4) The volumetric efficiency for reciprocating air compressors is about

5) The maximum temperature in a gas turbine is

6) The rotary compressors are suitable for large discharge of air at low pressure.

7) The stagnation pressure rise in a centrifugal compressor takes place

8) The total heat rejected in a reciprocating air compressor is equal to the sum of the heat rejected during polytropic compression per kg of air and heat rejected in the intercooler per kg of air.