Category: Thermodynamics Mcqs

A.1
B.1.33
C.1.4
D.1.41
E.1.67

A.Above room temperature
B.When it is impure
C.When it is diatomic
D.When it is reactive with any other gas
E.Above critical temperature

A.The greatest error in Briuell hardness measurements occur in measuring the diameter of specimen
B.Harder the material, greater the elastic recovery after deformation
C.Owing to elastic recovery, the radius of curvature of the indentation will be larger than that of the spherical indentor
D.None of the above

A.Surging
B.Stalling
C.Choking
D.Either of above
E.None of the above

A.decrease
B.increase
C.remain unaltered

A.Irreversible adiabatic flow
B.Perfect gas flow
C.Ideal fluid flow
D.Reversible adiabatic flow
E.Frictionaless reversible flow

A.Same as refrigerants
B.Those which are added to refrigerants for better performance
C.Those which lower down the freezing points of liquids
D.Those which do not freeze at all
E.Always in liquid state even at low temperatures

A.Pressure rise per stage will be equal
B.Work done in successive stages will be in geometrical progression
C.Cylinder volumes will be same
D.Temperature rise in the cylinders will be the same
E.The discharge pressure will be six times suction pressure

A.Otto cycle and Diesel cycle are equally efficient
B.Otto cycle is less efficient than diesel cycle
C.Efficiency depends mainly on working substance
D.None of the above

A.Isothermal
B.Constant volume
C.Free expansiton
D.Throttling