Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 30° 10° 60° 45° 30° 10° 60° 45° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole, 50 Hz induction motor 4 % slip, calculate frequency of the rotor emf? 50 Hz. 3 Hz. 2 Hz. 10 Hz. 50 Hz. 3 Hz. 2 Hz. 10 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will happen if the the supply terminals are reversed in case of a DC shunt motor? The motor will run much faster in the same direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The motor will run in reverse direction. The motor will run much faster in the same direction. The motor will run at its normal speed in the same direction as before. The motor will stop. The motor will run in reverse direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is none. N12 : N22. N1 : N2. 1 : 1. none. N12 : N22. N1 : N2. 1 : 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous speed of an induction motor will be increased by increasing number of poles. speed can not be increased. decreasing of frequency. increasing of frequency. increasing number of poles. speed can not be increased. decreasing of frequency. increasing of frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will decrease increase None of these either increase or decrease decrease increase None of these either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
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