A thermistor is a
A.Thermo-couple
B.Thermometer
C.Thermal resistance
D.Thermal insulation
E.Miniature resistance
Category: Engineeeing Mcqs
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
Dropwise condensation occurs on a
A.Glazed surface
B.Smooth surface
C.Oily surface
D.Coated surface
E.None of the above
Metals are good conductors of heat because
A.They contain free electrons
B.Their atoms are relatively far apart
C.Their atoms collide frequently
D.They have reflecting surfaces
E.None of the above
In the speed of rotation of earth decreases, the weight of the body will
A.Increase
B.Decrease
C.Remain unaltered
D.Depends on speed ratio
E.Cannot be ascertained on the basis the information given
Warped castings may be produced due to
A.poor collapsibility of cores
B.non-provision of camber allowance on the pattern
C.weak flasks
D.any of the above
In an isothermal atmosphere
A.Pressure decreases linearly with elevation
B.Pressure is constant all over
C.Pressure varies in the same way as density
D.Pressure increases directly as the square of height
E.Pressure varies exponentially with density
Which emission has generally least proportion from a diesel engine as compared to a petrol engine?
A.Oxides of nitrogen
B.Hydrocarbons
C.Carbon monoxide
D.All of the above
A framed structure is perfect if it contains members equal to
A.n – 3
B.n – 2
C.2n – 1
D.2n – 2
E.2n – 3
Shot peening
A.Improves fatigue life of small parts
B.Causes metal surface to be in tension and the layer beneath in compression
C.Changes the crystalline structure of material
D.Refines the grain structure
E.Is done at recrystallization temperature
