Transformers The main reason for generation of harmonics in a transformer could be fluctuating load poor insulation mechanical vibrations saturation of core fluctuating load poor insulation mechanical vibrations saturation of core ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine all-day efficiency None of these temperature stray losses all-day efficiency None of these temperature stray losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. Reduce core loss Increase the wight None of the listed here Provide tight magnetic coupling Reduce core loss Increase the wight None of the listed here Provide tight magnetic coupling ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following transformer is smallest? 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 500 Hz 2kVA, 50 Hz 2kVA, 400 Hz 2kVA, 200 Hz 2kVA, 500 Hz ANSWER DOWNLOAD EXAMIANS APP
Transformers The effect of leakage flux in a transformer is to ______ Cause voltage drop in the windings None of the listed here Increase copper losses Decreases copper losses Cause voltage drop in the windings None of the listed here Increase copper losses Decreases copper losses ANSWER DOWNLOAD EXAMIANS APP
Transformers The mutual inductance when k = 0.65, L1 = 2 H, and L2 = 5 H is 4 μH 2 mH 8 μH 2 μH 4 μH 2 mH 8 μH 2 μH ANSWER DOWNLOAD EXAMIANS APP
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