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 zero 1500 rpm 1470 rpm 30 rpm zero 1500 rpm 1470 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Larger values of air flux density is taken while designing IM for larger bore diameter. larger output. none. both. larger bore diameter. larger output. none. both. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fufuraldehyde analysis is done to determine the condition of paper insulation in transformer. condition of lamination on CRGO steel sheet. condition of cork gaskets used in transformer. condition of oil in transformer. condition of paper insulation in transformer. condition of lamination on CRGO steel sheet. condition of cork gaskets used in transformer. condition of oil in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their turn- ratios are exactly equal polarities are properly connected percentage impedances are equal KVA ratings are equal turn- ratios are exactly equal polarities are properly connected percentage impedances are equal KVA ratings are equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator on no-load, the air gap flux distribution in space is triangular. sinusoidal. flat topped. pulsating. triangular. sinusoidal. flat topped. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt = Ea + Ia(ra + rs) Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt= Ea + Iara Vt = Ea + Ia(ra + rs) Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt= Ea + Iara ANSWER DOWNLOAD EXAMIANS APP
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