Civil Engineering MCQAE Level Civil Engineering
A sample of dry sand tested in a direct shear test gives a failure shear stress of 100 kN/m² at a normal stress of 200 kN/m². The angle of internal friction is given by
Soil MechanicsSoil MechanicsMEDIUM
Choose the correct answer
A
tan⁻¹(2)
B
tan⁻¹(1)
C
tan⁻¹(1/4)
D
tan⁻¹(1/2)
Correct Answer
D. tan⁻¹(1/2)
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Dry sand: tau = sigma tan phi, so tan phi = 100/200 = 1/2.
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 WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.