The forced oil and air circulation method is usual one for transforme

1.	The forced oil and air circulation method is usual one for transformers of capacities
A.	upto 5 MVA
B.	upto 10 MVA
C.	upto 20 MVA
D.	30 MVA upwards
Answer» E.

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The forced oil and air circulation method is usual one for transformers of capacities

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