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? 9.6 0.4 0.96 4 9.6 0.4 0.96 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers The power efficiency of a lightning transformer is always ______its all day efficiency. Higher than Equal to Less than None of the listed here Higher than Equal to Less than None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The steel used for transformer core has Low hysteresis loss High permeability High silicon content All of the listed here Low hysteresis loss High permeability High silicon content All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers If a power transformer is operated at very high frequencies, then ______ Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive Primary reactance is too much increased Primary will draw large power None of the listed here Core losses will be excessive ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Self induction Mutual induction Static induction Dynamic induction Self induction Mutual induction Static induction Dynamic induction ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is approximately equal to one great than one None of these less than one approximately equal to one great than one None of these less than one ANSWER DOWNLOAD EXAMIANS APP
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