TRUE
FALSE
✅ The correct answer is option A.
Thermodynamics MCQs
The isothermal and adiabatic processes are regarded as
reversible process
irreversible process
reversible or irreversible process
none of these
✅ The correct answer is option A.
The heating and expanding of a gas is called thermodynamic system.
Yes
No
✅ The correct answer is option B.
The area under the temperature-entropy curve (i. e. T – s curve) of any thermodynamic process represents the workdone during the process.
Agree
Disagree
✅ The correct answer is option B.
Which of the following is a reversible non-flow process?
Isochoric process
Isobaric process
Hyperbolic process
all of these
✅ The correct answer is option D.
The ultimate analysis of coal consists of the determination of the percentage of
carbon
hydrogen and nitrogen
sulphur and ash
all of these
✅ The correct answer is option D.
The compression ratio for Diesel engines is
3 to 6
5 to 8
15 to 20
20 to 30
✅ The correct answer is option C.
The general law of expansion or compression is pvn = C, The process is said to be hyperbolic, if n is equal to
0
1
γ
∝
✅ The correct answer is option B.
The process is adiabatic, if the value of n in the equation pvn = C, is
0
1
γ
∝
✅ The correct answer is option C.
When the gas is heated at constant volume, the heat supplied
increases the internal energy of the gas and increases the temperature of the gas
does some external work during expansion
Both (A) and (B)
None of these
✅ The correct answer is option A.