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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.

To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is____________________?

A divided by its molecular weight

B multiplied by its molecular weight

C multiplied by its density

D multiplied by its specific weight

Review Detailed Answer

Correct Answer: multiplied by its molecular weight

Work done in a free expansion process is___________________?

A + ve

B -ve

C zero

D maximum

Review Detailed Answer

Correct Answer: zero

According to Avogadro’s Hypothesis ______________________?

A the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature

B the sum of partial pressure of mixture of two gases is sum of the two

C product of the gas constant and the molecular weight of an ideal gas is constant

D gases have two values of specific heat

Review Detailed Answer

Correct Answer: the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature

The same volume of all gases would represent their____________________?

A densities

B specific weights

C molecular weights

D gas characteristic constants

Review Detailed Answer

Correct Answer: molecular weights

Boyle’s law i.e. pV = constant is applicable to gases under ___________________?

A all ranges of pressures

B only small range of pressures

C high range of pressures

D steady change of pressures

Review Detailed Answer

Correct Answer: only small range of pressures

The behaviour of gases can be fully determined by___________________?

A 1 law

B 2 laws

C 3 laws

D 4 laws

Review Detailed Answer

Correct Answer: 4 laws

Specific heat of air at constant pressure is equal to___________________?

A 0.17

B 0.21

C 0.24

D 1.0

Review Detailed Answer

Correct Answer: 0.24

The condition of perfect vacuum, i.e., absolute zero pressure can be attained at ____________________?

A a temperature of – 273.16°C

B a temperature of 0°C

C a temperature of 273 °K

D a negative pressure and 0°C temperature

Review Detailed Answer

Correct Answer: a temperature of – 273.16°C

Absolute zero pressure will occur _____________________?

A at sea level

B at the center of the earth

C when molecular momentum of the system becomes zero

D under vacuum conditions

Review Detailed Answer

Correct Answer: when molecular momentum of the system becomes zero

Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to________________?

A T

B j

C J2

D Vr

Review Detailed Answer

Correct Answer: T

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

To convert volumetric analysis to gravimetric analysis, the relative volume of each constituent of the flue gases is____________________?

Work done in a free expansion process is___________________?

According to Avogadro’s Hypothesis ______________________?

The same volume of all gases would represent their____________________?

Boyle’s law i.e. pV = constant is applicable to gases under ___________________?

The behaviour of gases can be fully determined by___________________?

Specific heat of air at constant pressure is equal to___________________?

The condition of perfect vacuum, i.e., absolute zero pressure can be attained at ____________________?

Absolute zero pressure will occur _____________________?

Kinetic energy of the molecules in terms of absolute temperature (T) is proportional to________________?