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.

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

According to kinetic theory of gases, the absolute zero temperature is attained when___________________?

A volume of the gas is zero

B pressure of the gas is zero

C kinetic energy of the molecules is zero

D specific heat of gas is zero

Review Detailed Answer

Correct Answer: kinetic energy of the molecules is zero

No liquid can exist as liquid at____________________?

A – 273 °K

B vacuum

C zero pressure

D centre of earth

Review Detailed Answer

Correct Answer: zero pressure

The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?

A E/3

B E/2

C 3E/4

D 2E/3

Review Detailed Answer

Correct Answer: E/3

The unit of power in S.I. units is_______________________?

A newton

B pascal

C erg

D watt

Review Detailed Answer

Correct Answer: watt

Superheated vapour behaves___________________?

A exactly as gas

B as steam

C as ordinary vapour

D approximately as a gas

Review Detailed Answer

Correct Answer: approximately as a gas

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

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_________________________?

According to kinetic theory of gases, the absolute zero temperature is attained when___________________?

No liquid can exist as liquid at____________________?

The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?

The unit of power in S.I. units is_______________________?

Superheated vapour behaves___________________?