Transformers Natural oil cooling is used for transformers upto a rating of 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large secondary output is much less as compared to primary input iron loss is increased considerably copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large secondary output is much less as compared to primary input 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 When a 6 V battery is connected across the primary of a transformer with a turns ratio of 8, the secondary voltage is 6 V 48 V 0 V 0.75 V 6 V 48 V 0 V 0.75 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which motor is preferred for use in mines where explosive gases exist? Synchronous motor Air motor Induction motor Shunt motor Synchronous motor Air motor Induction motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a fitting on a transformer? Conservator Breather Buchholz's relay Commutator Conservator Breather Buchholz's relay Commutator ANSWER DOWNLOAD EXAMIANS APP
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