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1) describe the construction and principle of the operation of an induction type directional over current relay

2) Specify the several kinds of the electromagnetic relays? Also describe their field of Applications.

3) Sketch and describe the balanced earth fault protection scheme of Generators.

4) describe the Merz-price circulation current scheme of protection used for the power transformers.

5) Describe about the high resistance Arc interruption methods in brief.

6) Describe the resistance switching in the circuit breaker.

7) Describe the working principle of an axial air blast type circuit breaker with the help of neat diagram.

8) describe the recovery rate theory and energy balance theory of the arc interruption within the Circuit breaker.

9) Sketch the schematic diagram of the interface for impedance relay and describe in detail.

10) Develop the flow chart of the microprocessor based over current relay.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M913208

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