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Transformers
A transformer with a 110 V primary has a 15:1 turns ratio. The load resistance, RL, is 120 . What is the approximate voltage across the load?
73 V
880 V
7.3 V
88 V
73 V
880 V
7.3 V
88 V
Answer
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Related Question
Transformers
To step 110 V ac down to 20 V ac, the turns ratio must be
5.5
0.018
0.18
18
5.5
0.018
0.18
18
Answer
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Transformers
Which winding in a transformer has more number of turns?
Secondary winding
Primary winding
High voltage winding
Low voltage winding
Secondary winding
Primary winding
High voltage winding
Low voltage winding
Answer
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Transformers
The eddy current loss in a transformer is directly proportional to _______.
The flux density in the core
The supply frequency
Thickness of core lamination
Square of thickness of core lamination
The flux density in the core
The supply frequency
Thickness of core lamination
Square of thickness of core lamination
Answer
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Transformers
The amount of copper in the primary is _______that of secondary.
About the same as
Greater than
Smaller than
None of the listed here
About the same as
Greater than
Smaller than
None of the listed here
Answer
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Transformers
The primary winding of a transformer has 110 V ac across it. What is the secondary voltage if the turns ratio is 8?
880 V
88 V
8,800 V
8.8 V
880 V
88 V
8,800 V
8.8 V
Answer
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