Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one great than one less than one None of these approximately equal to one great than one less than one None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers An ideal transformer is one which _______ None of the listed here Has same number of primary and secondary turns Does not work Has no losses and leakage reactance None of the listed here Has same number of primary and secondary turns Does not work Has no losses and leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The dielectric strength of transformer oil is expected to be 330 kV 100 kV lkV 33 kV 330 kV 100 kV lkV 33 kV ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because Uses capacitive coupling Uses inductive coupling A static device Uses electric coupling Uses capacitive coupling Uses inductive coupling A static device Uses electric coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum load that a power transformer can carry is limited by its temperature rise voltage ratio dielectric strength of oil copper loss temperature rise voltage ratio dielectric strength of oil copper loss ANSWER DOWNLOAD EXAMIANS APP
Transformers The eddy current loss in a transformer is directly proportional to _______. Square of thickness of core lamination The supply frequency Thickness of core lamination The flux density in the core Square of thickness of core lamination The supply frequency Thickness of core lamination The flux density in the core ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS