MGVCL Exam Paper (30-07-2021 Shift 1) An electric potential field is produced in air by point 1 μC and 4 μC located at (-2, 1, 5) and (1, 3, -1) respectively. The energy stored in the field is 12.50 mJ 5.14 mJ 2.57 mJ 10.28 mJ 12.50 mJ 5.14 mJ 2.57 mJ 10.28 mJ ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) The miniature circuit breaker (MCB) shown in figure is four pole MCB five pole MCB two pole MCB three pole MCB four pole MCB five pole MCB two pole MCB three pole MCB ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) An alternator is supplying load of 300 kW at a power factor of 0.5 lagging. If the power factor is raised to unity, how many more kilowatts can alternator supply for the same kVA loading? 450 kW 150 kW 300 kW 600 kW 450 kW 150 kW 300 kW 600 kW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP P = S*cosφS = P/cosφS = 300/0.5S = 600 kVAFor same kVA rating and unity power factor,P = 600*1P = 600 kWPextra = 600 - 300Pextra = 300 kW
MGVCL Exam Paper (30-07-2021 Shift 1) If a 415 V, 50 Hz, star-connected, three-phase squirrel-cage induction motor is operated from a 415 V, 70 Hz supply, the torque that the motor can now provide while drawing rated current from the supply increases or reduces depending upon the rotor resistance reduces increases remains the same increases or reduces depending upon the rotor resistance reduces increases remains the same ANSWER DOWNLOAD EXAMIANS APP
MGVCL Exam Paper (30-07-2021 Shift 1) The operating time of an inverse definite minimum time (IDMT) overcurrent relay corresponding to plug-setting multiplier (PSM) = 1 and time-multiplier setting (TMS) = 1 will be 3 sec infinite zero 1 sec 3 sec infinite zero 1 sec ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equation of operating time for IDMT relay (t) = 0.14*TMS/[(PSM^0.02) - 1]Here,PSM = TMS = 1So,t = 0.14*1/(1 - 1)t = infinite
MGVCL Exam Paper (30-07-2021 Shift 1) Recently, Dr. Subir Vithal Gokarn passed away due to illness. He is a/an ___ Former Finance Minister Former RBI Deputy Governor Former IAS Officer Former Chief Minister of Gujarat Former Finance Minister Former RBI Deputy Governor Former IAS Officer Former Chief Minister of Gujarat ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS