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 M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?

A same

B double

C half

D four times

Review Detailed Answer

Correct Answer: double

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of_______________?

A friction

B limiting friction

C repose

D kinematic friction

Review Detailed Answer

Correct Answer: repose

In ideal machines__________________?

A mechanical advantage is greater than velocity ratio

B mechanical advantage is equal to velocity ratio

C mechanical advantage is less than velocity ratio

D mechanical advantage is unity

Review Detailed Answer

Correct Answer: mechanical advantage is equal to velocity ratio

In actual machines_______________?

A mechanical advantage is greater than velocity ratio

B mechanical advantage is equal to velocity ratio

C mechanical advantage is less than velocity ratio

D mechanical advantage is unity

Review Detailed Answer

Correct Answer: mechanical advantage is less than velocity ratio

A cable with a uniformly distributed load per horizontal meter run will take the following shape________________?

A straight line

B parabola

C hyperbola

D elliptical

Review Detailed Answer

Correct Answer: parabola

The necessary condition for forces to be in equilibrium is that these should be_________________?

A coplanar

B meet at one point ;

C both A. and B. above

D all be equal

Review Detailed Answer

Correct Answer: both A. and B. above

The algebraic sum of moments of the forces forming couple about any point in their plane is_________________?

A equal to the moment of the couple

B constant

C both of above are correct

D both of above are wrong

Review Detailed Answer

Correct Answer: equal to the moment of the couple

A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is \i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will____________________?

A remain horizontal

B slant up towards direction of pull

C slant down towards direction of pull

D unpredictable

Review Detailed Answer

Correct Answer: slant down towards direction of pull

Tangent of angle of friction is equal to__________________?

A kinetic friction

B limiting friction

C angle of repose

D coefficient of friction

Review Detailed Answer

Correct Answer: coefficient of friction

Limiting force of friction is the__________________?

A tangent of angle between normal-reaction and the resultant of normal reaction and limiting friction

B ratio of limiting friction and normal reaction

C the friction force acting when the body is just about to move

D the friction force acting when the body is in motion

Review Detailed Answer

Correct Answer: the friction force acting when the body is just about to move

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?

The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of_______________?

In ideal machines__________________?

In actual machines_______________?

A cable with a uniformly distributed load per horizontal meter run will take the following shape________________?

The necessary condition for forces to be in equilibrium is that these should be_________________?

The algebraic sum of moments of the forces forming couple about any point in their plane is_________________?

Tangent of angle of friction is equal to__________________?

Limiting force of friction is the__________________?