Mechanical Aptitude Test Principles 1

Question 1

Newton's Third Law of Motion states that for every action there is:

Accepted Answer

An equal and opposite reaction

Answer

Newton's Third Law states that forces always occur in pairs — when object A exerts a force on object B, object B exerts an equal force in the opposite direction on object A.

Question 2

Pascal's Principle states that pressure applied to an enclosed fluid is:

Accepted Answer

Transmitted equally in all directions throughout the fluid

Answer

Pascal's Principle is the basis of hydraulic systems — any pressure applied to a confined fluid is transmitted equally and undiminished to every point in the fluid.

Question 3

According to Archimedes' Principle, the buoyant force acting on a submerged object equals:

Accepted Answer

The weight of the fluid displaced by the object

Answer

Archimedes' Principle states that the upward buoyant force on an object equals the weight of the fluid it displaces, which determines whether the object floats or sinks.

Question 4

Bernoulli's Principle states that as the speed of a fluid increases, its pressure:

Accepted Answer

Decreases

Answer

Bernoulli's Principle describes the inverse relationship between fluid speed and pressure — faster-moving fluid exerts less lateral pressure, which is why aircraft wings generate lift.

Question 5

The mechanical advantage of a simple machine is defined as the ratio of:

Accepted Answer

Output force to input force

Answer

Mechanical advantage (MA) = Output Force ÷ Input Force. A MA greater than 1 means the machine multiplies force, allowing a smaller effort to move a larger load.

Mechanical Aptitude Test Practice Test

Mechanical Aptitude Test Practice Test

Mechanical Aptitude Test Principles 1