Master Statics: Online Quizzes and Learning Resources

Question 1

The SI unit of force is:

Accepted Answer

Newton

Answer

Kilogram

Answer

Meter

Answer

Second

Question 2

Which condition is essential for a rigid body to be in mechanical equilibrium?

Accepted Answer

Zero net force and zero net moment

Answer

Zero net force

Answer

Zero net moment

Answer

Non-zero net force and non-zero net moment

Question 3

Define the shear force in a beam.

Accepted Answer

Rate of change of bending moment

Answer

Sum of vertical forces acting on the beam

Answer

Difference between bending moments at the beam's ends

Answer

Product of load and distance from the support

Question 4

Define the ultimate tensile strength of a material.

Accepted Answer

Maximum stress before rupture

Answer

Minimum stress before deformation

Answer

Stress at yielding

Answer

Stress at recovery from deformation

Question 5

Which of the following is not considered a force in engineering mechanics?

Accepted Answer

Moment

Answer

Weight

Answer

Tension

Answer

Friction

Question 6

The correct definition of the moment of a force about a point is:

Accepted Answer

The product of the force and the perpendicular distance from the point to the line of action of the force

Answer

The product of the force and the distance from the point to the line of action of the force

Answer

The product of the force and the angle between the force and the line connecting the point to the force

Answer

The product of the force and the area of the surface over which the force acts

Question 7

The equations of equilibrium are primarily used to:

Accepted Answer

Calculate the forces and moments acting on an object in equilibrium

Answer

Calculate the acceleration of an object in equilibrium

Answer

Calculate the velocity of an object in equilibrium

Answer

Calculate the position of an object in equilibrium

Question 8

For a particle to be in equilibrium, it is necessary that:

Accepted Answer

The resultant force acting on it is zero

Answer

The resultant moment acting on it is zero

Answer

Both the resultant force and moment acting on it are zero

Answer

Its acceleration is zero

Question 9

For a rigid body to be in equilibrium, it is essential that:

Accepted Answer

The resultant force and the resultant moment acting on it are both zero

Answer

Only the resultant force acting on it is zero

Answer

Only the resultant moment acting on it is zero

Answer

Its acceleration is zero

Question 10

Which of the following methods is not commonly used to solve statics problems?

Accepted Answer

Method of trial and error

Answer

Method of sections

Answer

Method of moments

Answer

Method of virtual work

Question 11

Define the method of sections.

Accepted Answer

A technique used to determine internal forces and reactions at a specific location of a structure by cutting it.

Answer

A method for calculating only the reactions at supports of a static structure.

Answer

A graphical technique for determining the shear force and bending moment diagrams of a structure.

Answer

A method for analyzing the stability of a structure.

Question 12

Which SI unit represents force?

Accepted Answer

Newton (N)

Answer

Kilogram (kg)

Answer

Joule (J)

Answer

Meter (m)

Question 13

A couple is defined as:

Accepted Answer

Two forces with equal magnitude but opposite direction.

Answer

Forces acting along the same line of action.

Answer

Forces with different magnitudes and directions.

Answer

Parallel forces that do not intersect.

Question 14

The formula for the moment of a force about a point is:

Accepted Answer

F x r

Answer

F x d

Answer

F / r

Answer

F / d

Question 15

For equilibrium of a rigid body under three forces, which condition must be met?

Accepted Answer

Forces form a closed polygon.

Answer

Forces are parallel.

Answer

Forces intersect at a point.

Answer

Forces have equal magnitude.

Question 16

Which quantity is NOT a scalar?

Accepted Answer

Moment

Answer

Mass

Answer

Length

Answer

Force

Question 17

Which of the following is not a type of load that can act on a structure?

Accepted Answer

Heat

Answer

Couple

Answer

Moment

Answer

Force

Question 18

In the equilibrium equation ∑F = 0, what does 'F' represent?

Accepted Answer

Force

Answer

Moment

Answer

Velocity

Answer

Mass

Question 19

Which of the following is a vector quantity in statics?

Accepted Answer

Force

Answer

Volume

Answer

Mass

Answer

Energy

Question 20

What is the primary purpose of creating a free body diagram?

Accepted Answer

To illustrate all forces acting on an object.

Answer

To determine an object's displacement.

Answer

To measure an object's velocity.

Question 21

Which of the following is a scalar quantity?

Accepted Answer

Temperature

Answer

Acceleration

Answer

Velocity

Answer

Force

Question 22

What is the key distinction between a couple and a force?

Accepted Answer

A couple has no net force, while a force has a net force.

Answer

A force has a moment, while a couple does not.

Answer

A couple has a moment, while a force does not.

Question 23

State the principle of transmissibility.

Accepted Answer

The effect of a force on an object remains unchanged regardless of its point of application along the line of action.

Answer

The sum of forces acting on an object is zero.