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# lesson on Reactive power for Gate students

Surendar Reddy
15/09/2018 0 0

1. What is reactive power?

a) Reactive power is useful for machines to establish their working flux

example: induction motors require reactive power to establish a rotating magnetic field(working flux).

2) What are sources of reactive power?

a) 1. Synchronous alternator working with Lagging power factor or overexcited synchronous alternator

2. Synchronous motor working with leading power factor or overexcited synchronous motor

3. Capacitor banks

4. Underground cables

3) What are sinks of reactive power?

1.Induction motors/generators

2. Inductors

4. Synchronous alternator working with Leading power or underexcited synchronous alternator

5. Synchronous motor working with lagging power factor or under excited synchronous motor

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