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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 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

The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?

A viscosity

B osmosis

C surface tension

D cohesion

Review Detailed Answer

Correct Answer: osmosis

The continuity equation is connected with__________________?

A viscous/unviscous fluids

B compressibility of fluids

C conservation of mass

D steady/unsteady flow

Review Detailed Answer

Correct Answer: conservation of mass

Newton’s law of viscosity is a relationship between____________________?

A shear stress anctthejiate of angular distortion

B shear stress and viscosity

C shear stress, velocity and viscosity

D pressure, velocity and viscosity

Review Detailed Answer

Correct Answer: shear stress anctthejiate of angular distortion

Pressure of the order of 10″‘ torr can be measured by__________________?

A Bourdon tube

B Pirani Gauge

C micro-manometer

D ionisastion gauge

Review Detailed Answer

Correct Answer: ionisastion gauge

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?

A 1

B 1.2

C 0.8

D 0.75

Review Detailed Answer

Correct Answer: 0.75

Mercury is often used in barometer because____________________?

A it is the best liquid

B the height of barometer will be less

C its vapour pressure is so low that it may be neglected

D both B. and C.

Review Detailed Answer

Correct Answer: both B. and C.

The speed of sound in a ideal gas varies directly as its__________________?

A pressure

B temperature

C density

D modulus of elasticity

Review Detailed Answer

Correct Answer: temperature

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

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______________________?

The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?

The continuity equation is connected with__________________?

Newton’s law of viscosity is a relationship between____________________?

Pressure of the order of 10″‘ torr can be measured by__________________?

An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?

Mercury is often used in barometer because____________________?

The speed of sound in a ideal gas varies directly as its__________________?