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 two important forces for a floating body are__________________?

A buoyancy, gravity

B buoyancy, pressure

C buoyancy, inertial

D inertial, gravity

Review Detailed Answer

Correct Answer: buoyancy, gravity

Center of pressure on an inclined plane is___________________?

A at the centroid

B above the centroid

C below the centroid

D at metacentre

Review Detailed Answer

Correct Answer: below the centroid

The centre of gravity of the volume of the liquid displaced by an immersed body is called ___________________?

A centre of gravity

B centre of pressure

C metacentre

D centre of buoyancy

Review Detailed Answer

Correct Answer: centre of buoyancy

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?

A 2 metres of water column

B 3 metres of water column

C 3.5 metres of water column

D 4 m of water column

Review Detailed Answer

Correct Answer: 3 metres of water column

In an immersed body, centre of pressure is __________________?

A at the centre of gravity

B above the centre of gravity

C below be centre of gravity

D could be above or below e.g. depend¬ing on density of body and liquid

Review Detailed Answer

Correct Answer: below be centre of gravity

True one-dimensional flow occurs when_________________?

A the direction and magnitude of the veiocity at all points are identical

B the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

C the magnitude and direction of the velocity do not change from point to point in the fluid

D the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane

Review Detailed Answer

Correct Answer: the direction and magnitude of the veiocity at all points are identical

Gradually varied flow is__________________?

A steady uniform

B non-steady non-uniform

C non-steady uniform

D steady non-uniform

Review Detailed Answer

Correct Answer: steady non-uniform

Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?

A 1000 kg

B 4000 kg

C 2000 kg

D 8000 kg

Review Detailed Answer

Correct Answer: 1000 kg

Rotameter is a device used to measure______________?

A absolute pressure

B velocity of fluid

C flow

D rotation

Review Detailed Answer

Correct Answer: flow

In the case of steady flow of a fluid, the acceleration of any fluid particle is________________?

A constant

B variable

C zero

D zero under limiting conditions

Review Detailed Answer

Correct Answer: zero

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The two important forces for a floating body are__________________?

Center of pressure on an inclined plane is___________________?

The centre of gravity of the volume of the liquid displaced by an immersed body is called ___________________?

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?

In an immersed body, centre of pressure is __________________?

True one-dimensional flow occurs when_________________?

Gradually varied flow is__________________?

Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be_______________?

Rotameter is a device used to measure______________?

In the case of steady flow of a fluid, the acceleration of any fluid particle is________________?