Civil Engineering MCQJE Level Civil Engineering
A design assistant has to decide on energy stored in an elastic bar. Which statement is sound? Avoid the common trap that strain energy is always negative.
Strength of MaterialsStrain EnergyHARD
Choose the correct answer
A
strain energy is always negative
B
strain energy is independent of load
C
strain energy is PL/AE
D
strain energy under gradual axial load is P squared L divided by 2AE
Correct Answer
D. strain energy under gradual axial load is P squared L divided by 2AE
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The load-deflection curve is triangular for gradual elastic loading. Correct option: D.
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This MCQ belongs to RRB JE Civil & Allied Engineering CBT-2 Full Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.