DOMESTIC APPLIANCES - Practice Mode

1) What is the purpose of protection grooves at various places in a heater base plate?

Radiate the heat properly Retain the heating element firmly Place the vessels firmly on heater plate Protect the heating element from damage

Correct Answer: Retain the heating element firmly

2) What is the purpose of sole plate in electric kettle?

Acts as a balancing weight Acts as an insulator for element Protect the kettle base from damage Keep the element in close contact with container

Correct Answer: Keep the element in close contact with container

3) What is the magnetron tube filament voltage used in microwave oven?

1.5 V A.C 2.0 V A.C 3.0 V A.C 3.2 V A.C

Correct Answer: 3.2 V A.C

4) What is the fault in a food mixer if it runs intermittently?

Worn out brushes Armature coil open Defective commutator Field winding partially short

Correct Answer: Worn out brushes

5) What is the defect in a single phase pump motor if it runs with slow speed?

Defective capacitor Open starting winding Short in starting winding Short in running winding

Correct Answer: Defective capacitor

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