- 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; Microwave oven; Rice cooker; Toaster, Hair drier, electric shaving machine, Kettle Geyser. Electric fan; Rechargeable lamp; Vacuum Cleaner; Blower; Dehumidifier; Blender; Washing machine; Water pump; Refrigerator; Air conditioner; Lift and escalator.
DETAIL DESCRIPTION
Theory :
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Understand the 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.
- State the related codes of electric heating appliances.
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Understand the working principle of electric iron.
- Name different types of electric irons.
- Differentiate between an ordinary and an automatic electric iron.
- Identify different parts of an electric iron.
- Sketch the circuit diagram of an electric iron.
- Explain the operating principles of an electric iron.
- Explain the operation of thermostat in an automatic electric iron.
- Explain the construction and operation of a steam iron.
- List the possible faults and their causes and remedies of an electric iron.
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Understand the working principle of electric heater.
- List different types of electric heater.
- List different parts of a room heater, surface heater and water heater.
- Explain the function of heat reflector and guard wire in a room heater.
- List the possible faults and their causes and remedies of an electric heater.
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Understand the working principle of 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.
- Sketch the electrical circuit diagram of a microwave oven.
- List the possible faults and their causes and remedies of a microwave oven.
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Understand the working principle of rice cooker.
- Describe the function of a rice cooker.
- List the main parts of a rice cooker.
- Explain the function of different parts of a rice cooker.
- List the possible faults and their causes and remedies of a rice cooker.
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Understand the working principle of Electric Toaster.
- List different types of Electric Toaster.
- List different Parts of Electric Toaster.
- Explain the function of different parts of Electric toaster.
- List the possible faults and their Causes and remedies of a electric toaster.
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Understand the features of Hair drier
- State Principle operation of Hair drier.
- List different parts of Hair drier.
- Explain the function of different parts of Hair drier.
- List the possible faults and their causes and remedies of a Hair drier.
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Understand the features of Electric Shaving machine (shaver)
- State principle operation of electric shaving machine.
- List different parts of shaving machine.
- Explain the function of different parts shaving marching.
- List the possible faults and their causes and remedies of a electric shaving machine.
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Understand the features of Electric Kettle.
- State Principle operation of Electric Kettle.
- List deferent parts of electric Kettle.
- Explain the function of different pants of electric Kettle.
- List the possible faults and their causes and remedies of a electric kettle.
- Understand the features of Geyser.
- List the different parts of Geyser.
- Explain the operation of Geyser.
- Discuss the safety precaution of Geyser.
- List of possible faults and causes and their remedies of a Geyser.
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Understand the working principle of table fan/pedestal fan.
- Describe the function of a table fan/pedestal fan.
- List different parts of a table fan/pedestal fan.
- Sketch the circuit diagram of a table fan/pedestal fan.
- Explain the oscillatory mechanism of a table fan/pedestal fan.
- List various components of an electronic fan regulator.
- Explain the operation of an electronic fan regulator.
- List the possible faults and their causes and remedies of a table fan/pedestal fan.
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Understand the features of a rechargeable (emergency) lamp.
- Explain the working principle of a rechargeable lamp.
- Name the different parts of a rechargeable lamp.
- Sketch the circuit diagram of a rechargeable lamp.
- Explain the principle of operation of a rechargeable DC fan.
- List the possible faults and their causes and remedies of a rechargeable lamp.
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Understand the features of a vacuum cleaner.
- Explain the working principle of a vacuum cleaner.
- Name the different parts of a vacuum cleaner.
- Sketch the circuit diagram of a vacuum cleaner.
- List the possible faults and their causes and remedies of a vacuum cleaner.
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Understand the features of an electric blower.
- Explain the working principle of an electric blower.
- Name the different parts of an electric blower.
- Sketch the circuit diagram of an electric blower.
- List the possible faults and their causes and remedies of a electric blower.
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Understand the features of a de-humidifier.
- Explain 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.
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Understand the features of a blender.
- Explain the principle of operation of a blender.
