Transformers A transformer transfers electrical energy from primary to secondary usually with a change in ______ Power Time period Frequency Voltage Power Time period Frequency Voltage ANSWER DOWNLOAD EXAMIANS APP
Transformers Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is great than one less than one approximately equal to one None of these great than one less than one approximately equal to one None of these ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Air blast cooling Oil cooling Natural air cooling Any of the listed here Air blast cooling Oil cooling Natural air cooling Any of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiencies of transformers compared with that of electric motors of the same power are much smaller much higher somewhat smaller about the same much smaller much higher somewhat smaller about the same ANSWER DOWNLOAD EXAMIANS APP
Transformers The maximum flux produced in the core of a transformer is ______ Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency None of the listed here Directly proportional to supply frequency Inversely proportional to primary voltage Inversely proportional to supply frequency None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Transformers The principle of working of transformer is Self induction Static induction Dynamic induction Mutual induction Self induction Static induction Dynamic induction Mutual induction ANSWER DOWNLOAD EXAMIANS APP
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