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Mechanical Engineering - Thermodynamics

Exercise : Thermodynamics - Section 3
31.
According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
remains constant
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
The hard coke is obtained when carbonisation of coal is carried out at
300° to 500°C
500° to700°C
700° to 900°C
900° to 1100°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
According to First law of thermodynamics,
total internal energy of a system during a process remains constant
total energy of a system remains constant
workdone by a system is equal to the heat transferred by the system
internal energy, enthalpy and entropy during a process remains constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
The root mean square velocity of the gas molecules is given by (where k = Boltzmann's constant, T = Absolute temperature, and m = Mass of one molecule of a gas)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Stirling cycle consists of
two constant volume and two isentropic processes
two constant volume and two isothermal processes
two constant pressure and two isothermal processes
one constant volume, one constant pressure and two isentropic processes
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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