A. lower than that of if a fault occurs away from the relay
B. higher than that of if a fault occurs away from the relay
C. constant for all distances
D. none of the above
Answer with Explanation:
A. lower than that of if a fault occurs away from the relay
Explanation:
The relay will operate when the ratio V/I is less than a predetermined value.
More Circuit Breaker MCQS with Full Explanation
More Earthing MCQs with Full Explanation and Important Notes
1. The neutral of the power system may be connected to the earth
2. Grounding of substation provides
3. Earthing is necessary to give protection against
4. Standard wire gauge used for earthing lead should not be thinner than
5. What should be the value of earthing resistance for large power stations?
6. The earthing wire should have
7. The size of the earth wire is determined by
8. The minimum length of pipe electrode used for earthing should not be less than
10. Earth resistance in a typical domestic wiring is
11. From the point of view of safety, the resistance of the earthing electrode should be