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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.

If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be_________________?

A maximum

B minimum

C zero

D infinity

Review Detailed Answer

Correct Answer: zero

The coefficient of friction depends on________________?

A area of contact

B shape of surfaces

C strength of surfaces

D nature of surface

Review Detailed Answer

Correct Answer: nature of surface

The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________?

A 20 kg, – ve sense

B 20 kg, + ve sense

C 10 kg, + ve sense

D 10 kg, – ve sense

Review Detailed Answer

Correct Answer: 20 kg, – ve sense

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction___________________?

A along the plane

B horizontally

C vertically

D at an angle equal to the angle of friction to the inclined plane

Review Detailed Answer

Correct Answer: at an angle equal to the angle of friction to the inclined plane

In the equation of virtual work, following force is neglected_______________________?

A reaction of any smooth surface with which the body is in contact

B reaction of a rough surface of a body which rolls on it without slipping

C reaction at a point or an axis, fixed in space, around which a body is con-strained to turn

D all of the above

Review Detailed Answer

Correct Answer: all of the above

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span___________________?

A 2.5 cm

B 3.0 cm

C 4.0 cm

D 5.0 cm

Review Detailed Answer

Correct Answer: 4.0 cm

The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be_________________?

A r/2

B 2r/3

C r/A

D 3r/2

Review Detailed Answer

Correct Answer: r/2

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate____________________?

A 0.5 cm

B 1.0 cm

C 1.5 cm

D 2.5 cm

Review Detailed Answer

Correct Answer: 0.5 cm

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve ____________________?

A catenary

B parabola

C hyperbola

D elliptical

Review Detailed Answer

Correct Answer: parabola

The units of moment of inertia of mass are ________________?

A kg m2

B m4

C kg/m2

D kg/m

Review Detailed Answer

Correct Answer: kg m2

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be_________________?

The coefficient of friction depends on________________?

The resultant of the following three couples 20 kg force, 0.5 m arm, $ ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be__________________?

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction___________________?

In the equation of virtual work, following force is neglected_______________________?

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span___________________?

The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be_________________?

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate____________________?

A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve ____________________?

The units of moment of inertia of mass are ________________?