Electrical Machines In DC machine torque depends on which of the following? flux (φ) speed armature current (I) both A and B flux (φ) speed armature current (I) both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be 25 kW. 26.21 kW. 24.11 kW. 23.06 kW. 25 kW. 26.21 kW. 24.11 kW. 23.06 kW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction motor None of these an induction generator a synchronous motor an induction motor None of these an induction generator a synchronous motor 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. Series shunt. Cummulative compound. Differentical compound. have an equal number of electrons and protons. Series shunt. Cummulative compound. Differentical compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of electromagnetic induction. self or mutual induction. self induction. mutual induction. electromagnetic induction. self or mutual induction. self induction. mutual induction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iμ. I1 = KI2 + Iw. I1 = KI2. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iμ. I1 = KI2 + Iw. I1 = KI2. ANSWER DOWNLOAD EXAMIANS APP
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