20) Isothermal compression though most efficient, but is not -practicable because

it requires very big cylinder

it does not increase pressure much

it is impossible in practice

compressor has to run at very slow speed to achieve it

Answer is:

compressor has to run at very slow speed to achieve it

mechanical efficiency

volumetric efficiency

isothermal efficiency

adiabatic efficiency

Answer is:

compression index

compression ratio

compressor efficiency

mean effective pressure

Answer is:

as large as possible

as small as possible

about 50% of swept volume

about 100% of swept volume

Answer is:

gauge discharge pressure to the gauge intake pressure

absolute discharge pressure to the ab-solute intake pressure

pressures at discharge and suction cor-responding to same temperature

stroke volume and clearance volume

Answer is: