Transformers When secondary of a current transformer is open-circuited its iron core will be hot because of heavy iron losses taking place in it due to high flux density none of above will happen hot because primary will carry heavy current cool as there is no secondary current hot because of heavy iron losses taking place in it due to high flux density none of above will happen hot because primary will carry heavy current cool as there is no secondary current ANSWER DOWNLOAD EXAMIANS APP
Transformers The turns ratio required to match an 80 source to a 320 load is 80 20 2 4 80 20 2 4 ANSWER DOWNLOAD EXAMIANS APP
Transformers A no-load test is performed on a transformer to determine magnetising current efficiency core loss copper loss magnetising current and loss magnetising current efficiency core loss copper loss magnetising current and loss ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer has 50 turns in the primary winding and 10 turns in the secondary winding, what is the reflective resistance if the secondary load resistance is 250 ? 62500 Ω 6250 Ω 25 Ω 250 Ω 62500 Ω 6250 Ω 25 Ω 250 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural oil cooling is used for transformers up to a rating of 1000 kVA 250 kVA 3000 kVA 500 kVA 1000 kVA 250 kVA 3000 kVA 500 kVA ANSWER DOWNLOAD EXAMIANS APP
Transformers The short circuit test helps us to find None of the listed here Cu loss at any desire load Iron loss at no load Cu loss at no load None of the listed here Cu loss at any desire load Iron loss at no load Cu loss at no load ANSWER DOWNLOAD EXAMIANS APP
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