7000+ Thermal Engineering Multiple Choice Questions and Answers Pdf - 1

Question: 1

According to kinetic theory of heat

(A) At absolute zero there is absolutely no vibration of molecules

(B) At low temperature all bodies are in solid state

(C) Temperature should fall during freezing

(D) Temperature should rise during boiling

Question: 2

Only throttling calorimeter is used for measuring

(A) Dryness fraction of only high pressure steam

(B) Dryness fraction of only low pressure steam

(C) Very high dryness fraction upto 0.98

(D) Very low dryness fraction upto 0.7

Question: 3

In an irreversible process, there is a

(A) Gain of heat

(B) No gain of heat

(C) Loss of heat

(D) No loss of heat

Question: 4

When two bodies are in thermal equilibrium with a third body they are also in thermal equilibrium with each other. This statement is called

(A) Kelvin Planck's law

(B) Zeroth law of thermodynamics

(C) First law of thermodynamics

(D) Second law of thermodynamics

Question: 5

The latent heat of vapourisation at critical point is

(A) Equal to zero

(B) Less than zero

(C) Greater than zero

(D) None of the above