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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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Related Question
Transformers
A transformer will have zero efficiency at
No load
Half full load
Full load
None of the listed here
No load
Half full load
Full load
None of the listed here
Answer
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Transformers
Sumpner's test is conducted on transformer to determine
None of the listed here
All day efficiency
Temperature
Stray losses
None of the listed here
All day efficiency
Temperature
Stray losses
Answer
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Transformers
An ideal transformer is one which has
core of stainless steel and winding of pure copper metal
interleaved primary and secondary windings
a common core for its primary and secondary windings
no losses and magnetic leakage
core of stainless steel and winding of pure copper metal
interleaved primary and secondary windings
a common core for its primary and secondary windings
no losses and magnetic leakage
Answer
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Transformers
Which winding of the transformer has less cross-sectional area?
Low voltage winding
High voltage winding
Secondary winding
Primary winding
Low voltage winding
High voltage winding
Secondary winding
Primary winding
Answer
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Transformers
Natural oil cooling is used for transformers up to a rating of
3000 kVA
250 kVA
500 kVA
1000 kVA
3000 kVA
250 kVA
500 kVA
1000 kVA
Answer
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