# Thermodynamics Practice Exams mcq – Set 12

Its our pleasure to assist you towards your goal. for inbuilt quality question with standard solution may help you a lot. you guys are looking for Mechanical engineering MCQ question with answers PDF free download as per Mechanical engineering new exam pattern? you come for the right page. Each question has four option followed by the right answer. these Mechanical MCQ question and solution may help you to get better performance in exam .

## Q1. The same volume of all gases would represent their

(A) Densities
(B) Specific weights
(C) Molecular weights
(D) Gas characteristic constants

## Q2. According to Avogadro’s law, for a given pressure and temperature, each molecule of a gas

(A) Occupies same volume
(B) Occupies volume proportional to its specific weight
(C) Occupies volume inversely proportional to its molecular weight
(D) Occupies volume inversely proportional to its specific weight

## Q3. Entropy change depends on

(A) Heat transfer
(B) Mass transfer
(C) Change of temperature
(D) Thermodynamic state

(A) 14
(B) 16
(C) 18
(D) 121

(A) Very low
(B) Low
(C) High
(D) Very high

## Q6. Which law states that the internal energy of a gas is a function of temperature?

(A) Charles’ law
(B) Joule’s law
(C) Boyle’s law
(D) There is no such law

## Q7. Mixture of ice and water form a

(A) Closed system
(B) Open system
(C) Isolated system
(D) Heterogeneous system

(A) Maximum
(B) Minimum
(C) Zero
(D) Negative

## Q9. An adiabatic process is one in which

(A) The temperature of the gas changes
(B) No heat enters or leaves the gas
(C) The change in internal energy is equal to the mechanical work done
(D) All of the above

## Q10. Which of the following is correct?

(A) Gauge pressure = Absolute pressure + Atmospheric pressure
(B) Absolute pressure = Gauge pressure + Atmospheric pressure
(C) Absolute pressure = Gauge pressure – Atmospheric pressure
(D) Atmospheric pressure = Absolute pressure + Gauge pressure

(A) Perfect gas
(B) Vapour
(C) Steam
(D) Air

(A) 0
(B) -1
(C) 1
(D) 2

## Q13. Carnot cycle has maximum efficiency for

Reversible engine
(B) Irreversible engine
(C) Petrol engine
(D) Diesel engine

## Q14. Which of the following is an irreversible cycle?

(A) Carnot
(B) Stirling
(C) Ericsson
(D) None of the above

## Q15. Which of the following cycles has maximum efficiency?

(A) Rankine
(B) Stirling
(C) Carnot
(D) Brayton

We have qualities knowledge to ensure that this question with solution will definitely help you to achieve perfect score. If you have any MCQ question regarding Mechanical engineering . then drop your questions below and will get back to you in no time.