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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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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.

All Topics  1919

Center of gravity of a thin hollow cone lies on the axis at a height of ___________________?
A one-fourth of the total height above base
B one-third of the total height above base
C one-half of the total height above base
D three-eighth of the total height above the base
Correct Answer: one-third of the total height above base
The center of percussion of the homogeneous rod of length L suspended at the top will be___________________?
A L/2
B L/3
C 3L/4
D 2L/3
Correct Answer: L/3
Center of gravity of a solid cone lies on the axis at the height _____________________?
A one-fourth of the total height above base
B one-third of the total height above base
C one-half of the total height above base
D three-eighth of the total height above the base
Correct Answer: one-fourth of the total height above base
The units of moment of inertia of an area are__________________?
A kg m2
B m4
C kg/m2
D m3
Correct Answer: m4
Center of percussion is___________________?
A the point of C.G.
B the point of metacentre
C the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
D point of suspension
Correct Answer: the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
The center of gravity of a uniform lamina lies at____________________?
A the center of heavy portion
B the bottom surface
C the mid point of its axis
D all of the above
Correct Answer: the mid point of its axis
The product of either force of couple with the arm of the couple is called_________________?
A resultant couple
B moment of the forces
C resulting couple
D moment of the couple
Correct Answer: moment of the couple
According to Lami’s theorem___________________?
A three forces acting at a point will be in equilibrium
B three forces acting at a point can be represented by a triangle, each side being proportional to force
C if three forces acting upon a particle are represented in magnitude and
D if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
Correct Answer: if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
D’ Alembert’s principle is used for______________________?
A reducing the problem of kinetics to equivalent statics problem
B determining stresses in the truss
C stability of floating bodies
D designing safe structures
Correct Answer: reducing the problem of kinetics to equivalent statics problem
According to law of triangle of forces __________________ ?
A three forces acting at a point will be in equilibrium
B three forces acting at a point can be represented by a triangle, each side being proportional to force
C if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
D if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two
Correct Answer: if three forces acting upon a patticle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium
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