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WorksheetsAPPLIED MECHANICS
Total questions: 100
Worksheet time: 37mins
Name
Class
Date
1.
If the area of a section is in mm^2 and the distance of the centre of area from a line is in mm, then units of the moment of inertia of the section is expressed in
a)
mm^2
b)
mm^3
c)
mm^4
d)
mm^5
2.
The second moment of an area is called___________
a)
moment
b)
moment of inertia
c)
torque
d)
couple
3.
Unit of force is
a)
newton
b)
Nmm
c)
mm^4
d)
mm
4.
Unit of moment is
a)
mm^2
b)
mm^3
c)
mm^4
d)
Nmm
5.
The turning tendency of a force about a point is called a _____________ of a force.
a)
moment
b)
torque
c)
moment of inertia
d)
couple
6.
The moment of inertia of a triangular section of base (b) and height (h) about the base is given by the relation
a)
bh^3/12
b)
bh^3/14
c)
bh^3/42
d)
bh^3/48
7.
The M.I of a Plane area is
a)
εar2
b)
εar3
c)
εar4
d)
εar
8.
The bending moment on a section is maximum where shearing force is
a)
minimum
b)
maximum
c)
zero
d)
neutral
9.
Theorem Of Perpendicular Axis can be written as___________
a)
Izz= Ixx+ Iyy
b)
IAB= IG+ a.h^2
c)
bh^3/12
d)
πd^4/64
10.
Theorem Of Parallel Axis can be written as___________
a)
Izz= Ixx+ Iyy
b)
IAB= IG+ a.h^2
c)
bh^3/12
d)
πd^4/64
11.
Moment of inertia of circular section is
a)
πd^4/64
b)
πd^4/32
c)
(πD^4- d^4)/64
d)
(πD^4- d^4)/32
12.
A structural member subjected to an axial compressive force is called as
a)
Beam
b)
Column
c)
Frame
d)
Strut
13.
A beam is carrying _________loads
a)
Axial
b)
transverse
c)
vertical
d)
all the above
14.
The bending moment at the free end of a cantilever any type of load is
a)
minimum
b)
maximum
c)
zero
d)
neutral
15.
The neutral axis of a section is an axis, at which the bending stress is
a)
minimum
b)
maximum
c)
zero
d)
neutral
16.
Moment of inertia of an area will be least with respect to
a)
Horizontal axis
b)
Vertical axis
c)
Bottom most axis
d)
Central axis
17.
If a cantilever beam is subjected to a point load at its free end, then the shear force under The point Load is
a)
Zero
b)
Less than the load
c)
Equal to the load
d)
more than the load
18.
A beam which is subjected to more than two supports is called as _________ beams
a)
Cantilever beam
b)
Fixed beams
c)
Continuous beams
d)
Simply supported beams
19.
The beam, the ends of which are made to freely rest on supports is known as ___________ beam
a)
Cantilever beam
b)
Fixed beams
c)
Continuous beams
d)
Simply supported beams
20.
A beam in which one end is fixed and is free at the other end is known as
a)
Cantilever beam
b)
Fixed beams
c)
Continuous beams
d)
Simply supported beams
21.
The beam, which is fixed at both ends is called as __________ beam
a)
Cantilever beam
b)
Fixed beams
c)
Continuous beams
d)
Simply supported beams
22.
fixed beams is also called as ________
a)
Cantilever beam
b)
Encastred Beams
c)
Continuous beams
d)
Simply supported beams
23.
The beams, the reactions of which at their supports is determined by the use of equations, is known as Statically ________ beams
a)
determinate
b)
Indeterminate
c)
fixed
d)
varying
24.
The beams, the reactions of which at their supports is be determined by the use of equations, is known statically______________ beams
a)
determinate
b)
Indeterminate
c)
fixed
d)
varying
25.
It is a load which generally zero at one point and continuously varying with reference to the spread load on the beam is known as Uniformly ____________ load.
a)
varying
b)
distribution
c)
Point Load
d)
Uniform Load
26.
It is a load act on a point therefore it is known as
a)
Point load
b)
Uniformly distributed load
c)
Uniformly Varying load
d)
Uniform Load
27.
The resultant force which is in the downward direction and is towards the RHS of the X - section ____________shear force.
a)
Positive
b)
Negative
c)
Neutral
d)
zero
28.
The resultant moment on the RHS position of the X-section is C.C.W, then it may be considered as _____________ bending moment
a)
Positive
b)
Negative
c)
Neutral
d)
zero
29.
The algebraic sum of the moments about an x-section of all the forces acting on either side of the section is
a)
Shear force
b)
Bending moment
c)
Varying force
d)
Total force
30.
The point of contra flexure is a point where
a)
Shear force changes sign
b)
Bending moment changes sign
c)
Shear force is maximum
d)
Bending moment is maximum
31.
