Electrical Machines Which of the following is minimized by laminating the core of a transformer? Eddy current loss. Copper loss. Hysteresis loss. Stray loss. Eddy current loss. Copper loss. Hysteresis loss. Stray loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Bl2v. Blv2. Bl2v2. Blv. Bl2v. Blv2. Bl2v2. Blv. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the armature electric current is increased to double its previous value, and the time of commutation is halved, how will the reactance voltage vary? It will becomes four times. It will remain the same. It will be doubled. It will be halved. It will becomes four times. It will remain the same. It will be doubled. It will be halved. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loop represents the area of eddy current loss copper loss hysteresis loss total iron losses eddy current loss copper loss hysteresis loss total iron losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? None of these constant loss both A and B variable loss None of these constant loss both A and B variable loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 < I2 I1 = I2 None of these I1 > I2 I1 < I2 I1 = I2 None of these I1 > I2 ANSWER DOWNLOAD EXAMIANS APP
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