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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

All Topics  1919

Intensive property of a system is one whose value____________________?
A depends on the mass of the system, like volume
B does not depend on the mass of the system, like temperature, pressure, etc
C is not dependent on the path followed but on the state
D is dependent on the path followed and not on the state
Correct Answer: does not depend on the mass of the system, like temperature, pressure, etc
Characteristic gas constant of a gas is equal to______________________?
A C/Cv
B Cv/Cp
C Cp – Cv
D Cp + Cv
Correct Answer: Cp – Cv
The ratio of two specific heats of air is equal to____________________?
A 0.17
B 0.24
C 0.1
D 1.41
Correct Answer: 1.41
Which law states that the internal energy of a gas is a function of temperature__________________?
A Charles’ law
B Joule’s law
C Regnault’s law
D Boyle’s law
Correct Answer: Joule’s law
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
Correct Answer: Regnault’s Law
An open system is one in which____________________?
A mass does not cross boundaries of the system, though energy may do so
B neither mass nor energy crosses the boundaries of the system
C both energy and mass cross the boundaries of the system
D mass crosses the boundary but not the energy
Correct Answer: both energy and mass cross the boundaries of the system
Gases have___________________?
A only one value of specific heat
B two values of specific heat
C three values of specific heat
D no value of specific heat
Correct Answer: two values of specific heat
Extensive property of a system is one whose value______________________?
A depends on the mass of the system like volume
B does not depend on the mass of the system, like temperature, pressure, etc.
C is not dependent on the path followed but on the state
D is dependent on the path followed and not on the state
Correct Answer: depends on the mass of the system like volume
The statement that molecular weights of all gases occupy the same volume is known as________________?
A Avogadro’s hypothesis
B Dalton’s law
C Gas law
D Law of thermodynamics
Correct Answer: Avogadro’s hypothesis
If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to__________________?
A + v
B – ve
C zero
D pressure x volume
Correct Answer: zero
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