For a single phase, 50 Hz transformer, if the open circuit test is conducted at 40 Hz. What is the variation in the no-load power factor of the transformer?

For a single phase, 50 Hz transformer, if the open circuit test is con

1.	For a single phase, 50 Hz transformer, if the open circuit test is conducted at 40 Hz. What is the variation in the no-load power factor of the transformer?
A.	Decreases
B.	Increases
C.	Remains constant
D.	None of the mentioned
Answer» B. Increases

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For a single phase, 50 Hz transformer, if the open circuit test is conducted at 40 Hz. What is the variation in the no-load power factor of the transformer?

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