Transformers Noise level test in a transformer is a type test None of these special test routine test type test None of these special test routine test ANSWER DOWNLOAD EXAMIANS APP
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 0 V 0.85 V 1 V 1.7 V 0 V 0.85 V 1 V 1.7 V ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load primary current is about ______of full load primary current. 30-40% Above 40% 15-30% 3-5% 30-40% Above 40% 15-30% 3-5% ANSWER DOWNLOAD EXAMIANS APP
Transformers A shell-type transformer has high eddy current losses None of these reduced magnetic leakage negligibly hysteresis losses high eddy current losses None of these reduced magnetic leakage negligibly hysteresis losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The secondary of a current transformer is always short-circuited under operating conditions because it protects the primary circuit avoids core saturation and high voltage induction None of these is safe to human beings protects the primary circuit avoids core saturation and high voltage induction None of these is safe to human beings 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
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