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WorksheetsStructural Design - II prerequisite
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Tensile strength of cement mortar is usually
a)
Briquette test
b)
Slump test
c)
Vicat needle test
d)
Split cylinder test
2.
Grading of aggregate in a concrete mix necessary to achieve
a)
Adequate workability
b)
Higher density
c)
Reduction in Voids
d)
Better durability
3.
Setting time of cement sample is tested by
a)
Slump test
b)
Vicat needle test
c)
Le-Chatelier's test
d)
Briquette test
4.
Workability of concrete is influenced by its
a)
Water-cement ratio
b)
Aggregate-cement ratio
c)
Cement content
d)
Water content
5.
The characteristic strength of concrete is defined as that compressive strength below which not more than
a)
10% of results fall
b)
5% of results fall
c)
2% of results fall
d)
None of these
6.
The cylinder strength of the concrete is less of gre than the cube strength because of
a)
The difference in the shape of the cross the section of the specimens
b)
The difference in the slenderness ratio of the specimens
c)
The friction between the concrete specimens and the steel plate of the testing machine
d)
The cubes are tested without capping but the cylinders are tested with capping
7.
The deformation in concrete due to sustained loading is
a)
creep
b)
hydration
c)
segregation
d)
shrinkage
8.
A cantilever beam curved in plan and subjected to lateral loads will develop at any section
a)
Bending moment and shearing force
b)
Bending moment and twisting moment
c)
Twisting moment and shearing force
d)
Bending moment, twisting moment and
9.
A simply supported beam is subjected to a uniformly distributed load. Which one of the following statements is true?
a)
maximum or minimum shear force occurs where the curvature is zero
b)
maximum or minimum bending moment occurs where the shear force is zero
c)
maximum or minimum bending moment occurs where the curvature is zero
d)
Maximum bending moment and maximum shear force occur at the same section
10.
Two people weighing W each are sitting on a plank of length L floating on water at L/4 from either end. Neglecting the weight of the plank, the bending moment at the centre of the plank is
a)
WL/8
b)
WL/16
c)
WL/32
d)
zero
11.
the first moment of area about the axis of bending for a beam cross-section is
a)
moment of inertia
b)
section modulus
c)
shape factor
d)
polar moment of inertia
12.
The "plane section remains plane" assumption in bending theory implies:
a)
Strain profile is linear
b)
stress profile is linear
c)
both strain and stress profiles are linear
d)
shear deformations are neglected
13.
For a given shear force across a symmetrical I section, the intensity of shear is maximum at
a)
Extreme fibres
b)
centroid of the section
c)
at the junction of the flange and the web, but not on the web
d)
at the junction of the flange and the web, but not on the flange
14.
A beam fixed at the ends and subjected to lateral loads only is statically indeterminate and the degee of indeterminacy is
a)
one
b)
two
c)
three
d)
four
15.
If the shear force at the section of the beam under bending is equal to zero then the Bending Moment at the section is
a)
zero
b)
maximum
c)
Minimum
d)
Max. or Min.
16.
Factor of safety adpoted by IS:800-1984 while arriving at the permissble stress in axial compression is
a)
2
b)
1
c)
1.67
d)
1.5
17.
the cementing property in cement is primarily due to
a)
Lime
b)
Silica
c)
Alumina
d)
Gypsum
18.
Gypsum is added in cement manufactoring for the property of
a)
Cementing
b)
setting
c)
Retarding the setting
d)
heat of hydration
19.
for the testing of compressive strength of cement, the size of cube used is
a)
5 cm
b)
7.06 cm
c)
10 cm
d)
15 cm
20.
for testing compressive and tensile strength of cement, the cement and standard sand in the proportions of
a)
1:2
b)
1:3
c)
1:4
d)
1:6
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