Q. Which of the following statement is correct?

View solution

Q. In the aircraft propellers

View solution

Q. The type of rotary compressor used in gas turbines, is of

View solution

Q. The volume of air delivered by the compressor is called

View solution

Q. The efficiency of a jet engine is higher at

View solution

Q. The actual volume of air delivered by a compressor, When reduced to the normal temperature and pressure conditions is called compressor capacity.

View solution

Q. The compression ratio in a gas turbine is

View solution

Q. Intercooling in compressors results in saving of power in compressing given volume of air to a given pressure.

View solution

Q. Only rocket engines can be propelled to space because

View solution

Q. The maximum combustion pressure in gas turbine is __________ as compared to I.C. engine.

View solution

Q. Intercooling in multi-stage compressors is done

View solution

Q. 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

View solution

Q. The ratio of workdone per cycle to the stroke volume of the compressor is known as

View solution

Q. The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.

View solution

Q. The inlet pressure is always __________ the discharge pressure.

View solution

Q. An aftercooler is used to

View solution

Q. The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

View solution

Q. If p1, is the pressure of air entering the L.P. cylinder and p2 is the pressure of air leaving the L.P. cylinder (or intercooler pressure), then the ratio of cylinder diameters for a single acting, two stage reciprocating air compressor with complete intercooling is given by (where D1 = Dia. of L.P. cylinder, and D2 = Dia. of H.P. cylinder)

View solution

Q. The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

View solution

Q. Which of the following statement is wrong?

View solution