(a) What is an electric motor? Write the principle on which its working is based.
) What is short circuit? Give its possible cause.
Answers
- Answer:
- An electric motor is an electrical machine that converts electrical energy into mechanical energy.
The 'electric motor' works on the principle that when a current carrying conductor is placed in a 'magnetic field' which is free to move, it experience a force.
- A short circuit is when there is a low resistance connection between two conductors that are supplying electrical power to a circuit
Old or damaged insulation may allow neutral and hot wires to touch, which can cause a short circuit. Or, if animal pests such as mice, rats, or squirrels gnaw on circuit wiring, the inner wire conductors can be exposed to cause short circuits.
Answer:
(a) Electric motor is a device which converts electrical energy into mechanical energy.
It works on the principle of conversation of electrical energy into mechanical energy.
(b) Short circuit is the caused by the contact of live wire with neutral wire. This increases the amount of current spontaneously.
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