Explore topic-wise MCQs in Mechanical Engineering.

A body of mass m moving with a constant velocity v strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

The centre of percussion of the homogeneous rod of length L suspended at the top will be

The maximum mechanical advantage of a lifting machine is

In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than

The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

The maximum acceleration of a particle moving with simple harmonic motion is

The moment of inertia of a solid sphere of mass m and radius r is

Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

In actual machines, mechanical advantage is _________ velocity ratio.

The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

Which of the following is not a vector quantity?

The centre of gravity a T-section 100 mm 150 mm 50 mm from its bottom is

Kinetic friction is the

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

In actual machines

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

Two forces are acting at an angle of 120 . The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either

The range of projectile (R) on an upward inclined plane is

The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

Angle of friction is the

The centre of gravity of a uniform lamina lies at

The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

Lami's theorem states that

The velocity of a body on reaching the ground from a height h, is

A force acting on a body may

On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

The units of moment of inertia of an area are

The Cartesian equation of trajectory is (where u = Velocity of projection, = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)

Which of the following is the example of lever of first order?

Coulomb friction is the friction between

The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, = Angle of projection, and = Inclination of the plane with the horizontal.)

A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if

In the lever of third order, load W , effort P and fulcrum F are oriented as follows

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

Which is the correct statement about law of polygon of forces?

A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to

Coefficient of friction is the

The forces, which meet at one point and their lines of action also lie on the same plane, are known as

Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

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

The maximum velocity of a particle moving with simple harmonic motion is

The product of either force of couple with the arm of the couple is called

Frictional force encountered after commencement of motion is called

The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal

A particle inside a hollow sphere of radius r, having coefficient of friction can rest up to height of

A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

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

Limiting force of friction is the