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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 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

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as_________________?

A meta center

B center of pressure

C center of buoyancy

D center of gravity

Review Detailed Answer

Correct Answer: center of pressure

A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?

A less

B more

C equal

D less at low temperature and more at high temperature

Review Detailed Answer

Correct Answer: more

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?

A increase

B decrease

C remain same

D increase/decrease depending on depth of immersion

Review Detailed Answer

Correct Answer: remain same

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

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___________________?

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as_________________?

A liquid would wet the solid, if adhesion forces as compared to cohesion forces are________________?

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?