When a cantilever is loaded at its free end, maximum compressive stress shall develop at
a)
Bottom
b)
Top
c)
Neutral
d)
Centre of gravity
32.
This load is spread over certain length of the beam is called as
a)
Uniformly distributed load
b)
Uniformly Varying load
c)
Point Load
d)
Length load
33.
If a force acts on a body, it sets up some resistance to the deformation. This resistance is known as
a)
Stress
b)
Strain
c)
Elasticity
d)
Modulus of elasticity
34.
The ratio between the stress and strain is known as _____
a)
Stress
b)
Strain
c)
Modulus of elasticity
d)
Hook's law
35.
The ratio of the maximum tensile load of a material can bear without failure, to the original cross-sectional area of the material is known as__________ strength.
a)
tensile
b)
compressive
c)
axial
d)
transverse
36.
The ratio of the maximum compressive load of a material can withstand without failure, to the original cross-sectional area of the material is known as __________ strength.
a)
tensile
b)
compressive
c)
axial
d)
transverse
37.
The property which allows a metal beam to be bent by hammering is known as __________
a)
malleability
b)
Ductility
c)
strength
d)
hardness
38.
Modulus of elasticity is otherwise called as __________ modulus
a)
Young’s
b)
shaer
c)
rigidity
d)
bulk
39.
The unit of Tensile stress is ________________
a)
N/m^2
b)
N
c)
mm^4
d)
mm
40.
The unit of Tensile strain is ________________
a)
no unit
b)
N/m^2
c)
N
d)
mm^4
41.
The term deformation per unit length is applied for
a)
Stress
b)
Strain
c)
Modulus of elasticity
d)
Hook's law
42.
The unit of Modulus of Elasticity is ________________
a)
N/m^2
b)
N
c)
mm^4
d)
mm
43.
The S.I unit of stress is
a)
no unit
b)
N/m2
c)
N/cm2
d)
N
44.
1 Pa (Pascal) = ___________ N/m2
a)
1
b)
10
c)
100
d)
1000
45.
SI-unit of load is ____________
a)
newton
b)
N/m^2
c)
mm^4
d)
mm
46.
Hook's law shows the ____________
a)
Elastic Behavior of Materials
b)
Plasticity
c)
Strength
d)
Tensile force
47.
Plastic flow property of a material is known as______
a)
Ductility
b)
Toughness
c)
Hardness
d)
Strength
48.
The effect of Tensile load is _______
a)
Compression
b)
elongation
c)
no change
d)
shear
49.
The property of a material to recover its original size when the applied force is removed
a)
Elasticity
b)
Elastic Limit
c)
Plasticity
d)
permanent
50.
The limit after which the piece of metal deforms permanently
a)
Plasticity
b)
Elastic Limit
c)
permanent limit
d)
Entry limits
51.
The property which allows a metal rod to be drawn into a wire of smaller cross section
a)
Ductility
b)
Toughness
c)
Hardness
d)
Strength
52.
When a material is loaded within elastic limit stress is proportional to
a)
Strain
b)
Force
c)
Tensile force
d)
Compressive force
53.
The capacity of a material to resist penetration, abrasion or a cut is known as
a)
hardness
b)
Ductility
c)
Plasticity
d)
Elasticity
54.
When a body is subjected to two equal and opposite pushing forces, the length of the body tends to decrease. These pushing forces are called
a)
Tensile loads
b)
Compressive loads
c)
Linear load
d)
Less load
55.
Due to external loads, the resistance offered by the material is _____________ proportional to the deformation of the material
a)
directly
b)
indirectly
c)
No relationship
d)
corelation
56.
An external force applied on a rigid body is called
a)
load
b)
strain
c)
body
d)
line
57.
Which law states that the stress is directly proportional to strain within the elastic limit
a)
Euler’s
b)
Newton’s
c)
Hook’s
d)
Law of Gearing
58.
The stress which is acting in steel wire of crane is
a)
Tensile stress
b)
Compressive stress
c)
Zero when load is lifting
d)
Negative stress
59.
Youngs modulus is denoted by a letter
a)
E
b)
G
c)
K
d)
N
60.
When a material is loaded within elastic limit_______ is proportional to strain
a)
Stress
b)
Strain
c)
Modulus of elasticity
d)
Hook's law
61.
A structural member subjected to an axial compressive force is called as
a)
Strut
b)
Beam
c)
Bend
d)
Shaft
62.
The load at which the column start buckles is called as ________ load
a)
buckling
b)
bending
c)
shear
d)
tensile
63.
The value of buckling load is ______ for long column
a)
Low
b)
High
c)
maximum
d)
zero
64.
A Column is also called a ____________
a)
Stanchion
b)
Beam
c)
Strut
d)
shaft
65.
A column is a _________ member subjected to an axial compressive load
a)
vertical
b)
inclined
c)
bend
d)
curve
66.
