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<=KNEC Craft Certificate in Electrical and Electronics Engineering(Power Option) Module II : Industrial Machines and Control Past Paper July 2017
Outline the procedure of mounting a motor on a slide rail assembly on a concrete floor
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Questions List:
1. Explain the reason why a single phase induction motor is not self-starting
2. With aid of a labeled circuit diagram, explain the operation of a capacitor start single phase induction motor
3. Explain how cooling is achieved in the following motor enclosures: (i) Pipe ventilated type; (ii) Screen protected type.
4. Outline three IEE regulation requirement regarding electric motors;
5. Outline three factors to be considered when selecting a motor for a particular drive
6. Explain the functions of the following elements of an instrumentation system: -Transducer; -Signal conditioner
7. With the aid of a well labeled block diagram, explain the function of the elements of a programmable Logic Controller system (PLCs).
8. Draw a PLC ladder diagram for the control of a forward reverse starter of a three phase induction motor
9. State two features of a homopolar motor;
10. State three qualities of a d.c motor starter
11. Outline the procedure of mounting a motor on a slide rail assembly on a concrete floor
12. Draw a circuit diagram of a forward reverse starter for a three phase induction motor
1. Explain the reason why a single phase induction motor is not self-starting
2. With aid of a labeled circuit diagram, explain the operation of a capacitor start single phase induction motor
3. Explain how cooling is achieved in the following motor enclosures: (i) Pipe ventilated type; (ii) Screen protected type.
4. Outline three IEE regulation requirement regarding electric motors;
5. Outline three factors to be considered when selecting a motor for a particular drive
6. Explain the functions of the following elements of an instrumentation system: -Transducer; -Signal conditioner
7. With the aid of a well labeled block diagram, explain the function of the elements of a programmable Logic Controller system (PLCs).
8. Draw a PLC ladder diagram for the control of a forward reverse starter of a three phase induction motor
9. State two features of a homopolar motor;
10. State three qualities of a d.c motor starter
11. Outline the procedure of mounting a motor on a slide rail assembly on a concrete floor
12. Draw a circuit diagram of a forward reverse starter for a three phase induction motor
