Mechanical Engineering Mechanics Online Test, Online Quiz 2019

According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

The friction experienced by a body, when in motion, is known as

Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity

The term ‘force’ may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.

The coefficient of restitution for elastic bodies is one.

The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is

The range of projectile on a downward inclined plane is __________ the range on upward inclined plane for the same velocity of projection and angle of projection.

The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.

A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.

The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.

The range of a projectile is maximum, when the angle of projection is

The mechanical advantage of a lifting machine is the ratio of

Static friction is always __________ dynamic friction.

A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.

When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.

The bodies which rebound after impact are called

The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.

The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

The triangle law of forces states that if two forces acting simultaneously on a particle, be represented in magnitude and direction by the two sides of a triangle taken in order, then their resultant may be represented in magnitude and direction by the third side of a triangle, taken in opposite order.

The angle between two forces when the resultant is maximum and minimum respectively are

The path of the projectile is a parabola.

A redundant frame is also called __________ frame.

A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.

When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.

During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.