Electrical Engineering : Switchgear Protections QUESTIONS AND ANSWERS :: part4 : 1 to 5
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.An isolator is installed |
| to operate the relay of circuit breaker |
| as a substitute for circuit breaker |
| always independent of the position of circuit breaker |
| generally on both sides of a circuit breaker |
2.Admittance relay is _______ relay. |
| impedance |
| directional |
| non-directional |
| none of the above |
3.On which of the following effects of electric current a fuse operates ? |
| Photoelectric effect |
| Electrostatic effect |
| Heating effect |
| Magnetic effect |
4.The steady state stability of the power system can be increased by |
| connecting lines in parallel |
| connecting lines in series |
| using machines of high impedance |
| reducing the excitation of machines |
5.The material used for fuse must have |
| low melting point and high specific resistance |
| low melting point and -low specific resistance |
| high melting point and low specific resistance |
| low melting point and any specific resistance |
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