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Civil Engineering - Strength of Materials


Exercise

"Example is better than precept."
- (Proverb)
46. 

As the elastic limit reaches, tensile strain

A. increases more rapidly
B. decreases more rapidly
C. increases in proportion to the stress
D. decreases in proportion to the stress.

47. 

The ratio of the flexural strengths of two square beams one placed with its two sides horizontal and the other placed with one diagonal vertical, diagonal, is

A. 2
B. 2
C. 5
D. 7

48. 

Simple bending equation is

A.
B.
C.
D.
E. none of these.

49. 

Every material obeys the Hooke's law within its

A. elastic limit
B. plastic point
C. limit of proportionality
D. none of these.

50. 

The maximum compressive stress at the top of a beam is 1600 kg/cm2 and the corresponding tensile stress at its bottom is 400 kg/cm2 . If the depth of the beam is 10 cm, the neutral axis from the top, is

A. 2 cm
B. 4 cm
C. 6 cm
D. 8 cm
E. 10 cm.




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