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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.

Specific weight of sea water is more that of pure water because it contains_________________?

A dissolved air

B dissolved salt

C suspended matter

D all of the above

Review Detailed Answer

Correct Answer: all of the above

Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?

A surface tension

B viscosity

C friction

D cohesion

Review Detailed Answer

Correct Answer: surface tension

Falling drops of water become spheres due to the property of ____________________?

A adhesion

B cohesion

C surface tension

D viscosity

Review Detailed Answer

Correct Answer: surface tension

The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?

A 500 kg

B 1000 kg

C 1500 kg

D 2000 kg

Review Detailed Answer

Correct Answer: 2000 kg

The buoyancy depends on___________________?

A mass of liquid displaced

B viscosity of the liquid

C pressure of the liquid displaced

D depth of immersion

Review Detailed Answer

Correct Answer: mass of liquid displaced

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?

A force of adhesion

B force of cohesion

C force of friction

D force of diffusion

Review Detailed Answer

Correct Answer: force of cohesion

Surface energy per unit area of a surface is numerically equal to _____________________?

A atmospheric pressure

B surface tension

C force of adhesion

D force of cohesion

Review Detailed Answer

Correct Answer: surface tension

The difference of pressure between the inside and outside of a liquid drop is _______________?

A p = Txr

B p = T/r

C p = T/2r

D p = 2T/r

Review Detailed Answer

Correct Answer: p = 2T/r

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?

A 2.4 m above the hydraulic gradient

B 6.4 m above the hydraulic gradient

C 10.0 m above the hydraulic gradient

D 5.0 above the hydraulic gradient

Review Detailed Answer

Correct Answer: 6.4 m above the hydraulic gradient

The vapour pressure over the concave surface is______________________?

A less man the vapour pressure over the plane surface

B equal to the vapour pressure over the plane surface

C greater than the vapour pressure over the plane surface

D zero

Review Detailed Answer

Correct Answer: less man the vapour pressure over the plane surface

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Specific weight of sea water is more that of pure water because it contains_________________?

Free surface of a liquid tends to contract to the smallest possible area due to force of_______________?

Falling drops of water become spheres due to the property of ____________________?

The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be ________________?

The buoyancy depends on___________________?

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_________________?

Surface energy per unit area of a surface is numerically equal to _____________________?

The difference of pressure between the inside and outside of a liquid drop is _______________?

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than____________________?

The vapour pressure over the concave surface is______________________?