Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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.

Atmospheric pressure is equal to____________?

A 1.013 bar

B 760mm of Hg

C 101.3KN/m2

D All of these

Review Detailed Answer

Correct Answer: All of these

Which of the following variables controls the physical properties of a perfect gas_________________?

A pressure

B temperature

C volume

D all of the above

Review Detailed Answer

Correct Answer: all of the above

The unit of time in S.I. units is__________________?

A second

B minute

C hour

D day

Review Detailed Answer

Correct Answer: second

Which of the following laws is applicable for the behavior of a perfect gas__________________?

A Boyle’s law

B Charles’law

C Gay-Lussac law

D all of the above

Review Detailed Answer

Correct Answer: all of the above

The unit of temperature in S.I. units is _________________?

A Centigrade

B Celsius

C Fahrenheit

D Kelvin

Review Detailed Answer

Correct Answer: Kelvin

The unit of length in S.I. units is________________?

A meter

B centimeter

C kilometer

D millimeter

Review Detailed Answer

Correct Answer: meter

According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

A temperature

B absolute

C absolute temperature, if volume is kept constant

D volume, if temperature is kept constant

Review Detailed Answer

Correct Answer: temperature

General gas equation is____________________?

A PV=nRT

B PV=mRT

C PV=KiRT

D PV = C

Review Detailed Answer

Correct Answer: PV=mRT

Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

A 02, N2, steam, C02

B Oz, N2, water vapour

C S02, NH3, C02, moisture

D 02, N2, H2, air

Review Detailed Answer

Correct Answer: 02, N2, H2, air

A closed system is one in which_________________________?

A mass does not cross boundaries of the system, though energy may do so

B mass crosses the boundary but not the energy

C neither mass nor energy crosses the boundaries of the system

D both energy and mass cross the boundaries of the system

Review Detailed Answer

Correct Answer: mass does not cross boundaries of the system, though energy may do so

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Atmospheric pressure is equal to____________?

Which of the following variables controls the physical properties of a perfect gas_________________?

The unit of time in S.I. units is__________________?

Which of the following laws is applicable for the behavior of a perfect gas__________________?

The unit of temperature in S.I. units is _________________?

The unit of length in S.I. units is________________?

According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as____________________?

General gas equation is____________________?

Which of the following can be regarded as gas so that gas laws could be applicable, within the commonly encountered temperature limits ?

A closed system is one in which_________________________?