Q.1
A simple turbojet engine is basically
Q.2
The efficiency of a jet engine is higher at
Q.3
The degree of reaction in an axial flow compressor is defined as the ratio of static enthalpy rise in the
Q.4
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.
Q.5
Maximum work is done in compressing air when the compression is
Q.6
The following property is most important for material used for gas turbine blade
Q.7
The main purpose of reheating in gas turbine is to
Q.8
In the cross compounding of the gas turbine plant
Q.9
The advantage of multistage compression over single stage compression is
Q.10
1 m of air at atmospheric condition weighs approximately
Q.11
The clearance volume of the air compressor is kept minimum because
Q.12
Which is false statement about multistage compression?
Q.13
The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is
Q.14
If the flow of air through the compressor is parallel to its axis, then the compressor is
Q.15
Surging is the phenomenon of
Q.16
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as
Q.17
A rocket engine for the combustion of its fuel
Q.18
The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as
Q.19
The pressure of air at the beginning of the compression stroke is ________ the atmospheric pressure.
Q.20
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than
Q.21
In a centrifugal compressor, an increase in speed at a given pressure ratio causes
Q.22
A closed gas turbine in which fuel is burnt directly in the air is not possible because of
Q.23
For minimum work required to compress and deliver a quantity of air by multistage compression
Q.24
Pick up the wrong statement about advantages of multistage compression
Q.25
Which is false statement about advantages of multistage compressor in comparison to single stage compressor?
Q.26
The air-fuel ratio in gas turbines is of the order of
Q.27
Maximum delivery pressure is a rotary air compressor is of the order of
Q.28
Maximum temperature in a gas turbine is of the order of
Q.29
The maximum compression ratio in an actual single stage axial flow compressor is of the order of
Q.30
The type of rotary compressor used in gas turbines, is of
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