maximum cycle temperature
minimum cycle temperature
pressure ratio
all of these
✅ The correct answer is option D.
Thermodynamics MCQs
32. For the same compression ratio, the efficiency of Diesel cycle is __________ Otto cycle.
greater than
less than
equal to
✅ The correct answer is option B.
33. A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.
Yes
No
✅ The correct answer is option B.
34. Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules. This statement is called Avogadro’s law.
TRUE
FALSE
✅ The correct answer is option A.
35. A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
isothermal process
hyperbolic process
adiabatic process
polytropic process
✅ The correct answer is option B.
36. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.
TRUE
FALSE
✅ The correct answer is option A.
37. A triatomic molecule consists of __________ atoms.
one
two
three
four
✅ The correct answer is option C.
38. When a gas is heated at constant volume
its temperature will increase
its pressure will increase
both temperature and pressure will increase
neither temperature no
✅ The correct answer is option C.
39. In closed cycle gas turbine, the air is compressed
isothermally
isentropically
polytropically
none of these
✅ The correct answer is option B.
40. The entropy of water at 0°C is assumed to be
1
0
-1
10
✅ The correct answer is option B.