Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. Find the speed of stator magnetic field with respect to rotor? 30 rpm 1500 rpm zero 1470 rpm 30 rpm 1500 rpm zero 1470 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, full form of MNA is what? Magnetic no-load axis. Magnetic neutral axis. Magnetic neutral armature co-ordinate. Magnetically no-load armature co-ordinate. Magnetic no-load axis. Magnetic neutral axis. Magnetic neutral armature co-ordinate. Magnetically no-load armature co-ordinate. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/√5 1/√2 1/3 2/√5 1/√5 1/√2 1/3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has hysteresis loss of 30 W, at 240 V, 60 Hz. The hysteresis loss at 200 V, 50 Hz will be 28 W. 30 W. 36 W. 25 W. 28 W. 30 W. 36 W. 25 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Considering a galvanometer is connected to the rotor of a 3 - Φ, 4 pole, 50 Hz IM and is making 130 oscillations in a minute, then calculate the rotor speed? 1440. 1435. 1450. 1500. 1440. 1435. 1450. 1500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct neither 1 nor 2 roller bearings → large machines ball bearings → small machines both A and B neither 1 nor 2 roller bearings → large machines ball bearings → small machines both A and B ANSWER DOWNLOAD EXAMIANS APP
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