Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as V² V f² f V² V f² f ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1Ω. If the full load current is 20 A, the difference of induced voltage and generator is 20 V. 0 V. 40 V. 60 V. 20 V. 0 V. 40 V. 60 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC series generator, the terminal voltage with increase in load will decrease increase to rated voltage and then may decrease increase gradually and then stay at rated voltage remain nearly constant decrease increase to rated voltage and then may decrease increase gradually and then stay at rated voltage remain nearly constant ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 = I2 I1 > I2 None of these I1 < I2 I1 = I2 I1 > I2 None of these I1 < I2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate maximum power. maximum voltage. maximum current. no voltage. maximum power. maximum voltage. maximum current. no voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is field current control supply voltage control All of these armature circuit resistance control field current control supply voltage control All of these armature circuit resistance control ANSWER DOWNLOAD EXAMIANS APP
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