strength-of-materials mechanical-engineering question and answers -Page 12

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Strength of Materials problems

2. The shear force diagram fora cantilever beam of length l and carrying a gradually varying load from zero at free end and w per unit length at the fixed end is a
Options
A. horizontal straight line
B. vertical straight line
C. inclined line
D. parabolic curve

4. A bolt is made to pass through a tube and both of them are tightly fitted with the help of washers and nuts. If the nut is tightened, then
Options
A. bolt arid tube are under tension
B. bolt and tube are under compression
C. bolt is under compression and tube is under tension
D. bolt is Under tension and tube is under compression

5. The volumetric strain is the ratio of the
Options
A. original thickness to the change in thickness
B. change in thickness to the original thickness
C. original volume to the change in volume
D. change in volume to the original volume

6. Which of the following statement is correct?
Options
A. The stress is the pressure per unit area.
B. The strain is expressed in mm.
C. Hook's law holds good upto the breaking point.
D. Stress is directly proportional to strain within elastic limit.

7. When a bar of length l, width b and thickness t is subjected to a pull 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 thickness increases

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