Top 250+ Solved Engineering Thermodynamics MCQ Questions Answer
Q. In all irrevesible processes, the entropy ofthe system
a. a) remains unaltered
b. b) reduces to zero
c. c) increases
d. d) none of the above
Q. Temperature of a gas is produced due towhich of the following?
a. a) attraction of molecules
b. b) repulsion of molecules
c. c) kinetic energy of molecules
d. d) all of the above
Q. The same volume of all gases at same temperatureand pressure wouldrepresent their
a. a) specific gravity
b. b) densities
c. c) specific weights
d. d) molecular weights
Q. First law of thermodynamics gives relationship between which of thefollowing?
a. a) heat & internal energy
b. b) heat & work
c. c) heat, work & properties of the system
d. d) various thermodynamics processes
Q. The temperature in a process in which work is done by expanding a gas underadiabatic condition will
a. a) decrease
b. b) increase
c. c) first decrease & then increase
d. d) remain unaltered
Q. On which of the following laws measurement of temperature is based?
a. a) joule\s law
b. b) zeroth law of thermodynamics
c. c) first law of thermodynamics
d. d) second law of thermodynamics
Q. The perpetual motion of the first kind is represented by which of the following?
a. a) a machine that continuously creates itsown energy
b. b) an engine with 100 percent efficiency
c. c) a fully reversible engine
d. d) none of the above
Q. Which of the following statements regarding a perpetual motion machine is correct?
a. a) it is an in efficient machine
b. b) it is non-thermodynamic machine
c. c) it is thermodynamic machine
d. d) it is hypothetic machine whose operation would violate the laws of thermodynamics
Q. Which of the following statements, regarding a property of system, iscorrect?
a. a) it is path function
b. b) it is a point function
c. c) it is always of intensive type
d. d) none of the above
Q. ……….. Is an intensive property
a. a) specific volume
b. b) total volume
c. c) total mass
d. d) total energy of a system
Q. A system is said to be in thermodynamicequilibrium if it is in
a. a) chemical equilibrium
b. b) thermal equilibrium
c. c) mechanical equilibrium
d. d) all of the above
Q. The basis for measuring thermodynamic property of temperature is given by ……. Law of thermodynamics
a. a) zeroth
b. b) first
c. c) second
d. d) third
Q. As differentials, heat & work would bedescribed mathematically as
a. a) exact
b. b) inexact
c. c) point function
d. d) discontinuity
Q. Which of the following is an openthermodynamic system?
a. a) pressure cooker
b. b) manual ice cream freezer
c. c) centrifugal pump
d. d) none of the above
Q. ……… is a non-quasistatic process
a. a) free expansion of gas
b. b) expansion of gas in a cylinder under constantpressure
c. c) rapid leakage of air from a bicycle tyre
d. d) gradual compression of gas inside a piston-cylinderarrangement