Q.1
A machine used to raise the pressure of air is called
Q.2
The efficiency of jet engine is
Q.3
The volume of air delivered in a medium capacity air compressor per unit time is
Q.4
Reheating in a gas turbine
Q.5
In axial flow compressor, exit flow angle deviation from the blade angle is a function of
Q.6
The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)
Q.7
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be
Q.8
The air power of the compressor is also known as
Q.9
To avoid moisture troubles, the compressed air main line should
Q.10
The ratio of isentropic work to Euler work is known as
Q.11
The ratio of isentropic work to Euler’s work is known as
Q.12
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.
Q.13
The ratio of the discharge pressure to the inlet pressure of air is called
Q.14
The overall thermal efficiency of an ideal gas turbine plant is (where r = Pressure ratio)
Q.15
What will be the volume of air at 327°C if its volume at 27°C is 1.5 m³/ mt?
Q.16
The ideal efficiency of simple gas turbine cycle depends on
Q.17
There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would
Q.18
Ratio of indicated h.p. to shaft h.p. in known as
Q.19
Ratio of indicated H.P. and brake H.P. is known as
Q.20
Volumetric efficiency of a compressor with clearance volume
Q.21
The output of a gas turbine is 300 KW and its efficiency is 20 percent, the heat supplied is
Q.22
Compression efficiency is compared against
Q.23
Phenomenon of choking in compressor means
Q.24
Reheating in a multistage expansion gas turbine ________ compressor work.
Q.25
The work ratio of simple gas turbine cycle depends on
Q.26
The fuel consumption in gas turbines is accounted for by
Q.27
The indicated work per unit mass of air delivered is
Q.28
Which of the following plants is smallest and lightest for generating a given amount of power?
Q.29
Rotary compressors are suitable for
Q.30
An air compressor may be controlled by
0 h : 0 m : 1 s