A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Thermodynamics }



15. A closed system is one in which
A.Mass does not cross boundaries of the system, though energy may do so
B.Mass crosses the boundary but not the energy
C.Neither mass nor energy crosses the boundaries of the system
D.Both energy and mass cross the boundaries of the system

16. According to kinetic theory of gases, the absolute zero temperature is attained when
A.Volume of the gas is zero
B.Pressure of the gas is zero
C.Kinetic energy of the molecules is zero
D.Specific heat of gas is zero

17. The pressure of a gas in terms of its mean kinetic energy per unit volume E is equal to
A.E/3
B.E/2
C.3E/4
D.2E/3

18. Kinetic theory of gases assumes that the collisions between the molecules are
A.Perfectly elastic
B.Perfectly inelastic
C.Partly elastic
D.Partly inelastic

19. Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to
A.T
B.1/T
C.T/2
D.1-2T

20. Superheated vapour behaves
A.Exactly as gas
B.As steam
C.As ordinary vapour
D.Approximately as a gas

21. No liquid can exist as liquid at
A.-273 K
B.Vacuum
C.Zero pressure
D.Centre of earth

Page 3 of 71

« 1 2  3  45 »

Subjects