The enthalpy of vaporisation is minimum at
A.0?C
B.100?C
C.Critical temperature
D.Absolute zero
Category: Heat Engines Mcqs
The work done on a compressor will be least when air is taken from
A.Atmosphere
B.Source of low temperature air
C.Source of high temperature air
D.As and where available
E.A source at 0?C
The compression ratio in case of a gas turbine is of the order of
A.5
B.7
C.12
D.20
E.24
Which fuel will have least air consumption during combustion
A.Gasoline
B.Benzol
C.Spirit
D.Diesel fuel oil
E.Lubricating oil
In a Bomb calorimeter the fuel to be tested is burnt
A.At constant volume
B.At constant pressure
C.There is no consideration of volume or pressure
D.In open atmosphere
E.At constant temperature
During adiabatic compression
A.No heat leaves or enters the system
B.Maximum work is done
C.Specific heat remains constant
D.Temperature remains constant
E.None of the above
Morse test is conducted on
A.Single cylinder engines
B.Multi-cylinder engines
C.Vet engines
D.Horizontal engines
E.Vertical engines
Intake air filters are provided on air compressor for
A.Removing dirt and dust from suction air
B.Reducing temperature of suction air
C.Reducing pressure of suction pressure
D.Removing impurities of air
E.None of the above
A passout turbine generally operates on low pressure in the range
A.10 – 20 kg/cm2
B.20 – 50 kg/cm2
C.50 – 100 kg/cm2
D.100 – 150 kg/cm2
E.150 – 300 kg/cm2
