Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 13 Ω 1.3 Ω 78 Ω 7.8 Ω 13 Ω 1.3 Ω 78 Ω 7.8 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. None of the listed here 100 W 200 W 400 W None of the listed here 100 W 200 W 400 W ANSWER DOWNLOAD EXAMIANS APP
Transformers The open circuit test on a transformer gives _______ Total losses Copper losses Friction losses Iron losses Total losses Copper losses Friction losses Iron losses ANSWER DOWNLOAD EXAMIANS APP
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 9 V 900 V 90 V 0.9 V 9 V 900 V ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers upto a rating of 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers Burden of a current transformer is usually expressed in Kilowatt Volts Amperes Volt amperes Kilowatt Volts Amperes Volt amperes ANSWER DOWNLOAD EXAMIANS APP
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