Transformers The short circuit test helps us to find Cu loss at any desire load Cu loss at no load None of the listed here Iron loss at no load Cu loss at any desire load Cu loss at no load None of the listed here Iron loss at no load ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual flux in a transformer remains constant at all loads because ______ Losses are small Applied voltage and frequency are constant Iron core is used Leakage flux is small Losses are small Applied voltage and frequency are constant Iron core is used Leakage flux is small ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Decreases copper losses Increase copper losses None of the listed here Cause voltage drop in the windings Decreases copper losses Increase copper losses None of the listed here Cause voltage drop in the windings 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? 9.6 0.96 0.4 4 9.6 0.96 0.4 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers The output current corresponding to the maximum efficiency for a transformer having core loss of 200 W and equivalent resistance referred to secondary of 0.5 Ω is 5 A 20 A 10 A 15 A 5 A 20 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of None of these 15 A less than 15 A more than 15 A None of these 15 A less than 15 A more than 15 A ANSWER DOWNLOAD EXAMIANS APP
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