Electrical Appliances, 66722 – Course Outline [ Diploma in Electrical Engineering, BTEB ]

Electrical Appliances – Course Outline [ Diploma in Electrical Engineering, BTEB ]

Course Code : 66711

Marks Distribution: T=3, P=3, C=4

 

Electrical Appliances -1 [Course Outline]

OBJECTIVES:

• To develop understanding and skill on the construction and operation of electrical appliances based on heating principle.
• To develop understanding and skill on the construction and operation of appliances operated by electric motor.
• To enable to acquire skill/competence in diagnosing/localizing faults and repairing & servicing of electrical appliances.

SHORT DESCRIPTION:

Electric iron; Electric heater; Rice cooker; Electric Kettle; Geyser; Electric fan; Rechargeable (Emergency) lamp; Vacuum Cleaner; Blower; Dehumidifier; Blender; Washing machine; Refrigerator; Air conditioner; Microwave oven;

DETAIL DESCRIPTION

THEORY

Basic principle of electric appliances.

State the meaning of electric appliances.
List the names of appliances based on heating principles.
List the names of the appliances operated by electric motor.

Electric iron.

Define electric iron.
List different types of electric irons.
Difference between an ordinary and an automatic electric iron.
Identify different parts of an electric iron.
State the operating principles of an electric iron.
Explain the operation of thermostat in an automatic electric iron.
List the possible faults and their causes and remedies of an electric iron.

Electric heater.

Define electric heater.
List different types of electric heater.
List different parts of a room heater, surface heater and water heater.
List the possible faults and their causes and remedies of an electric heater.

Rice cooker.

Define rice cooker.
Describe the function of a rice cooker.
List the main parts of a rice cooker.
List the possible faults and their causes and remedies of a rice cooker.

Electric Kettle.

State Principle of operation of electric Kettle.
List deferent parts of electric Kettle.
List the possible faults and their causes and remedies of an electric kettle.

Geyser.

Define geyser.
List the different parts of geyser.
Mention the safety precaution of Geyser.
List of possible faults and causes and their remedies of a geyser.

Table fan/pedestal fan.

Define table fan/pedestal fan.
Describe the function of a table fan/pedestal fan.
List different parts of a table fan/pedestal fan.
List various components of an electronic fan regulator.
State the operation of an electronic fan regulator.
List the possible faults and their causes and remedies of a table fan/pedestal fan.

Rechargeable (emergency) lamp.

Define rechargeable lamp.
Explain the working principle of a rechargeable lamp.
Name the different parts of a rechargeable lamp.
List the possible faults and their causes and remedies of a rechargeable lamp.

Vacuum cleaner.

Define vacuum cleaner.
State the working principle of a vacuum cleaner.
Name the different parts of a vacuum cleaner.
List the possible faults and their causes and remedies of a vacuum cleaner.

Electric blower.

State the working principle of an electric blower.
Name the different parts of an electric blower.
List the possible faults and their causes and remedies of a electric blower.

De-humidifier.

State the principle of operation of a dehumidifier.
Name different parts and their function of a dehumidifier.
Sketch the circuit diagram of a de-humidifier.
List the possible faults and their causes and remedies of a de-humidifier.

Blender.

State the principle of operation of a blender.
List the different parts of a blender.
State the function of the timer in a blender.
List the possible faults and their causes and remedies of a blender.

Washing machine.

Define washing machine.
List the different types of washing machine
State the working principle of operation of a washing machine.
List the different parts of a washing machine.
Explain the function of the timer in a washing machine.
List the possible troubles and their causes and remedies of a washing machine.

Refrigerator.

Define refrigerator.
List of different components of refrigerator.
State the function of different components of refrigerator
List the possible faults and their causes and remedies of a refrigerator.

Air conditioner.

State the principle of operation of an air conditioner.
List different parts of an air conditioner.
State the function of filter, ducts and grills, air-conditioning circuit, control, cooling unit and electrical control unit.
List the possible electrical faults and their causes and remedies of an air conditioner.

Microwave oven.

Describe the function of a microwave oven.
List the main parts of a microwave oven.
List different parts of heat control and timer in an oven.
Describe the function of heat control and timer in an oven.
List the possible faults and their causes and remedies of a microwave oven.

PRACTICAL

1 Perform maintenance and servicing an electric iron.

1.1 Select the equipment and tools necessary for disassembling and servicing an electric iron.
1.2 Disassemble the electric iron.
1.3 State the different parts of the electric iron.
1.4 Observe the heating element and operation of thermostat in the electric iron.
1.5 Diagnose the possible problems in the electric iron.
1.6 Repair or replace the defective parts, if any.
1.7 Reassemble the parts and connect the iron to the power source.

2. Perform maintenance and servicing of different types of electric heaters.

2.1 Disassemble the different parts of the electric heater.
2.2 Sketch the main parts of the electric heater.
2.3 Sketch the circuit diagram of a single throw and a double throw thermostatic control electric heater.
2.4 Identify the possible troubles in a heater with causes and remedies.
2.5 Repair or replace the defective parts of the heater, if any.
2.6 Reassemble the parts of the heater.
2.7 Connect the heater to service.

