Interruption of large currents by relay requires______________?

Related Mcqs:

The main function of a fuse is to_____________?

A. protect the line B. open the circuit C. protect the appliance D. prevent excessive currents E. none of the above...

The relay operating speed depends upon_________________?

A. the spring tension B. the rate of flux built up C. armature core air gap D. all of the above...

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...

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...

The steady state stability of the power system can be increased by_____________?

A. connecting lines in parallel B. connecting lines in series E. using machines of high impedance D. reducing the excitation of machines E. none of the above...