Transformers Transformer having ratings less than 5kVA are generally ______ Water cooled Oil cooled Natural air cooled None of the listed here Water cooled Oil cooled Natural air cooled None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers We can find _______of the transformer with open circuit test. Total equivalent leakage reactance Copper losses Turn ratio Total equivalent resistance Total equivalent leakage reactance Copper losses Turn ratio Total equivalent resistance ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is minimised by interleaving the primary and secondary windings Is negligible at full load Produces mutually induced emf Helps in transfer of energy Is minimised by interleaving the primary and secondary windings Is negligible at full load Produces mutually induced emf Helps in transfer of energy ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. Above 40% 15-30% 3-5% 30-40% Above 40% 15-30% 3-5% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Frequency Voltage Time period Power Frequency Voltage Time period Power ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 25 per cent 100 per cent 98 per cent 50 per cent 25 per cent 100 per cent 98 per cent 50 per cent ANSWER DOWNLOAD EXAMIANS APP
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