Electrical Machine MCQ – Transformer #5

Electrical Machine MCQ - Transformer #5

Electrical Machine MCQ – Transformer #5 (#66 to #75)

Transformer MCQ #5

66) If transformer frequency is increased with constant supply voltage then hysteresis loss will be?
67) If transformer frequency is increased with constant supply voltage then eddy current loss will be?
68) As per no-load phasor diagram of an Ideal transformer the induced emf of primary and secondary winding is how much degree lag to main flux?
69) According to which law the secondary flux opposes of main flux?
70) A single-phase transformer has 180 and 90 turns respectively in its secondary and primary winding. The respective resistances are 0.233 Ω and 0.067 Ω. Calculate equivalent resistance of primary referred to secondary.
71) Which of the following power factor is occurs at maximum voltage regulation?
72) Which of the following loss (es) are core loss?
73) Which of the following power factor is occurs at zero voltage regulation?
74) Which of the following test is used to determine Iron loss in the transformer?
75) Which of the following test is used to determine winding loss in the transformer?
Electrical Machine MCQ - Transformer #5
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