Transformers The principle of working of transformer is Mutual induction Self induction Static induction Dynamic induction Mutual induction Self induction Static induction Dynamic induction ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer, under heavy loads, is comparatively low because copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large iron loss is increased considerably secondary output is much less as compared to primary input copper loss becomes high in proportion to the output voltage drop both in primary and secondary becomes large iron loss is increased considerably secondary output is much less as compared to primary input 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? 900 350 210 450 900 350 210 450 ANSWER DOWNLOAD EXAMIANS APP
Transformers Which of the following property is not necessarily desirable in the material for transformer core? Low hysteresis loss High thermal conductivity High permeability Mechanical strength Low hysteresis loss High thermal conductivity High permeability Mechanical strength ANSWER DOWNLOAD EXAMIANS APP
Transformers The primary and secondary of a transformer are ______ coupled. Electrically Magnetically None of the listed here Electrically and magnetically Electrically Magnetically None of the listed here Electrically and magnetically ANSWER DOWNLOAD EXAMIANS APP
Transformers Sumpner's test is conducted on transformers to determine stray losses None of these all-day efficiency temperature stray losses None of these all-day efficiency temperature ANSWER DOWNLOAD EXAMIANS APP
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