Structures Analysis: Master the Fundamentals of Structural Engineering

Question 1

Which of the following is not a type of truss?

Accepted Answer

I-beam truss

Answer

Warren truss

Answer

Pratt truss

Answer

Vierendeel truss

Question 2

Which of the following is the correct formula for bending moment?

Accepted Answer

M = F * d

Answer

ΣFv = 0

Answer

ΣFh = 0

Answer

σ = F / A

Question 3

The principle of superposition states that the effect of a combination of loads on a structure is equal to the sum of the effects of each load acting individually.

Accepted Answer

sum

Answer

difference

Answer

product

Answer

quotient

Question 4

The ultimate tensile strength of a material is the maximum stress that the material can withstand before it fails.

Accepted Answer

maximum

Answer

minimum

Answer

average

Answer

yield

Question 5

Strain is defined as the:

Accepted Answer

Change in length per original length

Answer

Force acting per unit area

Answer

Deflection per unit length

Answer

Slope of the stress-strain curve

Question 6

The degree of redundancy in a structure is determined by:

Accepted Answer

The difference between the number of unknowns and equations

Answer

The difference between the number of supports and members

Answer

The ratio of the number of members to the number of supports

Answer

The sum of the number of unknowns and equations

Question 7

The SI unit of stress is the:

Accepted Answer

Pascal

Answer

Newton

Answer

Meter

Answer

Kilogram

Question 8

Which of the following methods is NOT typically employed to determine shear force and bending moment diagrams?

Accepted Answer

Method of virtual work

Answer

Method of sections

Answer

Method of superposition

Answer

Method of finite elements

Question 9

In the context of elastic materials, how does stress relate to strain?

Accepted Answer

Stress is directly proportional to strain

Answer

Stress is inversely proportional to strain

Answer

Stress is equal to strain

Answer

Stress is independent of strain

Question 10

What is the primary purpose of employing a moment distribution factor?

Accepted Answer

Distribute moments at a joint to connected members

Answer

Calculate shear force within a member

Answer

Determine bending moments at specific points in a member

Answer

Calculate deflections of a member

Question 11

What is the defining characteristic that differentiates statically determinate structures from statically indeterminate structures?

Accepted Answer

Statically determinate structures have fewer unknowns than equations, while indeterminate structures have more unknowns than equations

Answer

Statically determinate structures can be solved using equilibrium equations, while indeterminate structures cannot

Answer

Statically determinate structures are inherently more stable than indeterminate structures

Answer

There is no distinction between statically determinate and indeterminate structures

Question 12

What is the primary purpose of a flywheel?

Accepted Answer

Store energy

Answer

Reduce the speed of a machine

Answer

Increase the torque of a machine

Answer

Change the direction of rotation of a machine

Question 13

In a simply supported beam under the action of a uniformly distributed load, the maximum bending moment occurs at:

Accepted Answer

Mid-span of the beam

Answer

Close to the left support

Answer

At the quarter points of the span

Answer

Close to the right support

Question 14

In the analysis of a frame structure, the method of sections is typically used to determine:

Accepted Answer

The forces and moments at the cut sections

Answer

The deflections of the members

Answer

The stresses in the members

Answer

The reactions at the supports

Question 15

The Euler buckling load of a column is dependent on:

Accepted Answer

The material's Young's modulus, the length of the column, and the area moment of inertia of the cross-section.

Answer

Only the cross-sectional area and the material's density

Answer

Only the length of the column and the area moment of inertia

Answer

Only the material's Young's modulus and the cross-sectional area

Question 16

In a linear elastic material, the stress-strain relationship is governed by:

Accepted Answer

Hooke's law: σ = Eε

Answer

Mohr's circle: σx = σy + τxy

Answer

Euler's formula: P = π²EI/L²

Answer

Poisson's law: ν = εy/εx

Question 17

Poisson's ratio, a dimensionless property of materials, represents:

Accepted Answer

The ratio of transverse strain to axial strain under uniaxial loading

Answer

The ratio of Young's modulus to shear modulus

Answer

The ratio of axial stress to transverse stress

Answer

The ratio of shear stress to axial stress

Question 18

In structural design, a factor of safety is applied to the allowable stress to account for:

Accepted Answer

Uncertainties in material properties, loading conditions, and fabrication

Answer

Increase the strength of the structure beyond its required capacity

Answer

Reduce the cost of construction