Civil Engineering MCQJE Level Civil Engineering
The stiffness matrix [k] for a beam element (2D, 2 DOF per node: vertical displacement and rotation) has dimensions:
Strength of MaterialsStrength of MaterialsHARD
Choose the correct answer
A
2×2
B
4×4
C
6×6
D
3×3
Correct Answer
B. 4×4
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
A 2D beam element has 2 nodes × 2 DOF = 4 DOF (w1, θ1, w2, θ2). Stiffness matrix is 4×4. Non-zero stiffness terms involve EI/L³ and EI/L² and EI/L. Assembled global stiffness matrix has dimensions equal to total structural DOF. Direct stiffness method: [K]{D} = {F}.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.