The time of closing the cycle, in modern circuit breakers is_____________?

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...

An efficient and a well designed protective relaying should have_____________?

A. good selectivity and reliability B. economy and simplicity C. high speed and selectivity 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...

Air blast circuit breakers for 400 kV power system are designed to operate in_______________?

A. 100 microsecond B. 50 millisecond C. 0.5 sec D. 0.1 sec...

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...