Which one is the correct expression for Shield’s entrainment functi

1.	Which one is the correct expression for Shield’s entrainment function?
A.	Tc / Yw. d. (Gs – 1)
B.	Tc.Yw / d. (Gs – 1)
C.	Tc / Yw. d
D.	Tc .Yw. d / (Gs – 1)
Answer» B. Tc.Yw / d. (Gs – 1)

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Which one is the correct expression for Shield’s entrainment function?

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