Engineering Thermodynamics MCQ Questions & Answers

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Each section contains 100 MCQs on Engineering Thermodynamics .

The volumetric or molar specific heat at constant pressure is the product of

A) Molecular mass of the gas and the specific heat at constant volume B) Atomic mass of the gas and the gas constant C) Molecular mass of the gas and the gas constant D) None of the above

Discuss

Answer & Solution

Answer: Option D

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

In a Carnot cycle, heat is transferred at

A) Constant pressure B) Constant volume C) Constant temperature D) Constant enthalpy

Discuss

Answer & Solution

Answer: Option C

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

The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.

A) One-third B) Three-forth C) One-half D) Two-third

Discuss

Answer & Solution

Answer: Option D

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

For which of the following substances, the gas laws can be used with minimum error

A) Dry steam B) Wet steam C) Saturated steam D) Superheated steam

Discuss

Answer & Solution

Answer: Option D

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

The condition for the reversibility of a cycle is

A) The pressure and temperature of the working substance must not differ, appreciably, from those of the surroundings at any stage in the process B) All the processes, taking place in the cycle of operation, must be extremely slow C) The working parts of the engine must be friction free D) All of the above

Discuss

Answer & Solution

Answer: Option D

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

If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant

A) Volume B) Pressure C) Temperature D) Enthalpy

Discuss

Answer & Solution

Answer: Option A

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

The unit of universal gas constant is

A) Watt/K B) Dyne/°C C) Erg/K D) None of the above

Discuss

Answer & Solution

Answer: Option C

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

In S. I. units, the value of the universal gas constant is

A) 8.314 J/kg mole-K B) 83.14 J/kg mole-K C) 831.4 J/kg mole-K D) 8314 J/kg mole-K

Discuss

Answer & Solution

Answer: Option D

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

General gas equation is

A) PV = nRT B) PV = mRT C) PV = C D) PV = KiRT

Discuss

Answer & Solution

Answer: Option B

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

100

Petrol is distilled at

A) 65° to 220°C B) 220° to 345°C C) 345° to 470°C D) 470° to 550°C

Discuss

Answer & Solution

Answer: Option A

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

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Engineering Thermodynamics MCQ Questions & Answers | Mechanical Engineering