A) copper losses will be less B) eddy current losses will be more C) hysteresis losses will be more D) none of the above. Ans : (B)
A) 5 : 1 B) 10 : 1 C) 50 : 1 D) 2500 : 1. Ans : (C)
A) back to back test B) open circuit test C) short circuit test D) any of the above. Ans : (A)
A) Ratio of equivalent resistance and equivalent reactance should be the same B) Turn ratio should be the same C) Percentage impedance should be the same D) All of the above. Ans : (D)
A) one of the transformers will be always fully loaded B) one of the transformers is likely to get burnt C) load sharing of the transformers will not be proportional to kVA ratings D) power factor of both the transformer will be lagging. Ans : (C)
A) copper losses B) total equivalent resistances C) turns ratio D) total equivalent leakage reactance. Ans : (C)
A) magnetic interference with protective relays B) increased core loss C) increased I2R loss D) all of the above. Ans : (A)
A) Over load B) Core saturation C) Poor insulation D) Loose connections. Ans : (B)
A) primary windings B) secondary windings C) both primary and secondary windings D) none of the above. Ans : (A)
A) rated current B) rated voltage C) rated power D) rated impedance. Ans : (B)