Transformers In a transformer routine efficiency depends upon Power factor of load Both power factor and load current Load current Supply frequency Power factor of load Both power factor and load current Load current Supply frequency ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiencies of transformers compared with that of electric motors of the same power are about the same much higher much smaller somewhat smaller about the same much higher much smaller somewhat smaller ANSWER DOWNLOAD EXAMIANS APP
Transformers When secondary of a current transformer is open-circuited its iron core will be cool as there is no secondary current hot because primary will carry heavy current none of above will happen hot because of heavy iron losses taking place in it due to high flux density cool as there is no secondary current hot because primary will carry heavy current none of above will happen hot because of heavy iron losses taking place in it due to high flux density ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following is not a part of transformer installation? Exciter Breather Buchholz relay Conservator Exciter Breather Buchholz relay Conservator ANSWER DOWNLOAD EXAMIANS APP
Transformers What is the approximate efficiency of large transformers? 85% 65% 95 % 75% 85% 65% 95 % 75% ANSWER DOWNLOAD EXAMIANS APP
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