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Transformers
What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV?
16 kVA
0.25 kVA
4 kVA
8 kVA
16 kVA
0.25 kVA
4 kVA
8 kVA
Answer
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Related Question
Transformers
The steel used for transformer core has
High permeability
All of the listed here
Low hysteresis loss
High silicon content
High permeability
All of the listed here
Low hysteresis loss
High silicon content
Answer
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Transformers
Short circuit test of a transformer helps us to find its
Cu loss at no load
None of the listed here
Full load cu loss
Iron loss
Cu loss at no load
None of the listed here
Full load cu loss
Iron loss
Answer
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Transformers
A transformer will work on
Ac only
None of the listed here
Dc only
AC as well as DC
Ac only
None of the listed here
Dc only
AC as well as DC
Answer
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Transformers
The permissible flux density in case of cold rolled grain oriented steel is around
1.7 Wb/m²
2.7 Wb/m²
4.7 Wb/m²
3.7 Wb/m²
1.7 Wb/m²
2.7 Wb/m²
4.7 Wb/m²
3.7 Wb/m²
Answer
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Transformers
What is the approximate efficiency of large transformers?
65%
75%
85%
95 %
65%
75%
85%
95 %
Answer
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