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 resultant of all normal pressures acts___________________?

A at e.g. of body

B at center of pressure

C vertically upwards

D at metacentre

Review Detailed Answer

Correct Answer: vertically upwards

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to________________?

A sin 9

B sin 9

C cas 9

D cos 9

Review Detailed Answer

Correct Answer: sin 9

Manometer is used to measure__________________?

A pressure in pipes, channels etc

B atmospheric pressure

C very low pressure

D difference of pressure between two points

Review Detailed Answer

Correct Answer: pressure in pipes, channels etc

A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

A sink to bottom

B float over fluid

C partly immersed

D be fully immersed with top surface at fluid surface

Review Detailed Answer

Correct Answer: be fully immersed with top surface at fluid surface

Dynamic viscosity of most of the liquids with rise in temperature__________________?

A remains unaffected

B decreases

D unpredictable

Review Detailed Answer

Correct Answer: decreases

In an isothermal atmosphere, the pressure___________________?

A decreases linearly with elevation

B remains constant

C varies in the same way as the density

D increases exponentially with elevation

Review Detailed Answer

Correct Answer: varies in the same way as the density

Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

A gas law

B Boyle’s law

C Charle’s law

D Pascal’s law

Review Detailed Answer

Correct Answer: Boyle’s law

The atmospheric pressure with rise in altitude decreases__________________?

A linearly

B first slowly and then steeply

C first steeply and then gradually

D unpredictable

Review Detailed Answer

Correct Answer: first slowly and then steeply

Capillary action is due to the_________________?

A surface tension

B cohesion of the liquid

C adhesion of the liquid molecules and the molecules on the surface of a solid

D all of the above

Review Detailed Answer

Correct Answer: all of the above

The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?

A increase

B remain unaffected

C may increase or decrease depending on the characteristics of liquid

D decrease

Review Detailed Answer

Correct Answer: decrease

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The resultant of all normal pressures acts___________________?

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to________________?

Manometer is used to measure__________________?

A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

Dynamic viscosity of most of the liquids with rise in temperature__________________?

In an isothermal atmosphere, the pressure___________________?

Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

The atmospheric pressure with rise in altitude decreases__________________?

Capillary action is due to the_________________?

The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?