Transformers Sumpner's test is conducted on transformers to determine stray losses None of these temperature all-day efficiency stray losses None of these temperature all-day efficiency ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one None of these less than one approximately equal to one great than one None of these less than one approximately equal to one ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary windings are wound on the top of each other in order to reduce ______ Copper losses Iron losses Winding resistance Leakage reactance Copper losses Iron losses Winding resistance Leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Transformers The hum in a transformer is mainly attributed to mechanical vibrations load changes oil in the transformer magnetostriction mechanical vibrations load changes oil in the transformer magnetostriction ANSWER DOWNLOAD EXAMIANS APP
Transformers The iron core is used to ______of the transformer. None of the listed here Provide tight magnetic coupling Increase the wight Reduce core loss None of the listed here Provide tight magnetic coupling Increase the wight Reduce core loss ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer is an efficient device because it _______ Uses capacitive coupling Uses electric coupling Uses inductive coupling Is a static device Uses capacitive coupling Uses electric coupling Uses inductive coupling Is a static device ANSWER DOWNLOAD EXAMIANS APP
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