By doubling the temperature the radiant heat will increase
A.2 times
B.4 times
C.8 times
D.16 times
Category: Thermodynamics Mcqs
Pipes are insulated so that
A.They may not break under pressure
B.There is minimum corrosion
C.They can withstand higher fluid pressures
D.Heat loss from the surface is minimized
E.Vibrations resulting from fluid flow are minimized
The statement that energy can be neigher created nor destroyed but only converted from one form to another, is known as
A.Kinetic theory of gases
B.Avogadro’s hypothesis
C.Zerothlaw of thermodynamics
D.First law of theormodynamics
E.Second law of thermodynamics
The percentage of carbondioxide in the exhaust gases from a diesel engine cannot exceed
A.55%
B.50.50%
C.40%
D.36%
E.29%
When a gas expands in a closed vessel, the maximum work will be done when the process is at constant
A.Volume
B.Temperature
C.Pressure
D.Enthalpy
E.Entropy
Whenever a system undergoes either a change in state or an energy or mass transfer at a steady state, it is said to undergo
A.A change of state
B.A process
C.A steady state transfer
D.An equilibrium
E.A thermodynamic change
The specific heat of water
A.Increases with rise of temperature
B.Decreases with rise of temperature
C.Does not change with temperature
D.First decreases, reaches a minimum value and then increases
E.First increases, reaches a maximum value and then decreases.
A system
A.Is a specified region, not necessarily of constant volume, where transfer of energy and/or mass are to be studied
B.Is a region of constant mass and only energy is allowed to cross the boundaries
C.Cannot transfer either energy or mass to or from the surroundings
D.Has a mass transfer across its boundaries and the mass within the system is not constant
E.None of the above
The rate of diffusion along a column of certain cross-sectional area is proportional to the concentration gradient. Above statement is known as
A.Thompson’s law
B.Law of diffusion
C.Kirchhoff’s law
D.Fick’s law
E.None of the above
