# Effect of increasing number of stages on mean work input factor in axial flow compressor

**Q. What is the effect of increasing number of stages in axial flow compressor on the mean work input factor (Ψ**_{w})?*- Published on 16 Sep 15***a.** Mean work input factor (Ψ_{w}) decreases

**b.** Mean work input factor (Ψ_{w}) increases

**c.** Mean work input factor (Ψ_{w}) remains constant

**d.** Unpredictable

**ANSWER: Mean work input factor (Ψ**_{w}) decreases