The process during which external work done is not zero, is
A.Constant volume process
B.Constant pressure process
C.Throttling
D.Free expansion
E.All of the above
Category: Thermodynamics Mcqs
Ericsson cycle processes are
A.Two isothermals and two constant pressures
B.Two isothermals and two constant volumes
C.Two isothermals and two isentropics
D.Two isothermals and two isentropics
E.Two adiabatic, constant volume and constant pressure
If the temperature of the sink is decreased, the efficiency of a Carnot engine
A.decreases
B.increases
C.remain unaffected
D.first increased and then decreases
Which of the following is not a path function?
A.Work
B.Heat
C.Kinetic energy
D.Thermal conductivity
E.All of the above
Air leaking from a punctured tube is an example of
A.Throttling
B.Adiabatic expansion
C.Isothermal expansion
D.Constant volume expansion
E.Constant pressure expansion
During an adiabatic expansion, the increase in volume is associated with
A.Decrease in pressure and decrease in temperature
B.decrease in pressure and increase in temperature
C.increase in pressure and decrease in temperature
D.increase in pressure and increase in temperature
The melting point of ice
A.is independent of atmospheric pressure
B.increases with increase in atmospheric pressure
C.decreases with increase in atmospheric pressure
The shape of the lid of manhole in a boiler is
A.Elliptical
B.Square
C.Rectangular
D.Circular
E.Special contour
The process in which the change in internal energy of a gas is equal to the work done is known as
A.isochoric process
B.isobaric process
C.isothermal process
D.adiabatic process
During throttling process
A.Internal energy does not change
B.Pressure does not change
C.Entropy does not change
D.Enthalpy does not change
E.Volume change is negligible
