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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.

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

Kinetic theory of gases assumes that the collisions between the molecules are________________?

A perfectly elastic

B perfectly inelastic

C partly elastic

D partly inelastic

Review Detailed Answer

Correct Answer: perfectly elastic

Temperature of a gas is produced due to________________?

A its heating value

B kinetic energy of molecules

C repulsion of molecules

D attraction of molecules

Review Detailed Answer

Correct Answer: kinetic energy of molecules

The unit of pressure in S.I. units is____________________?

A kg/cm2

B mm of water column

C pascal

D dynes per square cm

Review Detailed Answer

Correct Answer: pascal

According to Dalton’s law, the total pres sure of the mixture of gases is equal to________________?

A greater of the partial pressures of all

B average of the partial pressures of all

C sum of the partial pressures of all

D sum of the partial pressures of all divided by average molecular weight

Review Detailed Answer

Correct Answer: sum of the partial pressures of all

An ideal gas as compared to a real gas at very high pressure occupies_________________?

A more volume

B less volume

C same volume

D unpredictable behaviour

Review Detailed Answer

Correct Answer: more volume

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

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________________?

Kinetic theory of gases assumes that the collisions between the molecules are________________?

Temperature of a gas is produced due to________________?

The unit of pressure in S.I. units is____________________?

According to Dalton’s law, the total pres sure of the mixture of gases is equal to________________?

An ideal gas as compared to a real gas at very high pressure occupies_________________?