Civil Engineering - Theory of Structures

Exercise :: Theory of Structures - Section 2

26. 

A cantilever of length 2 cm and depth 10 cm tapers in plan from a width 24 cm to zero at its free end. If the modulus of elasticity of the material is 0.2 x 106 N/mm2, the deflection of the free end, is

A. 2 mm
B. 3 mm
C. 4 mm
D. 5 mm
E. 6 mm

Answer: Option D

Explanation:

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27. 

Pick up the correct statement from the following:

A. The bending stress in a section is zero at its neutral axis and maximum at the outer fibres
B. The shear stress is zero at the outer fibres and maximum at the neutral axis
C. The bending stress at the outer fibres, is known as principal stress
D. The planes of principal stresses are inclined at 45° to the neutral plane
E. All the above.

Answer: Option E

Explanation:

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28. 

A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm2. If the slope at the ends is 0.005 radian and the value of E = 0.2 x 106 N/mm2, the depth of the joist, is

A. 200 mm
B. 250 mm
C. 300 mm
D. 350 mm
E. 400 mm

Answer: Option E

Explanation:

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29. 

A square column carries a load P at the centroid of one of the quarters of the square. If a is the side of the main square, the combined bending stress will be

A.
B.
C.
D.

Answer: Option C

Explanation:

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30. 

The degree of indeterminacy of the frame in the given figure, is

A. 1
B. 2
C. 3
D. zero

Answer: Option C

Explanation:

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