1. Which method is commonly used for analyzing trusses?
A. Moment-curvature method
B. Direct stiffness method
C. Method of joints
D. Bending moment distribution method
Answer: C) Method of joints
Rationale: The method of joints is one of the simplest and most common methods used to
analyze trusses, focusing on equilibrium at each joint.
2. What is the degree of indeterminacy for a truss that is over-constrained (i.e., more members
than required)?
A. 1
B. 2
C. 3
D. Indeterminate
Answer: D) Indeterminate
Rationale: An over-constrained truss has more members than the stability equation allows,
making it statically indeterminate. Solving for forces requires considering material properties and
deformations.
,3. What does a "statically determinate" truss mean?
A. The truss can be solved using equilibrium equations alone
B. The truss requires additional constraints to solve
C. The truss has more unknown forces than equations
D. The truss is inherently unstable
Answer: A) The truss can be solved using equilibrium equations alone
Rationale: A statically determinate truss has enough equations of equilibrium to solve for all
unknown forces, making it stable and solvable without needing additional analysis.
4. In the method of joints, if a joint is subjected to two non-collinear external forces and no
external moments, what is the number of unknown forces?
A. 0
B. 1
C. 2
D. 3
Answer: B) 1
Rationale: At a joint with two non-collinear external forces, there is only one unknown force to
solve for, which is the internal force in one of the truss members.
5. Which of the following is used to calculate the deflection of a truss?
, A. Mohr’s Circle
B. Superposition principle
C. Timoshenko beam theory
D. Truss stiffness matrix
Answer: B) Superposition principle
Rationale: The superposition principle is often used to calculate deflections in trusses by
considering the effect of individual forces or moments on the structure.
6. What type of forces do members of a truss typically experience?
A. Bending forces
B. Axial forces
C. Shear forces
D. Torsional forces
Answer: B) Axial forces
Rationale: Truss members typically experience axial forces (tension or compression), with
bending, shear, and torsional forces being negligible.
7. In a simple truss, how many reactions can be expected at the supports?
A. 1
B. 2
C. 3
A. Moment-curvature method
B. Direct stiffness method
C. Method of joints
D. Bending moment distribution method
Answer: C) Method of joints
Rationale: The method of joints is one of the simplest and most common methods used to
analyze trusses, focusing on equilibrium at each joint.
2. What is the degree of indeterminacy for a truss that is over-constrained (i.e., more members
than required)?
A. 1
B. 2
C. 3
D. Indeterminate
Answer: D) Indeterminate
Rationale: An over-constrained truss has more members than the stability equation allows,
making it statically indeterminate. Solving for forces requires considering material properties and
deformations.
,3. What does a "statically determinate" truss mean?
A. The truss can be solved using equilibrium equations alone
B. The truss requires additional constraints to solve
C. The truss has more unknown forces than equations
D. The truss is inherently unstable
Answer: A) The truss can be solved using equilibrium equations alone
Rationale: A statically determinate truss has enough equations of equilibrium to solve for all
unknown forces, making it stable and solvable without needing additional analysis.
4. In the method of joints, if a joint is subjected to two non-collinear external forces and no
external moments, what is the number of unknown forces?
A. 0
B. 1
C. 2
D. 3
Answer: B) 1
Rationale: At a joint with two non-collinear external forces, there is only one unknown force to
solve for, which is the internal force in one of the truss members.
5. Which of the following is used to calculate the deflection of a truss?
, A. Mohr’s Circle
B. Superposition principle
C. Timoshenko beam theory
D. Truss stiffness matrix
Answer: B) Superposition principle
Rationale: The superposition principle is often used to calculate deflections in trusses by
considering the effect of individual forces or moments on the structure.
6. What type of forces do members of a truss typically experience?
A. Bending forces
B. Axial forces
C. Shear forces
D. Torsional forces
Answer: B) Axial forces
Rationale: Truss members typically experience axial forces (tension or compression), with
bending, shear, and torsional forces being negligible.
7. In a simple truss, how many reactions can be expected at the supports?
A. 1
B. 2
C. 3
