A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of – McqOptions

MCQOPTIONS

1.	A 400 V, 10 KVA transformer at 50 Hz, is operated at the frequency of 40 Hz, then the humming ___________
A.	increases
B.	decreases
C.	remains same
D.	increases to very high
Answer» B. decreases

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