For a continuous beam analyzed using the unit load method for deflection, the fictitious load pattern applied is:

The correct answer is B: Concentrated at point of interest. Unit load method (virtual work) requires applying a unit load (or moment for slope) at the point where deflection (or slope) is required.

What is the nominal maximum size of coarse aggregate for concrete beams?

The correct answer is B: 20 mm. For reinforced concrete beams, nominal maximum coarse aggregate size is typically 20 mm to ensure proper placement around reinforcement.

For a beam element in finite element analysis, the shape functions are typically:

The correct answer is B: Cubic Hermite polynomials. Beam elements use cubic Hermite shape functions to ensure C¹ continuity (displacement and slope continuity).

In Castigliano's theorem, the partial derivative of strain energy with respect to a force gives:

The correct answer is B: Deflection in the direction of that force. Castigliano's first theorem states that ∂U/∂P = δ, where U is strain energy and δ is deflection in the direction of force P.

A continuous beam with three equal spans of 6 m each carries a uniform load of 10 kN/m. Using moment distribution method, which span experiences maximum bending moment?

The correct answer is B: Middle span. For continuous beams with equal spans and uniform loading, the middle span typically experiences larger negative moments at supports and larger positive moments due to symmetry considerations.

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Civil Engineering
Structural Analysis

Structures, surveying, soil mechanics

26 Q 2 Topics Take Mock Test

Difficulty: All Easy Medium Hard 21–26 of 26

Topics in Civil Engineering

All Structural Analysis 92 Concrete Technology 19

Q.21 Easy Structural Analysis

In the method of virtual work, a virtual displacement is applied to determine which quantity?

A Actual stresses in members

B Deflections and reactions

C Strain energy of the structure

D Modulus of elasticity

Correct Answer: B. Deflections and reactions

EXPLANATION

Virtual work method applies imaginary (virtual) displacements to calculate real deflections and support reactions in statically determinate and indeterminate structures.

Test

Q.22 Easy Structural Analysis

A cantilever beam of length 5 m carries a point load of 20 kN at the free end. The maximum bending moment occurs at which location?

A At the fixed end

B At the free end

C At 2.5 m from fixed end

D At 1.25 m from free end

Correct Answer: A. At the fixed end

EXPLANATION

For a cantilever beam, maximum bending moment always occurs at the fixed support where the reaction moment is maximum. BM = W × L = 20 × 5 = 100 kN-m at fixed end.

Test

Q.23 Easy Structural Analysis

In slope deflection method, what does the term 'FEM' represent?

A Fixed End Moment

B Flexural End Movement

C Final Elastic Moment

D Factored End Moment

Correct Answer: A. Fixed End Moment

EXPLANATION

FEM (Fixed End Moment) are moments developed in a member if both ends are fixed against rotation.

Test

Q.24 Easy Structural Analysis

For a cantilever beam of length L carrying uniformly distributed load w, the maximum bending moment occurs at:

A Free end

B Mid-span

C Fixed end

D At L/3 from fixed end

Correct Answer: C. Fixed end

EXPLANATION

For cantilever, maximum BM = wL²/2 occurs at fixed end where slope and deflection are also maximum.

Test

Q.25 Easy Structural Analysis

In the method of sections for truss analysis, the section should pass through maximum how many members?

A 2 members

B 3 members

C 4 members

D 5 members

Correct Answer: B. 3 members

EXPLANATION

Section should pass through maximum 3 members to solve for unknowns using 3 equilibrium equations (ΣFx, ΣFy, ΣM).

Test

Q.26 Easy Structural Analysis

Which of the following statements about determinate structures is correct?

A Number of unknowns equals number of equilibrium equations

B Number of unknowns exceeds number of equilibrium equations

C Number of unknowns is less than number of equilibrium equations

D Equilibrium equations are not applicable

Correct Answer: A. Number of unknowns equals number of equilibrium equations

EXPLANATION

A determinate structure has exactly as many unknowns as equilibrium equations, allowing unique solution without material properties.

Test

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