- List the different parts of a blender.
- Sketch the electric circuit of a blender.
- State the function of the timer in a blender.
- List the possible faults and their causes and remedies of a blender.
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Understand the features of a washing machine.
- Explain the 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.
- Explain complete washing cycle of a washing machine.
- List the possible troubles and their causes and remedies of a washing machine.
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Understand the features of a water pump.
- Explain the principle of operation of a water pump.
- State the specification of a water pump.
- List different parts with their function.
- Sketch the connection diagram of pump motor.
- Explain different types of motor starter used in water pump.
- List the possible troubles and their causes and remedies of a water pump.
- Sketch the circuit diagram of a water level controller.
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Understand the features of a refrigerator.
- Explain operating principle of a refrigerator.
- Sketch the refrigeration cycle.
- Draw the electrical circuit of a refrigerator.
- Explain the function of different components of refrigerator.
- List the possible faults and their causes and remedies of a refrigerator.
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Understand the features of an air conditioner.
- State the principle of operation of an air conditioner.
- List different parts of an air conditioner.
- Explain the function of filter, ducts and grills, air-conditioning circuit, control, cooling unit and electrical control unit.
- Draw the electrical circuit of an air conditioning unit.
- List the possible electrical faults and their causes and remedies of an air conditioner.
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Understand the features of a lift.
- Explain principle of operation of a lift.
- List the different components of a lift.
- Mention specification of a common type of lift.
- Describe the steps of installation of a lift.
- Explain the motor generally used in a lift and its control.
- List possible faults and their causes and remedies of a lift.
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Understand the features of an escalator.
- Explain principle of operation of an escalator.
- State the working principle of escalator.
- List the main parts of an escalator.
- Name the electric motor generally used in escalator.
- Describe the steps of installation of an escalator.
Practical :
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Perform maintenance and servicing an electric iron.
- Select the equipment and tools necessary for disassembling and servicing an electric iron.
- Disassemble the electric iron.
- Sketch the different parts of the electric iron.
- Observe the heating element and operation of thermostat in the electric iron.
- Diagnose the possible problems in the electric iron.
- Repair or replace the defective parts, if any.
- Reassemble the parts and connect the iron to the power source.
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Perform maintenance and servicing of different types of electric heaters.
- Disassemble the different parts of the electric heater.
- Sketch the main parts of the electric heater.
- Sketch the circuit diagram of a single throw and a double throw thermostatic control electric heater.
- Identify the possible troubles in a heater with causes and remedies.
- Repair or replace the defective parts of the heater, if any.
- Reassemble the parts of the heater.
- Connect the heater to service.
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Perform maintenance and servicing of a microwave oven.
- Disassemble the microwave oven.
- Sketch the main parts of the microwave oven.
- Make a visual study and test the different parts.
- Sketch the electrical circuit diagram of the microwave oven.
- List possible troubles with causes and remedies of a microwave oven.
- Assemble the parts and connect the oven to the power source.
- Observe the operation.
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Perform repair and maintenance of a rice cooker.
- Disassemble the parts of the rice cooker.
- Sketch the main parts of the rice cooker.
- Identify possible troubles with causes and remedies of a rice cooker.
- Assemble the parts of the rice cooker.
- Connect the cooker to the power source.
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Perform the operation and maintenance of a toaster
- Select the necessary tools for disable and assemble the components of a toaster.
- Sketch the diagram.
- Connect the toaster to the power source.
- Observe the operation.
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Perform the operation of a Geyser
- Select the necessary tools for disasscmble & assemble the components of Geyser
- Sketch the diagram
- Select the different ranges of Geyser.
- Connect the Geyser to the power source.
- Observe the operation.
- Perform the operation and maintenance of an Electric Kettle.
- Select the necessary hand tools for disassemble and assemble the electrical components of the electric kettle.
- Disassemble and assemble the electric kettle.
- Sketch the diagram.
- Connect into the power source.
- Observe the operation.
