What do you understand by Rfo and Rfi? – McqOptions

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1.	What do you understand by R_fo and R_fi?
A.	Dirt factor and Fouling factor
B.	Inner Tube outer surface fouling factor and inner surface fouling factor
C.	Inner Tube outer surface fouling factor and inner surface fouling factor
D.	Inner Tube outer surface fouling factor and Annulus tube inner surface fouling factor
Answer» C. Inner Tube outer surface fouling factor and inner surface fouling factor

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