Transformers Cores of large transformers are built upto nearly circular cross section in order to reduce Iron losses Copper loss Eddy current loss Leakage reactance Iron losses Copper loss Eddy current loss Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 15-30% Above 40% 30-40% 3-5% 15-30% Above 40% 30-40% 3-5% ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are friction and windage losses hysteresis and eddy current losses magnetic losses copper losses friction and windage losses hysteresis and eddy current losses magnetic losses copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Voltage transformer Power transformer Auto transformer Current transformer Voltage transformer Power transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is None of these great than one less than one approximately equal to one None of these great than one less than one approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
Transformers The highest voltage for transmitting electrical power in india is 400 kV 66 kV 132 kV 33 kV 400 kV 66 kV 132 kV 33 kV ANSWER DOWNLOAD EXAMIANS APP
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