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Strength Of Materials
Quiz 13
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Q.1
The stress induced in a body, when suddenly loaded, is __________ the stress induced when the same load is applied gradually.
equal to
one-half
twice
four times
Q.2
A thick cylindrical shell having ro and ri as outer and inner radii, is subjected to an internal pressure (p). The maximum tangential stress at the inner surface of the shell is
[p (r₀² + ri²)] / (r₀² - ri²)
[p (r₀² - ri²)] / (r₀² + ri²)
2pri²/ (r₀² - ri²)
(r₀² - ri²) / 2pri²
Q.3
A body is subjected to a tensile stress ofMPa on one plane and another tensile stress ofMPa on a plane at right angles to the former. It is also subjected to a shear stress ofMPa on the same planes. The maximum normal stress will be
400 MPa
500 MPa
900 MPa
1400 MPa
Q.4
A steel bar of 5 mm is heated fromC toC and it is free to expand. The bar Will induce
no stress
shear stress
tensile stress
compressive stress
Q.5
Euler's formula holds good only for
short columns
long columns
both short and long columns
weak columns
Q.6
The object of caulking in a riveted joint is to make the joint
free from corrosion
stronger in tension
free from stresses
leak-proof
Q.7
A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the
axis of load
perpendicular to the axis of load
maximum moment of inertia
minimum moment of inertia
Q.8
Strain energy is the
energy stored in a body when strained within elastic limits
energy stored in a body when strained upto the breaking of a specimen
maximum strain energy which can be stored in a body
proof resilience per unit volume of a material
Q.9
Two shafts 'A' and 'B' transmit the same power. The speed of shaft 'A' isr.p.m. and that of shaft 'B' isr.p.m. The shaft 'B' has the greater diameter.
True
False
Q.10
Two non-collinear parallel equal forces acting in opposite direction
balance each other
constitute a moment
constitute a couple
constitute a moment of couple
Q.11
A framed structure is perfect if it contains members equal to (where n = number of joints in a frame)
2n-3
n-l
2n-l
n-2
Q.12
Forces are called concurrent when their lines of action meet in
one point
two points
plane
perpendicular planes
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