For a single –stage water cooled air compressor

Question

Consider the following statements

         For a single –stage water cooled air compressor

1. The volumetric efficiency decreases as the pressure ratio is increased

2. Shaft power /m³/min of free air increases as the pressure ratio is increased

Which of the statements given above is/are correct?

(a) 1 only            (b) 2 only         (c) Both 1 and 2          (d) Neither 1 nor 2