Transformers If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is 0 W 25 W 250 W 2.5 W 0 W 25 W 250 W 2.5 W 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? 450 900 210 350 450 900 210 350 ANSWER DOWNLOAD EXAMIANS APP
Transformers Power transformers are generally designed to have maximum efficiency around no-load half-load near full-load 10% overload no-load half-load near full-load 10% overload ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has a 1:6 turns ratio and a secondary coil load resistance of 470 . The load resistance as seen by the source is 7.8 Ω 13 Ω 1.3 Ω 78 Ω 7.8 Ω 13 Ω 1.3 Ω 78 Ω ANSWER DOWNLOAD EXAMIANS APP
Transformers Natural air cooling is generally restricted for transformers up to 1.5 MVA 15 MVA 5 MVA 50 MVA 1.5 MVA 15 MVA 5 MVA 50 MVA ANSWER DOWNLOAD EXAMIANS APP
Transformers A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____. 400 W 100 W None of the listed here 200 W 400 W 100 W None of the listed here 200 W ANSWER DOWNLOAD EXAMIANS APP
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