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Transformers
The amount of copper in the primary is _______that of secondary.
None of the listed here
Greater than
Smaller than
About the same as
None of the listed here
Greater than
Smaller than
About the same as
Answer
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Related Question
Transformers
Which of the following property is not necessarily desirable in the material for transformer core?
High permeability
Mechanical strength
Low hysteresis loss
High thermal conductivity
High permeability
Mechanical strength
Low hysteresis loss
High thermal conductivity
Answer
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Transformers
A transformer has full load copper loss of 400 W. The copper loss at half full load will be _____.
100 W
400 W
None of the listed here
200 W
100 W
400 W
None of the listed here
200 W
Answer
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Transformers
In a power or distribution transformer about 10 per cent end turns are heavily insulated
to reflect the line surge and save the winding of a transformer from damage
to absorb the line surge voltage and save the winding of transformer from damage
to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns
None of these
to reflect the line surge and save the winding of a transformer from damage
to absorb the line surge voltage and save the winding of transformer from damage
to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns
None of these
Answer
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Transformers
What is the coefficient of coupling for a transformer in which 4% of the total flux generated in the primary does not pass through the secondary?
4
9.6
0.4
0.96
4
9.6
0.4
0.96
Answer
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Transformers
The eddy current loss in a transformer is directly proportional to _______.
The flux density in the core
Square of thickness of core lamination
Thickness of core lamination
The supply frequency
The flux density in the core
Square of thickness of core lamination
Thickness of core lamination
The supply frequency
Answer
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