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Transformers

Transformers
An isolation transformer has primary to secondady turns ratio of

Can be any ratio
2:1
1:1
1:2

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Transformers
In a transformer, leakage flux

Is minimised by interleaving the primary and secondary windings
Helps in transfer of energy
Is negligible at full load
Produces mutually induced emf

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Transformers
A transformer is an efficient device because

A static device
Uses electric coupling
Uses inductive coupling
Uses capacitive coupling

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Transformers
Natural air cooling is generally restricted for transformers up to

5 MVA
50 MVA
15 MVA
1.5 MVA

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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?

4 kVA
16 kVA
0.25 kVA
8 kVA

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Transformers
The core type transformer is generally suitable for ______

High voltage and small output
High voltage and high output
Low voltage and high output
None of the listed here

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