Magnetic circuit breaker has ___________ trip action

Related Mcqs:

SF6 gas______________?

A. is yellow in colour B. is lighter than air C. is nontoxic D. has pungent small E. none of the above...

A differential relay measures the vector difference between_________________?

A. two currents B. two voltages C. two or more similar electrical quantities D. none of the above...

The ground wire should not be smaller than No _________ copper

A. 2 B. 4 C. 6 D. 10...

Which of the following statements is incorrect ?

A. Lightning arrestors are used before the switchgear B. Shunt reactors are used as compensation reactors C. The peak short current is (1.8 xV2) times the A.C. component D. The MVA at fault is equal to base MVA divided by per unit equivalent fault reactance...

A balanced 3-phase system consists of_______________?

A. zero sequence currents only B. positive sequence currents only C. negative and zero sequence currents D. zero, negative and positive sequence currents...