When a bar of length l, width b and thickness t is subjected to a push of P, its

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When a bar of length l, width b and thickness t is subjected to a push of P, its
Options
A. length, width and thickness increases
B. length, width and thickness decreases
C. length increases, width and thickness decreases
D. length decreases, width and tickness increases

Correct Answer

length decreases, width and tickness increases

Strength of Materials problems

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3. A shaft of diameter D is subjected to a twisting moment (T) and a bending moment (M). If the maximum bending stress is equal to maximum shear stress developed, then M is equal to
Options
A. T/2
B. T
C. 2T
D. 4T

4. When a shaft, is subjected to torsion, the shear stress induced in the shaft varies from
Options
A. minimum at the centre to maximum at the circumference
B. maximum at the centre to minimum at the circumference
C. zero at the centre to maximum at the circumference
D. maximum at the centre to zero at the circumference

8. A circular shaft fixed at, A has diameter D for half of its length and diameter D/2 over the other half, as shown in the below figure. If the rotation of B relative to A is 0.1 radian, the rotation of C relative to B will be
Options
A. 0.4 radian
B. 0.8 radian
C. 1.6 radian
D. 3.2 radian

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