Fundamentals of Machine Design (3141907) MCQs

MCQs of Flexural stresses

Showing 1 to 10 out of 16 Questions
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1.
The neutral axis of the cross-section a beam is that axis at which the bending stress is
(a) zero
(b) minimum
(c) maximum
(d) infinity
Answer:

Option (a)

2.
The bending stress in a beam is __________ section modulus.
(a) directly proportional to
(b) inversely proportional to
Answer:

Option (b)

3.
In a simple bending of beams, the stress in the beam varies
(a) linearly
(b) parabolically
(c) hyperbolically
(d) elliptically
Answer:

Option (a)

4.
The section modulus of a rectangular section about an axis through its C.G. is
(a) b2
(b) d2
(c) bd22
(d) bd26
Answer:

Option (d)

5.
A beam which is fixed at one end and free at the other is called
(a) simply supported beam
(b) fixed beam
(c) overhanging beam
(d) cantilever beam
Answer:

Option (d)

6.
The section modulus (Z) of a beam is given by
(a) I/y
(b) I.y
(c) y/I
(d) M/I
Answer:

Option (a)

7.
If the section modulus of a beam is increased, the bending stress in the beam will
(a) not change
(b) increase
(c) decrease
Answer:

Option (c)

8.
The bending moment at a point on a beam is the algebraic __________ of all the moments on either side of the point.
(a) sum
(b) difference
Answer:

Option (a)

9.
At the neutral axis of a beam
(a) the layers are subjected to maximum bending stress
(b) the layers are subjected to minimum bending stress
(c) the layers are subjected to compression
(d) the layers do not undergo any strain
Answer:

Option (d)

10.
The assumption, generally, made in the theory of simple bending is that
(a) the beam material is perfectly homogenous and isotropic
(b) the beam material is stressed within its elastic limit
(c) the plane sections before bending remain plane after bending
(d) all of the above
Answer:

Option (d)

Showing 1 to 10 out of 16 Questions
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