Transformers An isolation transformer has primary to secondady turns ratio of 1:1 1:2 Can be any ratio 2:1 1:1 1:2 Can be any ratio 2:1 ANSWER DOWNLOAD EXAMIANS APP
Transformers A common method of colling a power transformer is Air blast cooling Any of the listed here Oil cooling Natural air cooling Air blast cooling Any of the listed here Oil cooling Natural air cooling ANSWER DOWNLOAD EXAMIANS APP
Transformers To step 110 V ac down to 20 V ac, the turns ratio must be 0.018 5.5 0.18 18 0.018 5.5 0.18 18 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 5 A 20 A 10 A 15 A 5 A 20 A 10 A 15 A ANSWER DOWNLOAD EXAMIANS APP
Transformers The no load ratio of a 50 Hz single phase transformer is 6000/250 V. The maximum flux in the core is 0.06 Wb. What is the number of primary turns? 210 900 450 350 210 900 450 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers In which of the following transformer part of primary winding also serves as the secondary winding? Step-up transformer Potential transformer Auto transformer Current transformer Step-up transformer Potential transformer Auto transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
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