Hooke's law states that stress and strain are directly proportional inversely pr

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Question
Hooke's law states that stress and strain are
Options
A. directly proportional
B. inversely proportional
C. curvilinearly related
D. none of these.

Correct Answer

directly proportional

Strength of Materials problems

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3. The maximum deflection of
Options
A. a simply supported beam carrying a uniformly increasing load from either end and having the apex at the mid span is
B. a fixed ended beam carrying a distributed load over the span is
C. a fixed ended beam carrying a concentrated load at the mid span is
D. a cantilever beam subjected to a moment M at the free end is
E. All the above.

4. The stress necessary to initiate yielding, is considerably
Options
A. more than that necessary to continue it
B. less than that necessary to continue it
C. more than that necessary to stop it
D. less than that necessary to stop it.

5. The width b and depth d of a beam cut from a wooden cylindrical log of 100 cm diameter for maximum strength are :
Options
A. b = 57.73 cm d = 81.65 cm
B. b = 81.65 cm d = 57.73 cm
C. b = 50.00 cm d = 50.00 cm
D. b = 40.00 cm d = 80.00 cm
E. b = 30.00 cm d = 60.00 cm.

6. If the depth of a simply supported beam carrying an isolated load at its centre, is doubled, the deflection of the beam at the centre will be changed by a factor of
Options
A. 2
B. 1/2
C. 8
D. 1/8
E. 4

7. A beam is said to be of uniform strength, if
Options
A. B.M. is same throughout the beam
B. shear stress is same throughout the beam
C. deflection is same throughout the beam
D. bending stress is same at every section along its longitudinal axis.

9. The effect of arching a beam, is
Options
A. to reduce the bending moment throughout
B. to increase the bending moment throughout
C. nothing on the bending throughout
D. ail the above.

10. The moment diagram for a cantilever carrying linearly varying load from zero at its free end and to maximum at the fixed end will be a
Options
A. triangle
B. rectangle
C. parabola
D. cubic parabola.

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