain the operation of an electromagnetic relay
10. List three standards observed when wiring machines
11. List Two test done on installed electrical machine for proper operation
12. State four demerits of analogue tape recorders
13. With aid of a labeled diagram, describe the element of an instrumentation system
14. Explain each of the following with reference to programmable logic controllers (PLCs). i)Input address ii)Shift Address
15. Figure 2 shows ladder logic diagram. Describe its operations
