Transformers Natural oil cooling is used for transformers upto a rating of 250 kVA 500 kVA 1000 kVA 3000 kVA 250 kVA 500 kVA 1000 kVA 3000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers Two things which are same for primary and secondary of transformer are ______ Resistance and leakage reactances Currents and induced voltages Ampere turns and voltage per turns None of the listed here Resistance and leakage reactances Currents and induced voltages Ampere turns and voltage per turns None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Potential transformer Step-up transformer Current transformer Auto transformer Potential transformer Step-up transformer Current transformer Auto transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Induction motor Shunt motor Air motor Synchronous motor Induction motor Shunt motor Air motor Synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 5.5 18 0.18 0.018 5.5 18 0.18 0.018 ANSWER DOWNLOAD EXAMIANS APP
Transformers In a transformer, leakage flux Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Is negligible at full load Produces mutually induced emf Is minimised by interleaving the primary and secondary windings Helps in transfer of energy Is negligible at full load ANSWER DOWNLOAD EXAMIANS APP
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