Transformers A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is 1.7 V 0 V 1 V 0.85 V 1.7 V 0 V 1 V 0.85 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following protection is normally not provided on small distribution transformers? Buchholz relay Overcurrent protection All of these Overfluxing protection Buchholz relay Overcurrent protection All of these Overfluxing protection ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary? 4 9.6 0.4 0.96 4 9.6 0.4 0.96 ANSWER DOWNLOAD EXAMIANS APP
Transformers Which winding of the transformer has less cross-sectional area? High voltage winding Secondary winding Low voltage winding Primary winding High voltage winding Secondary winding Low voltage winding Primary winding 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 Ns s.N. (Ns-l)s (l-s)Ns Ns s.N. (Ns-l)s (l-s)Ns ANSWER DOWNLOAD EXAMIANS APP
Transformers Losses which occur in rotating electric machines and do not occur in trans formers are hysteresis and eddy current losses copper losses friction and windage losses magnetic losses hysteresis and eddy current losses copper losses friction and windage losses magnetic losses ANSWER DOWNLOAD EXAMIANS APP
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