Questions and answers for exam Preparation

MCQs

Total Questions : 1549 | Page 4 of 155 pages

Question 31. Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to

Shear force
Area of the section
Distance of the C.G. of the area from its neutral axis
Moment of the beam section about its neutral axis

Discuss Question

Answer: Option D. -> Moment of the beam section about its neutral axis

Question 32. In a singly reinforced beam

Compression is borne entirely by concrete
Steel possesses initial stresses when embedded in concrete
Plane sections transverse to the centre line of the beam before bending remain plane after bending
Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

Discuss Question

Answer: Option C. -> Plane sections transverse to the centre line of the beam before bending remain plane after bending

Question 33. If the depth of actual neutral axis of a doubly reinforced beam

Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously
All the above

Discuss Question

Answer: Option D. -> All the above

Question 34. Distribution of shear intensity over a rectangular section of a beam, follows:

A circular curve
A straight line
A parabolic curve
An elliptical curve

Discuss Question

Answer: Option C. -> A parabolic curve

Question 35. If the shear stress in a R.C.C. beam is

Equal or less than 5 kg/cm², no shear reinforcement is provided
Greater than 4 kg/cm², but less than 20 kg/cm², shear reinforcement is provided
Greater than 20 kg/cm², the size of the section is changed
All the above

Discuss Question

Answer: Option D. -> All the above

Question 36. In a pre-stressed member it is advisable to use

Low strength concrete only
High strength concrete only
Low strength concrete but high tensile steel
High strength concrete and high tensile steel

Discuss Question

Answer: Option D. -> High strength concrete and high tensile steel

Question 37. In a simply supported slab, alternate bars are curtailed at

1/4th of the span
1/5th of the span
1/6th of the span
1/7th of the span

Discuss Question

Answer: Option D. -> 1/7th of the span

Question 38. If L is the effective span of a R.C.C. beam which is subjected to maximum shear qmax at the ends, the distance from either end over which stirrups for the shear, are provided, is