Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 350 900 450 210 350 900 450 210 ANSWER DOWNLOAD EXAMIANS APP
Transformers In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be (l-s)Ns Ns s.N. (Ns-l)s (l-s)Ns Ns s.N. (Ns-l)s ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiencies of transformers compared with that of electric motors of the same power are much smaller about the same much higher somewhat smaller much smaller about the same much higher somewhat smaller ANSWER DOWNLOAD EXAMIANS APP
Transformers Short circuit test on transformers is conducted to determine hysteresis losses eddy current losses copper losses core losses hysteresis losses eddy current losses copper losses core losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Equal to Less than None of the listed here Higher than Equal to Less than None of the listed here Higher than 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 100 W 50 W 400 W 200 W 100 W 50 W 400 W 200 W ANSWER DOWNLOAD EXAMIANS APP
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