Professional Engineer (PE) Civil EXAM
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2025/2026 Q&A | INSTANT
DOWNLOAD PDF
Question 1
The SI unit of force is:
A. Joule
B. Newton
C. Pascal
D. Watt
Correct Answer: B. Newton
Rationale: The newton (N) is the SI unit used to measure force.
Question 2
Stress is defined as:
A. Force per unit area
B. Force times distance
C. Area divided by force
D. Mass times acceleration
Correct Answer: A. Force per unit area
Rationale: Normal stress is calculated as force divided by the cross-sectional area.
,Question 3
The SI unit of stress is:
A. Newton
B. Pascal
C. Meter
D. Joule
Correct Answer: B. Pascal
Rationale: A pascal represents one newton per square meter (N/m²).
Question 4
Strain is defined as:
A. Change in length divided by original length
B. Force divided by area
C. Mass divided by volume
D. Force multiplied by distance
Correct Answer: A. Change in length divided by original length
Rationale: Strain measures deformation relative to original size.
Question 5
Young's modulus represents:
A. The ratio of stress to strain in the elastic range
B. The weight of a material
C. The density of a material
D. The hardness of a material
Correct Answer: A. The ratio of stress to strain in the elastic range
Rationale: Young's modulus measures material stiffness.
,Question 6
The slope of a stress-strain curve in the elastic region represents:
A. Young's modulus
B. Density
C. Poisson's ratio
D. Yield strength
Correct Answer: A. Young's modulus
Rationale: The elastic slope defines the stiffness of the material.
Question 7
A material that returns to its original shape after unloading exhibits:
A. Elastic behavior
B. Plastic behavior
C. Failure behavior
D. Brittle fracture
Correct Answer: A. Elastic behavior
Rationale: Elastic deformation is reversible when the load is removed.
Question 8
Plastic deformation is:
A. Permanent deformation after removing load
B. Temporary deformation only
C. A type of corrosion
D. A type of vibration
Correct Answer: A. Permanent deformation after removing load
Rationale: Plastic deformation remains after the applied load is removed.
, Question 9
The centroid of a symmetrical rectangle is located:
A. At its geometric center
B. At the top edge
C. At the bottom edge
D. Outside the shape
Correct Answer: A. At its geometric center
Rationale: Symmetrical shapes have centroids at their geometric centers.
Question 10
Moment is calculated as:
A. Force × perpendicular distance
B. Force ÷ distance
C. Area × volume
D. Mass × density
Correct Answer: A. Force × perpendicular distance
Rationale: Moment represents the rotational effect of a force.
Question 11
The unit of moment is:
A. Force-length
B. Force-area
C. Length-volume
D. Mass-time
Correct Answer: A. Force-length
Rationale: Moments are commonly expressed as N·m or lb·ft.
QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2025/2026 Q&A | INSTANT
DOWNLOAD PDF
Question 1
The SI unit of force is:
A. Joule
B. Newton
C. Pascal
D. Watt
Correct Answer: B. Newton
Rationale: The newton (N) is the SI unit used to measure force.
Question 2
Stress is defined as:
A. Force per unit area
B. Force times distance
C. Area divided by force
D. Mass times acceleration
Correct Answer: A. Force per unit area
Rationale: Normal stress is calculated as force divided by the cross-sectional area.
,Question 3
The SI unit of stress is:
A. Newton
B. Pascal
C. Meter
D. Joule
Correct Answer: B. Pascal
Rationale: A pascal represents one newton per square meter (N/m²).
Question 4
Strain is defined as:
A. Change in length divided by original length
B. Force divided by area
C. Mass divided by volume
D. Force multiplied by distance
Correct Answer: A. Change in length divided by original length
Rationale: Strain measures deformation relative to original size.
Question 5
Young's modulus represents:
A. The ratio of stress to strain in the elastic range
B. The weight of a material
C. The density of a material
D. The hardness of a material
Correct Answer: A. The ratio of stress to strain in the elastic range
Rationale: Young's modulus measures material stiffness.
,Question 6
The slope of a stress-strain curve in the elastic region represents:
A. Young's modulus
B. Density
C. Poisson's ratio
D. Yield strength
Correct Answer: A. Young's modulus
Rationale: The elastic slope defines the stiffness of the material.
Question 7
A material that returns to its original shape after unloading exhibits:
A. Elastic behavior
B. Plastic behavior
C. Failure behavior
D. Brittle fracture
Correct Answer: A. Elastic behavior
Rationale: Elastic deformation is reversible when the load is removed.
Question 8
Plastic deformation is:
A. Permanent deformation after removing load
B. Temporary deformation only
C. A type of corrosion
D. A type of vibration
Correct Answer: A. Permanent deformation after removing load
Rationale: Plastic deformation remains after the applied load is removed.
, Question 9
The centroid of a symmetrical rectangle is located:
A. At its geometric center
B. At the top edge
C. At the bottom edge
D. Outside the shape
Correct Answer: A. At its geometric center
Rationale: Symmetrical shapes have centroids at their geometric centers.
Question 10
Moment is calculated as:
A. Force × perpendicular distance
B. Force ÷ distance
C. Area × volume
D. Mass × density
Correct Answer: A. Force × perpendicular distance
Rationale: Moment represents the rotational effect of a force.
Question 11
The unit of moment is:
A. Force-length
B. Force-area
C. Length-volume
D. Mass-time
Correct Answer: A. Force-length
Rationale: Moments are commonly expressed as N·m or lb·ft.
