Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are three two six one three two six one ANSWER DOWNLOAD EXAMIANS APP
Power Systems The arc voltage produced in an AC circuit breaker is always lagging the arc current by 90°. leading the arc current by 90°. in phase with the arc current. in phase opposition with the arc current. lagging the arc current by 90°. leading the arc current by 90°. in phase with the arc current. in phase opposition with the arc current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of per unit system is/are It has units for all quantities Need of transformation ratio No units for any quantity All of these It has units for all quantities Need of transformation ratio No units for any quantity All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which cooling is preferred for large turbine generator Nitrogen cooling. Oxygen cooling. Hydrogen cooling. None of these. Nitrogen cooling. Oxygen cooling. Hydrogen cooling. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 layer and diameter of each strand is d, then find the total diameter of ACSR conductor? d 3d 5d 2d d 3d 5d 2d ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 20 kV 83.76 kV 48.36 kV 52.84 kV 20 kV 83.76 kV 48.36 kV 52.84 kV ANSWER DOWNLOAD EXAMIANS APP
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