Electrical Engineering : Switchgear Protections QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.Directional relays are based on flow of |
| power |
| current |
| voltage wave |
| all of the above |
22.Arc in a circuit behaves as |
| a capackive reactance |
| an inductive reactance |
| a resistance increasing with voltage rise across the arc |
| a resistance decreasing with voltage rise across the arc |
23.Overload relays are of...... type. |
| induction |
| solid state |
| thermal & electromagnetic |
| all above |
24.With which of the following, a circuit breaker must be equipped for remote operation ? |
| Inverse time trip |
| Time-delay trip |
| Shunt trip |
| None of the above |
More Switchgear Protections QUESTIONS AND ANSWERS available in next pages
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