Basic Mechanical Engineering (3110006) MCQs

MCQs of Properties of Gases

Showing 11 to 20 out of 25 Questions
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11.
Change of internal energy during the isobaric process
(a) mCvT2-T1
(b) mCpT2-T1
(c) mRT2-T1
(d) none of these
Answer:

Option (a)

12.
The law PV = C is related to this process
(a) adiabatic
(b) isobaric
(c) isochoric
(d) isothermal
Answer:

Option (d)

13.
In the isothermal process
(a) temperature increases gradually
(b) volume remains constant
(c) pressure remains constant
(d) change in internal energy is zero
Answer:

Option (d)

14.
An isothermal process is governed by
(a) Boyle's law
(b) Charles' law
(c) Gay-Lussac law
(d) Avogadro's law
Answer:

Option (a)

15.
Heat transfer in the isothermal process is given by
(a) mCVT2-T1
(b) mCpT2-T1
(c) pVlnV2V1
(d) none of these
Answer:

Option (c)

16.
During the adiabatic process
(a) work transfer is zero
(b) heat transfer is zero
(c) enthalpy remains constant
(d) enthalpy change is zero
Answer:

Option (b)

17.
Workdone during adiabatic process
(a) pVlnV2V1
(b) pV2-V1
(c) p2V2-p1V1
(d) p1V1-p2V2γ-1
Answer:

Option (d)

18.
An adiabatic process is one in which
(a) no heat enters or leaves the gas
(b) the temperature of the gas changes
(c) the change in internal energy is equal to the mechanical work done
(d) all of the above
Answer:

Option (d)

19.
Polytropic expansion of a gas is given by the law
(a) pVn=C
(b) pVγ=C
(c) pV=C
(d) pV0=C
Answer:

Option (a)

20.
Heat transfer in the polytropic process is given by
(a) mCvT2-T1
(b) p1V1-p2V2n-1
(c) p1V1-p2V2γ-1
(d) γ-nγ-1×workdone
Answer:

Option (d)

Showing 11 to 20 out of 25 Questions
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