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The efficiency of the vane blower is (where W1 = Work done due to compression and W2 = Work done due to back flow)

A. $$\frac{{{{\text{W}}_1}}}{{{{\text{W}}_1} + {{\text{W}}_2}}}$$

B. $$\frac{{{{\text{W}}_2}}}{{{{\text{W}}_1} + {{\text{W}}_2}}}$$

C. $$\frac{{{{\text{W}}_1} + {{\text{W}}_2}}}{{{{\text{W}}_1}}}$$

D. $$\frac{{{{\text{W}}_1} + {{\text{W}}_2}}}{{{{\text{W}}_2}}}$$

Answer: Option B

Solution(By Examveda Team)

The efficiency of the vane blower is $$\frac{{{{\text{W}}_2}}}{{{{\text{W}}_1} + {{\text{W}}_2}}}$$
Where,
W1 = Work done due to compression
W2 = Work done due to back flow

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