A. 1.5 sec
B. 5 to 10 sec
C. 5 to 20 sec
D. 20 to 30 sec
E. none of the above
A. low currents circuits
B. low voltages circuits
C. high voltages and large currents circuits
D. all circuits
A. inrush protection
B. distance protection
C. time graded and current graded over current protection
D. both (B) and (C)
E. none of the above
A. generators
B. busbars
C. transformers
D. motors
E. all of the above
A. split-phase relays
B. reactance relays
C. impedance relays
D. none of the above
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
A. fault occurs on the bus itself
B. fault occurs on neutral line
C. two or more faults occur simultaneously
D. fault occurs with respect to earthing