Q.1
An ideal air compressor cycle with clearance on P-V diagram can be represented by following processes
Q.2
The maximum combustion pressure in gas turbine as compared to I.C. engine is
Q.3
A compressor at high altitude will draw
Q.4
In which case the air-fuel ratio is likely to be maximum?
Q.5
With the decrease in compression ratio, the volumetric efficiency
Q.6
The compressor capacity is defined as the
Q.7
In a single stage, single acting reciprocating air compressor without clearance volume, the work-done is maximum during
Q.8
In a high pressure compressor, the delivery pressure is
Q.9
The capacity of compressor will be highest when its intake temperature is
Q.10
In a single stage, single acting reciprocating air compressor, without clearance volume, the work-done is minimum during
Q.11
In a centrifugal compressor, the flow of air is ________ to the axis of compressor.
Q.12
The most efficient method of compressing air is to compress it
Q.13
It is not possible to use closed gas turbine cycle in aeronautical engines because
Q.14
For slow speed large capacity compressor, following type of valve will be best suited
Q.15
In a centrifugal compressor, the ratio of the ________ to the blade velocity is called slip factor.
Q.16
For an irreversible gas turbine cycle, the efficiency and work ratio both depend on
Q.17
For minimum work in multistage compression, assuming same index of compression in all stages
Q.18
In a single acting reciprocating air compressor, without clearance, the compression of air may be
Q.19
The propulsive power of the rocket is (where v₁ = Jet velocity, and v₂ = Aircraft velocity)
Q.20
Euler's equation is applicable for
Q.21
The pressure ratio of an ideal vaned compressor with increase in mass flow rate
Q.22
The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio
Q.23
A closed cycle gas turbine consists of a
Q.24
During base load operation, the best method of controlling compressor is
Q.25
The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature
Q.26
The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is
Q.27
The effective power of gas turbines is increased by adding the following in compressor
Q.28
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at
Q.29
If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by
Q.30
Axial flow compressor has the following advantage over centrifugal compressor
0 h : 0 m : 1 s