Transformers The no load primary current is about ______of full load primary current. 15-30% 3-5% Above 40% 30-40% 15-30% 3-5% Above 40% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer having ratings less than 5kVA are generally ______ Water cooled Natural air cooled Oil cooled None of the listed here Water cooled Natural air cooled Oil cooled None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has 200 W as iron loss at full load. The iron loss at full load. The iron loss at half full load will be 200 W 400 W 50 W 100 W 200 W 400 W 50 W 100 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Copper loss is equal to constant loss Resistance of the two winding are equal Leakage reactance of the two winding None of the listed here Copper loss is equal to constant loss Resistance of the two winding are equal Leakage reactance of the two winding None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers By laminating the core of a transformer, we decrease _____ Eddy current loss Copper loss Leakage reactance Hysteresis loss Eddy current loss Copper loss Leakage reactance Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers upto a rating of 500 kVA 3000 kVA 1000 kVA 250 kVA 500 kVA 3000 kVA 1000 kVA 250 kVA ANSWER DOWNLOAD EXAMIANS APP
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