The ability of gasoline to resist detonation during combustion is given by
A.Octane number
B.Cetane number
C.iso-octane number
D.heptane number
Category: Thermodynamics Mcqs
Balanced draft incorporates
A.Forced draft
B.Induced draft
C.Forced and induced draft
D.Chimney draft only
1 bar pressure is nearly equal to
A.1 mm Hg
B.13.4 mm Hg
C.100 mm Hg
D.735 mm Hg
E.750 mm Hg
A choke is applied in a car
A.For increasing speed
B.For fuel economy
C.For starting in cold weather
D.For starting in hot weather
E.For reduction of speed
A thermistor is a
A.Thermo-couple
B.Thermometer
C.Thermal resistance
D.Thermal insulation
E.Miniature resistance
According to Amagat’s law
A.the sum of the volume friction is unity
B.there would be no volume change if the components are mixed while holding the temperature and pressure constant
C.all diatomic gases occupy double the volume of monoatomic gases for identical masses
D.None of the above
In any process the maximum amount of mechanical energy that can be converted to heat
A.Depends upon the amount of friction
B.Depends upon the intake and exhaust temperature
C.Depends upon whether kinetic energy is involved
D.Is 50%
E.Is 100%
In case of centrifugal compressors, the phenomenon of air stream not able to follow the blade contour of an axial compressor is known as
A.Surging
B.Stalling
C.Regeneration
D.Recirculation
E.Feedback
The dimensions of ‘a’ will be
A.ML2T
B.ML3T-2
C.ML5T-2
D.ML6T-2
