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? 1470 rpm zero 30 rpm 1500 rpm 1470 rpm zero 30 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To eliminate 5th harmonic in the induced voltage phase breadth should be 72° 36° 30° 18° 72° 36° 30° 18° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a 3-phase, 4 pole, 50 Hz synchronous motor the frequency, pole number and the frequency are halved. The motor speed will be 3000 rpm 1500 rpm 75 rpm 375 rpm 3000 rpm 1500 rpm 75 rpm 375 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Motors for fans and pumps are selected in the rpm range 375 to 500. 500 to 720. 720 to 920. 1440 to 2880. 375 to 500. 500 to 720. 720 to 920. 1440 to 2880. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 30 volts. 20 volts. 10 volts. 40 volts. 30 volts. 20 volts. 10 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is none of these. magnetic field poles. armature. core. none of these. magnetic field poles. armature. core. ANSWER DOWNLOAD EXAMIANS APP
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