The delay fuses are used for the protection of ___________?

Related Mcqs:

1. H.R.C. fuses provide best protection against________________?

   A. overload B. reverse current C. open-circuits D. short-circuits...

2. Protection by fuses is generally not used beyond__________?

   A. 20 A B. 50 A C. 100 A D. 200 A...

3. A thermal protection switch can protect against_____________?

   A. short-circuit B. temperature C. overload D. over voltage...

4. For the protection of power station buildings against direct strokes the requirements are___________?

   A. interception B. interception and conduction C. interception, conduction and dissipation D. interception, conduction, dissipation and reflection E. none of the above...

5. Which of the following is the least expensive protection for overcurrent is low voltage system ?

   A. Rewireable fuse B. Isolator C. Oil circuit breaker D. Air break circuit breaker E. None of the above...

6. The inverse definite mean time relays are used for over current and earth fault protection of transformer against_________________?

   A. heavy loads B. internal short-circuits C. external short-circuits D. all of the above...

7. The single phasing relays are used for the protection of_____________?

   A. single phase motors only B. two phase motors only C. two single phase motors running in parallel D. three phase motors...

8. Overfluxing protection is recommended for_____________?

   A. distribution transformer B. generator transformer of the power plant C. auto-transformer of the power plant D. station transformer of the power plant...

9. For which of the following ratings of the transformer differential protection is recommended ?

   A. above 30 kVA. B. equal to and above 5 MVA C. equal to and above 25 MVA D. none of the above...

10. A fuse in a motor circuit provides protection against__________?

    A. overload B. short-circuit and overload C. open circuit, short-circuit and overload D. none of the above...