Volumetric efficiency of a compressor decreases with __________ in compression ratio.

The degree of reaction is usually kept __________ for all types of axial flow compressors.

Which of the following bladings will give maximum pressure rise in a centrifugal compressor, assuming the same overall dimensions, blade inlet angle and rotational speeds ?

The volumetric efficiency of a compressor

The volumetric efficiency of a compressor

In an axial flow compressor, the ratio of pressure in theTOtor blades to the pressure rise in the compressor in one stage is known as

Reheating in a multi-stage expansion gas turbine __________ compressor work.

The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Air-craft velocity)

In axial flow compressor, exit flow angle deviation from the blade angle is a function of

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

An aftercooler is used to

Which of the following statement is correct?

Which of the following statement is wrong?

Rotary compressors are used for delivering

The compression ratio in a gas turbine is

High air-fuel ratio in gas turbines

In the aircraft propellers

In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in __________ of the piston.

Workdone by a two-stage reciprocating air compressor per cycle is equal to the workdone in LP. cylinder and H.P. cylinder.

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

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

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

The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.

A rotary compressor is driven by an

Only rocket engines can be propelled to space because

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)

The volume of air delivered by the compressor is called

The maximum delivery pressure in a rotary air compressor is

In a centrifugal compressor, an increase in speed at a given pressure ratio causes

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