Q. In the limit state design method, what is the primary consideration for structural safety?
A.
Serviceability
B.
Ultimate Limit State
C.
Fatigue
D.
Deflection
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Solution
The primary consideration for structural safety in the limit state design method is the Ultimate Limit State, which ensures the structure can withstand maximum loads.
Correct Answer:
B
— Ultimate Limit State
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Q. What is the effect of increasing the length of a simply supported beam on its deflection?
A.
Increases deflection
B.
Decreases deflection
C.
No effect
D.
Depends on load type
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Solution
Increasing the length of a simply supported beam increases its deflection under a given load, as deflection is proportional to the length cubed.
Correct Answer:
A
— Increases deflection
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Q. What is the formula for calculating the moment of inertia for a rectangular section?
A.
bh^3/12
B.
bh^2/12
C.
b^3h/12
D.
b^2h/12
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Solution
The moment of inertia I for a rectangular section is calculated as I = bh^3/12, where b is the base and h is the height.
Correct Answer:
A
— bh^3/12
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Q. What is the maximum bending moment for a simply supported beam with a point load at its center?
A.
WL/4
B.
WL/2
C.
WL
D.
WL^2/8
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Solution
For a simply supported beam with a point load W at the center, the maximum bending moment M is given by M = WL/4.
Correct Answer:
B
— WL/2
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Q. What is the primary purpose of the stiffness method in structural analysis?
A.
To find reactions
B.
To determine deflections
C.
To analyze indeterminate structures
D.
To calculate internal forces
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Solution
The primary purpose of the stiffness method is to analyze indeterminate structures by relating displacements to forces through stiffness matrices.
Correct Answer:
C
— To analyze indeterminate structures
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Q. Which method is used to analyze the deflection of indeterminate structures?
A.
Virtual Work Method
B.
Method of Joints
C.
Method of Sections
D.
Equilibrium Method
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Solution
The Virtual Work Method is commonly used to analyze the deflection of indeterminate structures.
Correct Answer:
A
— Virtual Work Method
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Q. Which of the following is a characteristic of a statically indeterminate structure?
A.
Equilibrium equations are sufficient
B.
More unknowns than equations
C.
Can be solved using only static equilibrium
D.
All members are pinned
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Solution
A statically indeterminate structure has more unknowns than equilibrium equations, requiring additional methods for analysis.
Correct Answer:
B
— More unknowns than equations
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