Transformers How many primary volts must be applied to a transformer with a turns ratio of 0.1 to obtain a secondary voltage of 9 V? 90 V 0.9 V 900 V 9 V 90 V 0.9 V 900 V 9 V 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? 0.96 4 0.4 9.6 0.96 4 0.4 9.6 ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer does not posses ______changing property. Impedance Voltage Current Power Impedance Voltage Current Power ANSWER DOWNLOAD EXAMIANS APP
Transformers Efficiency of a power transformer is of the order of 25 per cent 50 per cent 98 per cent 100 per cent 25 per cent 50 per cent 98 per cent 100 per cent ANSWER DOWNLOAD EXAMIANS APP
Transformers When the turns ratio of a transformer is 20 and the primary ac voltage is 12 V, the secondary voltage is 12 V 2,400 V 240 V 120 V 12 V 2,400 V 240 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer oil must be free from Odour Gases Moisture Sludge Odour Gases Moisture Sludge ANSWER DOWNLOAD EXAMIANS APP
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