Engineering Mechanics MCQs

The forces, whose lines of action are parallel to each other and act in the same directions, are known as

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

A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

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

The mechanical advantage of a lifting machine is the ratio of

The efficiency of a lifting machine is the ratio of

When the spring of a watch is wound, it will possess

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.)