Transformers Transformer having ratings less than 5kVA are generally ______ Oil cooled Natural air cooled Water cooled None of the listed here Oil cooled Natural air cooled Water cooled None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine hysteresis losses core losses copper losses eddy current losses hysteresis losses core losses copper losses eddy current losses ANSWER DOWNLOAD EXAMIANS APP
Transformers In a certain loaded transformer, the secondary voltage is one-fourth the primary voltage. The secondary current is equal to the primary current one-fourth the primary current one-fourth the primary current and equal to the primary current four times the primary current equal to the primary current one-fourth the primary current one-fourth the primary current and equal to the primary current four times the primary current ANSWER DOWNLOAD EXAMIANS APP
Transformers The temperature rise of transformer is directly proportional to _______ Apparent power Reactive power None of the listed here Leakage reactance Apparent power Reactive power None of the listed here Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Is minimised by interleaving the primary and secondary windings Is negligible at full load Helps in transfer of energy Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Is negligible at full load Helps in transfer of energy Produces mutually induced emf ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of None of these more than 15 A less than 15 A 15 A None of these more than 15 A less than 15 A 15 A ANSWER DOWNLOAD EXAMIANS APP
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