3. Perform repair and maintenance of a rice cooker.

3.1 Disassemble the parts of the rice cooker.
3.2 Sketch the main parts of the rice cooker.
3.3 Identify possible troubles with causes and remedies of a rice cooker.
3.4 Assemble the parts of the rice cooker.
3.5 Connect the cooker to the power source.

4. Perform the operation of a Geyser

4.1 Select the necessary tools for disassemble & assemble the components of Geyser
4.2 Sketch the diagram
4.3 Select the different ranges of Geyser.
4.4 Connect the Geyser to the power source. 4.5 Observe the operation.

5. Perform the operation and maintenance of an Electric Kettle.

5.1 Select the necessary hand tools for disassemble and assemble the electrical components of the electric kettle.
5.2 Disassemble and assemble the electric kettle.
5.3 Sketch the diagram.
5.4 Connect into the power source.
5.5 Observe the operation.

6. Perform repair and maintenance of an oscillatory type fan.

6.1 Disassemble the different parts of the table fan/pedestal fan.
6.2 Observe the oscillatory mechanism of the oscillating type of fan.
6.3 Sketch the different parts of the fan.
6.4 Assemble the fan and connect to the power supply.
6.5 Observe the operation.

7. Perform repair and maintenance of a rechargeable (emergency) lamp.

7.1 Disassemble the rechargeable (emergency) lamp.
7.2 Sketch the different parts of the rechargeable lamp.
7.3 Test the battery of the lamp. Check the parts to ensure its sound condition.
7.4 Repair and replace the defective parts, if any.
7.5 Reassemble the lamp and connect to the power source.
7.6 Observe the charging and discharging condition.

8. Perform repair and maintenance of an electric blower.

8.1 Disassemble the parts of the electric blower.
8.2 Sketch the main parts of the electric blower.
8.3 Check the parts to ensure the sound condition.
8.4 Repair or replace the defective parts, if any.
8.5 Reassemble the parts.
8.6 Connect the appliances to the power source.
8.7 Observe the operation.

9. Perform repair and maintenance of a vacuum cleaner.

9.1 Disassemble the parts of the vacuum cleaner.
9.2 Sketch the main parts of the vacuum cleaner.
9.3 Check the parts to ensure the sound condition.
9.4 Repair or replace the defective parts, if any.
9.5 Reassemble the parts.
9.6 Connect the appliances to the power source.
9.7 Observe the operation.

10. Study a dehumidifier.

10.1 Disassemble the dehumidifier.
10.2 Sketch the main parts of the dehumidifier.
10.3 Identify the major troubles with remedies.
10.4 Reassemble the parts.
10.5 Connect the dehumidifier to the power supply.
10.6 Observe the operation.

11. Perform repair and maintenance of a blender.

11.1 Disassemble the blender.
11.2 Sketch the main parts.
11.3 Identify the major faults generally occurred in a blender.
11.4 Assemble the blender.
11.5 Connect the blender to the power supply.
11.6 Observe the operation.

12. Perform repair and maintenance of a washing machine.

12.1 Identify the main parts of the washing machine.
12.2 Sketch the main parts of the washing machine.
12.3 Sketch the electrical circuit of the washing machine.
12.4 Draw the complete washing cycle of washing machine.
12.5 Dissemble the major components.
12.6 Make a visual observation.
12.7 Reassemble the parts.
12.8 Connect the washing machine to the power supply.
12.9 Observe the operation.

13. Perform repair and maintenance of electrical components of a refrigerator.

13.1 Identify the different parts of the refrigerator.
13.2 Identify the electrical components of the refrigerator.
13.3 Sketch the wiring circuit showing electrical control system.
13.4 Note down the maintenance procedure of a refrigerator.
13.5 Disassemble and assemble the thermostat control.
13.6 Connect into the power source.
13.7 Observe the operation.

14. Perform repair and maintenance of electrical components of air-conditioner.

14.1 List the main parts of the air-conditioner.
14.2 Sketch the main section namely fan with motor, filter, ducts and grill, air conditioning control, cooling unit and electrical control unit.
14.3 Sketch the wiring diagram.
14.4 Disassemble and assemble the electrical components of the air conditioner.
14.5 Connect the air conditioner to the power supply.
14.6 Observe the operation.

15. Perform maintenance and servicing of a microwave oven.

15.1 Disassemble the microwave oven.
15.2 Sketch the main parts of the microwave oven.
15.3 Make a visual study and test the different parts.
15.4 Sketch the electrical circuit diagram of the microwave oven.
15.5 List possible troubles with causes and remedies of a microwave oven.
15.6 Assemble the parts and connect the oven to the power source.
15.7 Observe the operation.

Reference Books:

1. Home appliances Service Guide – Edwin P. Anderson.
2. Study of electrical appliances and devices – K.B Bhatia
3. Electrical home appliances service manual -S. K . Gupta, Gt publication
4. Principle of Refrigeration – Dossat

 

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