Electrical Machines The synchronous speed of an induction motor will be increased by decreasing of frequency. increasing of frequency. speed can not be increased. increasing number of poles. decreasing of frequency. increasing of frequency. speed can not be increased. increasing number of poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will remains same. none of these. increase. Decrease.d remains same. none of these. increase. Decrease.d ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their leakage reactance ratings per unit impedance efficiency leakage reactance ratings per unit impedance efficiency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High inrush of current during a starting of DC motor can efficiently be restricted to a safer value by increasing the _________________ resistance. armature circuit shunt field none of above both A and B armature circuit shunt field none of above both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loop represents the area of total iron losses hysteresis loss copper loss eddy current loss total iron losses hysteresis loss copper loss eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine is invariably provided with forced ventilation? Fractional horse power slow speed motor. 50 MW generator in a power plant. Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. Fractional horse power slow speed motor. 50 MW generator in a power plant. Fractional horse power high speed motor. Hermetically sealed motor of refrigerator. ANSWER DOWNLOAD EXAMIANS APP
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