Which of the following expressions represent the correct formula for calculating the blade efficiency?

\(\frac{2(C_{w1}+C_{w2})}{C_1}\)

\(\frac{(C_{w1}+C_{w2})*C_bl}{C_1^2}\)

\(\frac{2(C_{w1}+C_{w2})*C_bl)}{C_2^2}\)

\(\frac{2(C_{w1}+C_{w2})*C_bl)}{C_1^2}\)

\(\frac{2(C_{w1}+C_{w2})}{C_1}\)

Which of the following expressions represent the correct formula for

1.	Which of the following expressions represent the correct formula for calculating the blade efficiency?
A.	\(\frac{(C_{w1}+C_{w2})*C_bl}{C_1^2}\)
B.	\(\frac{2(C_{w1}+C_{w2})*C_bl)}{C_2^2}\)
C.	\(\frac{2(C_{w1}+C_{w2})*C_bl)}{C_1^2}\)
D.	\(\frac{2(C_{w1}+C_{w2})}{C_1}\)
Answer» D. \(\frac{2(C_{w1}+C_{w2})}{C_1}\)

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Which of the following expressions represent the correct formula for calculating the blade efficiency?

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