Transformers Which of the following transformer is smallest? 2kVA, 200 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 400 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. Provide tight magnetic coupling None of the listed here Reduce core loss Increase the wight Provide tight magnetic coupling None of the listed here Reduce core loss Increase the wight ANSWER DOWNLOAD EXAMIANS APP
Transformers The amount of copper in the primary is _______that of secondary. About the same as None of the listed here Smaller than Greater than About the same as None of the listed here Smaller than Greater than 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 10 A 15 A 5 A 20 A 10 A 15 A 5 A 20 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Auto transformer Voltage transformer Current transformer Power transformer Auto transformer Voltage transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage? 20 V 180 V 18 V 2 V 20 V 180 V 18 V 2 V ANSWER DOWNLOAD EXAMIANS APP
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