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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.

Working principle of dead weight pressure gauge tester is based on_______________?

A Pascal’s law

B Dalton’s law of partial pressure

C Newton’s law of viscosity .

D Avogadro’s hypothesis

Review Detailed Answer

Correct Answer: Pascal’s law

Center of pressure compared to e.g. is___________________?

A above it

B below it

C at same point

D above or below depending on area of body

Review Detailed Answer

Correct Answer: below it

The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?

A upthrust

B reaction

C buoyancy

D metacentre

Review Detailed Answer

Correct Answer: buoyancy

A body floats in stable equilibrium ____________________?

A when its meatcentric height is zero

B when the metancentre is above e.g.

C when its e.g. is below it’s center of buoyancy

D metacentre has nothing to do with position of e.g. for determining stability

Review Detailed Answer

Correct Answer: when the metancentre is above e.g.

The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

A the area is horizontal

B the area is vertical

C the area is inclined

D all of the above

Review Detailed Answer

Correct Answer: all of the above

The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?

A 2.4 m

B 3.0 m

C 4.0 m

D ”2.5 m

Review Detailed Answer

Correct Answer: 3.0 m

For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?

A bottom surface of the body

B e.g. of the body

C metacentre

D all points on the surface of the body

Review Detailed Answer

Correct Answer: all points on the surface of the body

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to_________________?

A the weight of the body

B more than the weight of the body

C less than the weight of the body

D weight of the fluid displaced by the body

Review Detailed Answer

Correct Answer: weight of the fluid displaced by the body

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

A 10 m/sec

B 25 m/sec

C 2 m/sec

D 50 m/sec

Review Detailed Answer

Correct Answer: 2 m/sec

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

A 1 : 5

B 1 : 2.5

C 1 :25

D 1:V5″

Review Detailed Answer

Correct Answer: 1 : 5

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

Working principle of dead weight pressure gauge tester is based on_______________?

Center of pressure compared to e.g. is___________________?

The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?

A body floats in stable equilibrium ____________________?

The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?

For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to_________________?

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?