In an unloaded transformer, the flux limiting the primary is 10 mWb an – McqOptions

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1.	In an unloaded transformer, the flux limiting the primary is 10 mWb and secondary is 30 mWb. The coefficient of coupling is ____________
A.	1
B.	0.1
C.	0.33
D.	0.67
Answer» D. 0.67

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