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Perform repair and maintenance of an oscillatory type fan.
- Disassemble the different parts of the table fan/pedestal fan.
- Observe the oscillatory mechanism of the oscillating type of fan.
- Sketch the different parts of the fan.
- Assemble the fan and connect to the power supply.
- Observe the operation.
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Perform repair and maintenance of a rechargeable (emergency) lamp.
- Disassemble the rechargeable (emergency) lamp.
- Sketch the different parts of the rechargeable lamp.
- Test the battery of the lamp.
- Check the parts to ensure its sound condition.
- Repair and replace the defective parts, if any.
- Reassemble the lamp and connect to the power source.
- Observe the charging and discharging condition.
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Perform repair and maintenance of an electric blower.
- Disassemble the parts of the electric blower.
- Sketch the main parts of the electric blower.
- Check the parts to ensure the sound condition.
- Repair or replace the defective parts, if any.
- Reassemble the parts.
- Connect the appliances to the power source.
- Observe the operation.
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Perform repair and maintenance of a vacuum cleaner.
- Disassemble the parts of the vacuum cleaner.
- Sketch the main parts of the vacuum cleaner.
- Check the parts to ensure the sound condition.
- Repair or replace the defective parts, if any.
- Reassemble the parts.
- Connect the appliances to the power source.
- Observe the operation.
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Study a dehumidifier.
- Disassemble the dehumidifier.
- Sketch the main parts of the dehumidifier.
- Identify the major troubles with remedies.
- Reassemble the parts.
- Connect the dehumidifier to the power supply.
- Observe the operation.
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Perform repair and maintenance of a blender.
- Disassemble the blender.
- Sketch the main parts.
- Identify the major faults generally occurred in a blender.
- Assemble the blender.
- Connect the blender to the power supply.
- Observe the operation.
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Perform repair and maintenance of a washing machine.
- Identify the main parts of the washing machine.
- Sketch the main parts of the washing machine.
- Sketch the electrical circuit of the washing machine.
- Draw the complete washing cycle of washing machine.
- Dissemble the major components.
- Make a visual observation.
- Reassemble the parts.
- Connect the washing machine to the power supply.
- Observe the operation.
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Perform repair and maintenance of a water pump.
- Disassemble the different parts of the water pump.
- Sketch the different parts of the pump and motor.
- Check the insulation resistance of the driving motor.
- Test the continuity and earthling of the driving motor.
- Assemble the pump.
- Observe the operation of pump and method of control against overflow from tank.
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Perform repair and maintenance of electrical components of a refrigerator.
- Identify the different parts of the refrigerator.
- Identify the electrical components of the refrigerator.
- Sketch the wiring circuit showing electrical control system.
- Note down the maintenance procedure of a refrigerator.
- Disassemble and assemble the thermostat control.
- Connect into the power source.
- Observe the operation.
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Perform repair and maintenance of electrical components of air-conditioner.
- List the main parts of the air-conditioner.
- Sketch the main section namely fan with motor, filter, ducts and grill, air conditioning control, cooling unit and electrical control unit.
- Sketch the wiring diagram.
- Disassemble and assemble the electrical components of the air conditioner.
- Connect the air conditioner to the power supply.
- Observe the operation.
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Perform operation and maintenance of a lift.
- Visit a nearby establishment where a lift is available.
- Note down the different specifications of the lift.
- Observe the operating principle of the lift.
- Sketch different components of the lift.
- Identify the possible troubles and their remedies.
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Perform operation and maintenance of an escalator.
- Visit a nearby establishment where an escalator is available.
- Note down the different specification of the escalator.
- Observe the operating principle.
- Sketch the different components of the escalator.
- Identify the possible troubles and their causes and remedies of an escalator generally occurred.
REFERENCE BOOK
- Home appliances Service Guide – Edwin P. Anderson.
- Study of electrical appliances and devices – K.B Bhatia
- Electrical home appliances service manual – S. K . Gupta, Gt publication
- Principle of Refrigeration – Dossat
