Electrical Machines In DC generator on no-load, the air gap flux distribution in space is pulsating. sinusoidal. triangular. flat topped. pulsating. sinusoidal. triangular. flat topped. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V, 50 Hz, 4 pole single phase induction motor is rotating in the clockwise ( forward ) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8 Ω. Then the effective rotor resistance in the backward branch of the equivalent circuit will be 10 Ω. 2 Ω. 8 Ω. 4 Ω. 10 Ω. 2 Ω. 8 Ω. 4 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC motor with armature resistance of 0.5 ohms is connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is 340 A. 570 A. 460 A. 250 A. 340 A. 570 A. 460 A. 250 A. 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. I1 = KI2 + Iμ. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iw. I1 = KI2. I1 = KI2 + Iμ. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iw. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Newtons law. Amperes law. Faradays law of electromagnetic induction. Coulombs law. Newtons law. Amperes law. Faradays law of electromagnetic induction. Coulombs law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing of DC generator means increasing flux density by providing extra ampere-turns in field. None of these creation of residual magnetism by a DC source. neutralization of residual magnetism. increasing flux density by providing extra ampere-turns in field. None of these creation of residual magnetism by a DC source. neutralization of residual magnetism. ANSWER DOWNLOAD EXAMIANS APP
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