1. The rotary compressors are suitable for large discharge of air at low pressure.
2. The stagnation pressure rise in a centrifugal compressor takes place
3. 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.
4. In a jet propulsion
5. An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
6. In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in __________ of the piston.
7. The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.
8. The maximum delivery pressure in a rotary air compressor is
9. The capacity of a compressor is expressed in
10. Intercooling in multi-stage compressors is done
11. For a two stage reciprocating compressor, compression from p1 to p3 is with perfect intercooling and no pressure losses. If compression in both the cylinders follows the same polytropic process and the atmospheric pressure is pa, then the intermediate pressure p2 is given by
12. The ratio of workdone per cycle to the stroke volume of the compressor is known as
13. The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.
14. The inlet pressure is always __________ the discharge pressure.
15. In the aircraft propellers
16. The type of rotary compressor used in gas turbines, is of
17. The volume of air delivered by the compressor is called
18. The efficiency of a jet engine is higher at
19. In axial flow compressor, exit flow angle deviation from the blade angle is a function of
20. Rotary compressors are used for delivering
21. Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.
22. A rotary compressor is driven by an
23. In a centrifugal compressor, an increase in speed at a given pressure ratio causes
24. A large clearance Volume in a reciprocating compressor results in
25. A closed cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.