Which of the following is correct (fm is maximum usable frequency, S i – McqOptions

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1.	Which of the following is correct (fm is maximum usable frequency, S is speed and G is width of air gap)?
A.	fm = (S) (2G)
B.	fm = S / 2G
C.	fm = S / G
D.	G = (fm)(S)
Answer» D. G = (fm)(S)

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