Civil Engineering - Steel Structure Design

41. 

A 20 mm dia steel bar which is subjected to an axial tension of 2300 kg/cm2 produces a strain of 0.004 cm. If Young's modulus of steel is 2.1 x 106 kg/cm2, the bar is

A. in the elastic range
B. in the plastic range
C. at yield point
D. none of these.

Answer: Option A

Explanation:

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42. 

Poisson's ratio for steel within elastic limit, ranges from

A. 0.15 to 0.20
B. 0.25 to 0.24
C. 0.25 to 0.33
D. 0.33 to 0.35
E. 0.45 to 0.50

Answer: Option C

Explanation:

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43. 

For eccentrically loaded columns, the bending factor is

A.
B.
C.
D.

Answer: Option C

Explanation:

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44. 

When a large value of radius of gyration is not required

A. channels are placed back to back
B. channel flanges are kept inward
C. channel flanges are kept outward
D. none of these.

Answer: Option B

Explanation:

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45. 

The maximum axial load which is just sufficient to keep a column in a small deflected shape, is called

A. crippling load
B. buckling load
C. critical load
D. all the above.

Answer: Option D

Explanation:

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