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<=KNEC Craft Certificate in Electrical and Electronics Engineering(Power Option) Module II : Industrial Machines and Control Past Paper July 2020
Explain how each of the following should satisfy the requirement of installation and mounting of motors:
i)Foundation
ii)Alignment
iii)Coupling
i)Foundation
ii)Alignment
iii)Coupling
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Questions List:
1. With aid of circuit diagram, explain the operation of a d.c series motor
2. State three merits of three phase induction motor
3. A 4-pole three phase induction motor operated from 60Hz supply runs at a speed of 1750 rpm. Determine its slip
4. Illustrate the direct on line starter for a three phase induction motor
5. Explain the function of each of the following motor control devices: (iii) Thermal relay; IV) Electromagnetic contactor.
6. Draw a labeled circuit diagram of the ward Leonard speed control method
7. State four disadvantages of the Leonard speed control method over electronic speed control method
8. Explain how each of the following should satisfy the requirement of installation and mounting of motors: i)Foundation ii)Alignment iii)Coupling
9. List three; Tests carried out on industrial control panels; Components found in industrial control panels
10. Draw a labeled block diagram of a programmable logic control system
1. With aid of circuit diagram, explain the operation of a d.c series motor
2. State three merits of three phase induction motor
3. A 4-pole three phase induction motor operated from 60Hz supply runs at a speed of 1750 rpm. Determine its slip
4. Illustrate the direct on line starter for a three phase induction motor
5. Explain the function of each of the following motor control devices: (iii) Thermal relay; IV) Electromagnetic contactor.
6. Draw a labeled circuit diagram of the ward Leonard speed control method
7. State four disadvantages of the Leonard speed control method over electronic speed control method
8. Explain how each of the following should satisfy the requirement of installation and mounting of motors: i)Foundation ii)Alignment iii)Coupling
9. List three; Tests carried out on industrial control panels; Components found in industrial control panels
10. Draw a labeled block diagram of a programmable logic control system
