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Quiz 12
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Q.1
The stress at which the extension of the material takes place more quickly as compared to the increase in load, is called
elastic limit
yield point
ultimate point
breaking point
Q.2
A beam supported at its both ends is not a simply supported beam.
True
False
Q.3
In a simple bending of beams, the stress in the beam varies
linearly
parabolically
hyperbolically
elliptically
Q.4
The rectangular beam 'A' has length l, width b and depth d. Another beam 'B' has the same length and depth but width is double that of 'A'. The elastic strength of beam 'B' will be __________ as compared to beam A.
same
double
four times
six times
Q.5
If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is
0.20
0.30
0.50
0.60
Q.6
If the depth is kept constant for a beam of uniform strength, then its width will vary in proportional to (where M = Bending moment)
M
M
M2
M3
Q.7
Resilience is the
energy stored in a body when strained within elastic limits
energy stored in a body when strained upto the breaking of the specimen
maximum strain energy which can be stored in a body
none of the above
Q.8
A composite shaft consisting of two stepped portions having spring constants k1 and k2 is held between two rigid supports at the ends. Its equivalent spring constant is
k1+k2
K1+K2/2
K1K2/K1+K2
K1+K2/K1K2
Q.9
A concentrated load is one which
acts at a point on a beam
spreads non-uniformly over the whole length of a beam
spreads uniformly over the whole length of a beam
varies uniformly over the whole length of a beam
Q.10
In order to know whether a column is long or short, we must know its slenderness ratio.
True
False
Q.11
The limit of eccentricity is based upon no tension condition.
True
False
Q.12
When a bar is cooled to - 5°C, it will develop
no stress
shear stress
tensile stress
compressive stress
Q.13
The bending stress in a beam is __________ section modulus.
directly proportional to
inversely proportional to
Q.14
When shear force at a point is zero, then bending moment is __________ at that point.
zero
minimum
maximum
infinity
Q.15
In compression test, the fracture in cast iron specimen would occur along
the axis of load
an oblique plane
at right angles to the axis of specimen
would not occur
Q.16
The maximum stress produced in a bar of tapering section is at
smaller end
larger end
middle
anywhere
Q.17
The simply supported beam 'A' of length l carries a central point load W. Another beam 'B' is loaded with a uniformly distributed load such that the total load on the beam is W. The ratio of maximum deflections between beams A and B is
5/8
8/5
5/4
4/5
Q.18
The energy stored in a body when strained within elastic limit is known as
resilience
proof resilience
strain energy
impact energy
Q.19
The point of contraflexure is a point where
shear force changes sign
bending moment changes sign
shear force is maximum
bending moment is maximum
Q.20
Strain rosettes are used to
measure shear strain
measure linear strain
measure volumetric strain
relieve strain
Q.21
The torque transmitted by a solid shaft of diameter (D) is (where τ = Maximum allowable shear stress)
x τ x D3
x τ x D3
x τ x D3
x τ x D3
Q.22
When a rectangular beam is loaded transversely, the maximum compressive stress is developed on the
top layer
bottom layer
neutral axis
every cross-section
Q.23
A thin cylindrical shell of diameter (d) and thickness (t) is subjected to an internal pressure (p). The ratio of longitudinal strain to volumetric strain is
(m - 1)/ (2m - 1)
(2m - 1)/ (m - 1)
(m - 2)/ (3m - 4)
(m - 2)/ (5m - 4)
Q.24
Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of spring 'A' is half that of spring 'B' The ratio of deflections in spring 'A' to spring 'B' is
1/8
1/4
1/2
2
Q.25
The maximum diameter of the hole that can be punched from a plate of maximum shear stress 1/4th of its maximum crushing stress of punch, is equal to (where t = Thickness of the plate)
t
2t
4t
8t
Q.26
The bending moment at a point on a beam is the algebraic __________ of all the moments on either side of the point.
sum
difference
Q.27
When a body is subjected to two equal and opposite pushes, as a result of which the body tends to reduce its length, the stress and strain induced is compressive.
True
False
Q.28
In order to prevent crushing of masonry at the base of the dam, the maximum stress should be __________ the permissible stress of the soil.
equal to
less than
more than
All of above
Q.29
A masonry dam may fail due to
tension in the masonry of the dam and its base
overturning of the dam
crushing of masonry at the base of the dam
any one of the above
Q.30
If the slenderness ratio for a column isthen it is said to be a __________ column.
long
medium
short
None of these
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