Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Winding resistance Leakage reactance Iron losses Copper losses Winding resistance Leakage reactance Iron losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The approximate efficiency of a large transformer is 95% 65% 80% 50% 95% 65% 80% 50% ANSWER DOWNLOAD EXAMIANS APP
Transformers Leakage flux in a transformer occurs because Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal Air is not a good magnetic insulator Iron core has high permeability Transformer is not an efficient device Applied voltage is sinusoidal ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ None of the listed here Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency None of the listed here Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers Negative voltage regulation is indicative that the load is inductive or resistive inductive only None of these capacitive only inductive or resistive inductive only None of these capacitive only ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one less than one great than one None of these approximately equal to one less than one great than one None of these ANSWER DOWNLOAD EXAMIANS APP
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