CIV3701: FOUNDATIONAL CIVIL ENGINEERING CONCEPTS - 100 Q&A
Section 1: Stress and Strain
1. What is the definition of Engineering Stress?
A) Force per unit area based on the original cross-section.
B) Force per unit area based on the instantaneous cross-section.
C) The deformation per unit length.
D) The ratio of lateral to axial strain.
Answer: A
2. What is the formula for axial (normal) stress?
A) τ = F / A
B) σ = P / A
C) ε = δ / L
D) E = σ / ε
Answer: B
3. The internal resistance offered by a material to deformation is known as:
A) Strain
B) Stress
C) Elasticity
D) Plasticity
Answer: B
4. What is the unit of strain?
A) Pascals (Pa)
B) Newtons (N)
C) It is dimensionless
D) Meters (m)
Answer: C
5. If a 10 mm diameter steel bar is subjected to a 50 kN tensile force, what is
the tensile stress?
A) 636.6 MPa
, B) 63.66 MPa
C) 500 MPa
D) 5 GPa
Answer: A (Calculation: σ = P/A = 50,000 N / (π*(0.005 m)²) ≈ 636.6 x
10⁶ Pa)
6. Hooke's Law describes the relationship between stress and strain in:
A) The plastic region
B) The elastic region
C) The fracture point
D) All regions
Answer: B
7. The constant of proportionality between stress and strain in the elastic
region is called:
A) Shear Modulus
B) Poisson's Ratio
C) Young's Modulus
D) Yield Strength
Answer: C
8. If a material stretches longitudinally and contracts laterally, the negative
ratio of lateral to axial strain is called:
A) Young's Modulus
B) Strain Hardening
C) Poisson's Ratio
D) Toughness
Answer: C
9. A material that returns to its original shape after the removal of a load is
said to be:
A) Plastic
B) Elastic
C) Ductile
, D) Brittle
Answer: B
10.The point on a stress-strain curve where plastic deformation begins is the:
A) Ultimate Tensile Strength
B) Proportional Limit
C) Yield Point
D) Fracture Point
Answer: C
Section 2: Shear Force and Bending Moments
11.A shear force at a section in a beam is defined as:
A) The sum of the moments to the left or right of the section.
B) The algebraic sum of all the vertical forces to the left or right of the
section.
C) The force acting perpendicular to the beam's axis.
D) The integral of the load function.
Answer: B
12.The bending moment at a section in a beam is defined as:
A) The algebraic sum of all the vertical forces at the section.
B) The algebraic sum of the moments of all forces to the left or right of the
section.
C) The point where the shear force is zero.
D) The maximum stress in the beam.
Answer: B
13.For a simply supported beam with a central point load, the maximum
bending moment occurs:
A) At the supports
B) At the point where the load is applied
C) At the quarter point
Section 1: Stress and Strain
1. What is the definition of Engineering Stress?
A) Force per unit area based on the original cross-section.
B) Force per unit area based on the instantaneous cross-section.
C) The deformation per unit length.
D) The ratio of lateral to axial strain.
Answer: A
2. What is the formula for axial (normal) stress?
A) τ = F / A
B) σ = P / A
C) ε = δ / L
D) E = σ / ε
Answer: B
3. The internal resistance offered by a material to deformation is known as:
A) Strain
B) Stress
C) Elasticity
D) Plasticity
Answer: B
4. What is the unit of strain?
A) Pascals (Pa)
B) Newtons (N)
C) It is dimensionless
D) Meters (m)
Answer: C
5. If a 10 mm diameter steel bar is subjected to a 50 kN tensile force, what is
the tensile stress?
A) 636.6 MPa
, B) 63.66 MPa
C) 500 MPa
D) 5 GPa
Answer: A (Calculation: σ = P/A = 50,000 N / (π*(0.005 m)²) ≈ 636.6 x
10⁶ Pa)
6. Hooke's Law describes the relationship between stress and strain in:
A) The plastic region
B) The elastic region
C) The fracture point
D) All regions
Answer: B
7. The constant of proportionality between stress and strain in the elastic
region is called:
A) Shear Modulus
B) Poisson's Ratio
C) Young's Modulus
D) Yield Strength
Answer: C
8. If a material stretches longitudinally and contracts laterally, the negative
ratio of lateral to axial strain is called:
A) Young's Modulus
B) Strain Hardening
C) Poisson's Ratio
D) Toughness
Answer: C
9. A material that returns to its original shape after the removal of a load is
said to be:
A) Plastic
B) Elastic
C) Ductile
, D) Brittle
Answer: B
10.The point on a stress-strain curve where plastic deformation begins is the:
A) Ultimate Tensile Strength
B) Proportional Limit
C) Yield Point
D) Fracture Point
Answer: C
Section 2: Shear Force and Bending Moments
11.A shear force at a section in a beam is defined as:
A) The sum of the moments to the left or right of the section.
B) The algebraic sum of all the vertical forces to the left or right of the
section.
C) The force acting perpendicular to the beam's axis.
D) The integral of the load function.
Answer: B
12.The bending moment at a section in a beam is defined as:
A) The algebraic sum of all the vertical forces at the section.
B) The algebraic sum of the moments of all forces to the left or right of the
section.
C) The point where the shear force is zero.
D) The maximum stress in the beam.
Answer: B
13.For a simply supported beam with a central point load, the maximum
bending moment occurs:
A) At the supports
B) At the point where the load is applied
C) At the quarter point
