Engineering Thermodynamics MCQ Questions & Answers

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Each section contains 100 MCQs on Engineering Thermodynamics .

Carnot cycle efficiency depends upon

A) Properties of the medium/substance used B) Condition of engine C) Working condition D) Temperature range of operation

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The expansion ratio (r) is the ratio of (where v₁ = Volume at the beginning of expansion and v₂ = Volume at the end of expansion)

A) $$\frac{{{{\text{v}}_1}}}{{{{\text{v}}_2}}}$$ B) $$\frac{{{{\text{v}}_2}}}{{{{\text{v}}_1}}}$$ C) $$\frac{{{{\text{v}}_1} + {{\text{v}}_2}}}{{{{\text{v}}_1}}}$$ D) $$\frac{{{{\text{v}}_1} + {{\text{v}}_2}}}{{{{\text{v}}_2}}}$$

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The gas turbine cycle with regenerator improves

A) Work ratio B) Thermal efficiency C) Avoid pollution D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The efficiency of a Carnot engine depends on

A) Working substance B) Design of engine C) Size of engine D) Temperatures of source and sink

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following statement is incorrect?

A) The liquid fuels have higher calorific value than solid fuels B) The solid fuels have higher calorific value than liquid fuels C) A good fuel should have low ignition point D) The liquid fuels consist of hydrocarbons

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Thermal power plant works on

A) Carnot cycle B) Joule cycle C) Rankine cycle D) Otto cycle

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Which of the following is the property of a system?

A) Pressure and temperature B) Volume and density C) Enthalpy and entropy D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which law states that the specific heat of a gas remains constant at all temperatures and pressures?

A) Charles' Law B) Joule's Law C) Regnault's Law D) Boyle's Law

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The temperature at which the volume of a gas becomes zero is called

A) Absolute scale of temperature B) Absolute zero temperature C) Absolute temperature D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In a steady flow process, the ratio of

A) Heat transfer is constant B) Work transfer is constant C) Mass flow at inlet and outlet is same D) All of these

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Engineering Thermodynamics MCQ Questions & Answers | Mechanical Engineering