The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as Like parallel forces Coplanar concurrent forces Coplanar non-concurrent forces Unlike parallel forces TRUE ANSWER : ? YOUR ANSWER : ?
The friction experienced by a body, when at rest, is known as Static friction Dynamic friction Coefficient of friction Limiting friction TRUE ANSWER : ? YOUR ANSWER : ?
The motion of a particle round a fixed axis is Translatory Translatory as well as rotary Circular Rotary TRUE ANSWER : ? YOUR ANSWER : ?
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is 100 50 200 400 TRUE ANSWER : ? YOUR ANSWER : ?
When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium. Outward Inward Towards front Towards back TRUE ANSWER : ? YOUR ANSWER : ?
The coefficient of friction depends upon All of these Nature of surfaces Shape of the surfaces Area of contact TRUE ANSWER : ? YOUR ANSWER : ?
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called Principle of conservation of momentum Principle of conservation of energy Newton's first law of motion Newton's second law of motion TRUE ANSWER : ? YOUR ANSWER : ?
The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is 500 N None of these 100 N 20 N TRUE ANSWER : ? YOUR ANSWER : ?
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = m/W + C P = C - mW P = mW - C P = mW + C TRUE ANSWER : ? YOUR ANSWER : ?
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is None of these Non-reversible Reversible Ideal TRUE ANSWER : ? YOUR ANSWER : ?