Test: Engineering Mechanics - 6 - Mechanical Engineering MCQ

The static friction

The maximum height of a projectile on a horizontal plane, is

The acceleration of a particle moving with simple harmonic motion is __________ at themean position.

The velocity of a particle moving with simple harmonic motion is __________ at the mean position.

A framed structure is imperfect, if the number of members are __________ (2j - 3).

The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad / s², is

The total energy possessed by a system of moving bodies

The moment of inertia of a solid cylinder of mass m, radius r and length l about the longitudinal axis or polar axis is

In a screw jack, the effort required to lift the load is given by(where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

The terms 'leverage' and 'mechanical advantage' Of a compound lever have got the same meaning.

A couple produces

Energy may be defined as the capacity of doing work.

For a self locking machine, the efficiency must be

The resultant of the two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then

Onejoule is equal to

Whenever a force acts on a body and the body undergoes a displacement, then

When a particle moves along a straight path, there will be centripetal acceleration as well as tangential acceleration.

If the body falls freely under gravity, then the gravitational acceleration is taken as

A framed structure, as shown in the below figure, is a

The rate of change of displacement of a body is called

The efficiency of a screw jack is maximum, when(where α = Helix angle, and φ = Angle of friction.)

The periodic time (T) is given by(where ω = Angular velocity of particle in rad / s.)