Q. In a centrifugal compressor, the ratio of the __________ to the blade velocity is called slip factor.

View solution

Q. In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in

View solution

Q. The air is delivered __________ in one revolution in case of a three-lobbed rotor.

View solution

Q. The temperature of air at the beginning of the compression stroke is __________ the atmospheric temperature.

View solution

Q. The compressor efficiency is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.

View solution

Q. In a gas turbine, air is obtained from the atmosphere and compressed in an air compressor.

View solution

Q. In open cycle turbo-jet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

View solution

Q. Gas turbine as compared to internal combustion engine

View solution

Q. The performance of air compressor at high altitudes will be __________ as compared to that at sea level.

View solution

Q. In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

View solution

Q. In a centrifugal compressor, the air enters the impeller axially and leaves the vane radially.

View solution

Q. In gas turbines, the work input with intercooling is __________ the work input with no intercooling.

View solution

Q. The compressor capacity will be __________ if the temperature of intake air is lowest.

View solution

Q. For perfect intercooling in a three stage compressor,

View solution

Q. A machine used to raise the pressure of air is called

View solution

Q. The overall efficiency of the compressed air system is the

View solution

Q. In a jet engine, the compression varies as the square of the speed.

View solution

Q. In a single acting reciprocating air compressor, without clearance, the compression of air may be

View solution

Q. Which of the following statement is correct?

View solution

Q. Slip factor in a centrifugal compressor indicates the amount of air leaked from the storage vessel.

View solution