A 50 Hz transformer having equal hysteresis and eddy current losses at rated excitation is operated at 45 Hz at 90% of its rated voltage compared to rated operating point, the core losses under this condition will be

A 50 Hz transformer having equal hysteresis and eddy current losses at

1.	A 50 Hz transformer having equal hysteresis and eddy current losses at rated excitation is operated at 45 Hz at 90% of its rated voltage compared to rated operating point, the core losses under this condition will be
A.	reduce by 10%
B.	reduce by 19%
C.	reduce by 14.5%
D.	remain unchanged
Answer» D. remain unchanged

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A 50 Hz transformer having equal hysteresis and eddy current losses at rated excitation is operated at 45 Hz at 90% of its rated voltage compared to rated operating point, the core losses under this condition will be

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