Q.1.
When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is __________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.
Q.2.
Intercooling in gas turbines
Q.3.
A closed cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.
Q.4.
A large clearance Volume in a reciprocating compressor results in
Q.5.
In a centrifugal compressor, an increase in speed at a given pressure ratio causes
Q.6.
A rotary compressor is driven by an
Q.7.
Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.
Q.8.
Rotary compressors are used for delivering
Q.9.
The efficiency of a jet engine is higher at
Q.10.
The type of rotary compressor used in gas turbines, is of
Q.11.
In the aircraft propellers
Q.12.
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
Q.13.
The inlet pressure is always __________ the discharge pressure.
Q.14.
The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.
Q.15.
The ratio of workdone per cycle to the stroke volume of the compressor is known as
Q.16.
Intercooling in multi-stage compressors is done
Q.17.
The capacity of a compressor is expressed in
Q.18.
The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.
Q.19.
An open cycle gas turbine works on the same cycle as that of a closed cycle gas turbine.
Q.20.
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.