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 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

The units of dynamic or absolute viscosity are__________________?

A metres2 per sec

B kg sec/meter

C newton-sec per meter

D newton-sec2 per meter

Review Detailed Answer

Correct Answer: newton-sec per meter

The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?

A surface tension

B co-efficient of viscosity

C viscosity

D osmosis

Review Detailed Answer

Correct Answer: viscosity

To avoid an interruption in the flow of a syphon, an air vessel is provided__________________?

A at the inlet

B at the outlet

C at the summit

D ay nay point between inlet and outlet

Review Detailed Answer

Correct Answer: at the summit

If the surface of liquid is convex, men ___________________?

A cohesion pressure is negligible

B cohesion pressure is decreased

C cohesion pressure is increased

D there is no cohesion pressure

Review Detailed Answer

Correct Answer: cohesion pressure is increased

Rain drops are spherical because of__________________?

A viscosity

B air resistance

C surface tension forces

D atmospheric pressure

Review Detailed Answer

Correct Answer: surface tension forces

The angle of contact in case of a liquid depends upon___________________?

A the nature of the liquid and the solid

B the material which exists above the free surface of the liquid

C both of die above

D any one of the above

Review Detailed Answer

Correct Answer: both of die above

The conditions for the stable equilibrium of a floating body are___________________?

A the meta-center should lie above the center of gravity

B the center of buoyancy and the center of gravity must lie on the same vertical line

C a righting couple should be formed

D all the above are correct

Review Detailed Answer

Correct Answer: all the above are correct

Showing 921 to 930 of 1919 results

Contact Info

Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

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________________?

The units of dynamic or absolute viscosity are__________________?

The property by virtue of which a liquid opposes relative motion between its different layers is called_________________?

To avoid an interruption in the flow of a syphon, an air vessel is provided__________________?

If the surface of liquid is convex, men ___________________?

Rain drops are spherical because of__________________?

The angle of contact in case of a liquid depends upon___________________?

The conditions for the stable equilibrium of a floating body are___________________?