Q.1
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
Q.2
Gas turbine blades are given a rake
Q.3
The degree of reaction of an axial flow turbine is the ratio of isentropic temperature drop in a blade row to the
Q.4
The net work input required for compressor with increase in clearance volume
Q.5
Volumetric efficiency of a compressor without clearance volume
Q.6
The compression ratio for the compressor is always _________ unity.
Q.7
The hottest point in a gas turbine is
Q.8
Temperature of gases at end of compression as compared to exhaust gases in a gas turbine is
Q.9
The maximum temperature in a gas turbine is
Q.10
In a jet propulsion
Q.11
In a compressor, free air delivered is the actual volume delivered at the stated pressure reduced to
Q.12
When the temperature of air leaving the inter-cooler, in a two stage compression with inter-cooler, is ________ the original atmospheric air temperature, then the intercooling is known as perfect or complete intercooling.
Q.13
The mass of gas turbine per kW developed is about ________ as that of an I.C. engine.
Q.14
A jet engine works on the principle of conservation of
Q.15
A compressor mostly used for supercharging of I.C. engines is
Q.16
The volumetric efficiency of compressor with increase in compression ratio will
Q.17
The thermodynamic efficiency of rotary compressor is based on
Q.18
The ratio of work-done per cycle to the stroke volume of the compressor is known as
Q.19
Which of the following statement is correct?
Q.20
Which of the following statement is correct?
Q.21
The stagnation pressure rise in a centrifugal compressor takes place
Q.22
The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turbine and fixed higher and lower temperature) with increase in pressure ratio will
Q.23
The assumption made in two stage compression with inter-cooler is that
Q.24
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.
Q.25
Rotary compressors are used for delivering
Q.26
The air entry velocity m a rocket as compared to aircraft is
Q.27
The compressor efficiency is the
Q.28
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
Q.29
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called
Q.30
Pick up the wrong statement
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