Electrical Machines The shaft of induction motor may be unbalanced due to overheating of winding. overload. poor lubrication. uneven air gap. overheating of winding. overload. poor lubrication. uneven air gap. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor the torque is proportional to 1/P Power P 1/P² P² 1/P Power P 1/P² P² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If in a sub – station there is one 132 / 33 kV transformer whose secondary is connected with primary of one 33 / 11 kV transformer, the total transformation ratio of the sub – station will be, 7. 3. 12. 4. 7. 3. 12. 4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On switching a DC motor to DC supply mains, it is found to rotate in the direction opposite to that for which it is designed. The DC motor is have an equal number of electrons and protons. Cummulative compound. Series shunt. Differentical compound. have an equal number of electrons and protons. Cummulative compound. Series shunt. Differentical compound. 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 None of these I1 = I2 I1 > I2 I1 < I2 None of these I1 = I2 I1 > I2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Type of single phase motor having highest power factor at full load is capacitor run. split phase. capacitor start. shaded pole type. capacitor run. split phase. capacitor start. shaded pole type. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS