Civil Engineering MCQJE Level Civil Engineering
In quality checking a civil-engineering calculation involving impending motion on a rough plane, which rule applies? Avoid the common trap that coefficient of friction has units of kN.
Engineering MechanicsFrictionMEDIUM
Choose the correct answer
A
friction always acts in direction of impending motion
B
friction is independent of normal reaction
C
coefficient of friction has units of kN
D
limiting friction equals coefficient of friction times normal reaction
Correct Answer
D. limiting friction equals coefficient of friction times normal reaction
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Dry friction follows F_lim = mu N. Correct option: D.
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This MCQ belongs to SSC JE Civil Paper-I Technical Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.