A strut is an __________ subjected to an axial compressive load
a)
inclined member (or) Horizontal
b)
vertical
c)
bend
d)
curve
67.
Connecting rod of an engine is an example for______
a)
Strut
b)
Beam
c)
Bend
d)
Shaft
68.
L/K is known as___________
a)
Slenderness ratio
b)
Young modulus
c)
Buckling stress
d)
permanent Set
69.
Ratio between ultimate load to safe load is known as__________
a)
Buckling stress
b)
Slenderness ratio
c)
Factor of safety
d)
Crippling load
70.
The equivalent length of a column supported firmly at one–end and free at other end is
a)
2L
b)
L
c)
0.75L
d)
L/2
71.
A column of length ‘l’ is fixed at its both ends. The equivalent length of the column will be
a)
2L
b)
4L
c)
0.75L
d)
L/2
72.
The ratio of lateral strain to the linear strain is called
a)
Modulus of elasticity
b)
Modulus of rigidity
c)
Bulk modulus
d)
Poisson’s ratio
73.
The slenderness ratio of a long column is
a)
0.75
b)
20
c)
60
d)
ABOVE 80
74.
Unit of slenderness ratio
a)
mm
b)
m
c)
cm
d)
no unit
75.
The critical load of the short columns is relatively _________
a)
High
b)
low
c)
minimum
d)
zero
76.
Short column fails due to
a)
Crushing load
b)
Buckling load
c)
Crippling load
d)
Critical load
77.
Long column fails due to
a)
Crushing load
b)
Buckling
c)
Area
d)
Length
78.
Unit of shear strain
a)
mm
b)
m
c)
cm
d)
No unit
79.
The design of thin cylindrical shells is based on
a)
Hoop stress
b)
Longitudinal stress
c)
Volumetric stress
d)
Young modulus
80.
The ratio of circumferential stress to longitudinal stress in a thin cylinder is__________
a)
2
b)
4
c)
6
d)
1
81.
In the case of thick cylinder subjected to fluid pressure, Longitudinal stress is ___________
a)
Tensile
b)
Compressive
c)
axial
d)
shaer
82.
In the case of thick cylinder subjected to fluid pressure, Radial stress is ___________
a)
Tensile
b)
Compressive
c)
axial
d)
shaer
83.
A thin cylinder of diameter and length subjected to an internal pressure the circumferential stress in the shell is
a)
pd/2t
b)
pd/4t
c)
pd/3t
d)
pd/t
84.
From design point of view, spherical pressure vessels are preferred over cylindrical pressure vessels because they
a)
Are cost effective in fabrication
b)
Have uniform higher circumferential stress
c)
Uniform lower circumferential stress
d)
Have a larger volume for the same quantity of material used
85.
Thin cylinders are used as____
a)
boilers
b)
furnace
c)
water tank
d)
reactors
86.
The design of a thin cylindrical shell is based on
a)
Internal pressure
b)
Diameter of shell
c)
Longitudinal stress
d)
all of these
87.
Where does the maximum hoop stress in a thick cylinder under external
pressure occur?
a)
At the outer surface
b)
At the inner surface
c)
At the mid-thickness
d)
At the 2/3rd outer radius
88.
The neutral axis of a section is an axis, at which the bending stress is
a)
Minimum
b)
Zero
c)
Maximum
d)
Infinity
89.
The beam, there will be a layer, which is neither shortened nor elongated is known as _________
a)
Neutral layer
b)
primary layer
c)
secondary layer
d)
middle layer
90.
The line of intersection of the neutral layer on a cross-section of a beam is known as
a)
neutral axis
b)
Primary axis
c)
Primary axis
d)
middle axis
91.
All layers below neutral layer are subjected to _______ stress
a)
zero
b)
Compressive
c)
tensile
d)
axial
92.
The stresses introduced by bending moment are known as
a)
Bending stresses
b)
Linear Stresses
c)
Compressive sresses
d)
Poison's ratio
93.
when a cantilever is loaded at its free end, maximum compressive stress shall develop at
a)
Centre of gravity
b)
Top fibre
c)
Neutral axis
d)
Bottom fibre
94.
The young’s modulus of steel in GPa
a)
100
b)
300
c)
400
d)
200
95.
In the theory of simply bending, the bending stress in the beam section various
a)
Linearly
b)
Parabolically
c)
Elliptically
d)
Involute
96.
The ratio of average shear stress to the maximum shear stress in a beam with a square cross-section is _________
a)
1
b)
0.6666666666666666
c)
1.5
d)
2
97.
When a solid shaft is subjected to torsion the shear stress induced in the shaft at its centre is
a)
Zero
b)
Minimum
c)
Maximum
d)
Average
98.
The shear stress at a point in a shaft subjected to a torque is __________ proportional to the applied torque
a)
Directly
b)
Indirectly
c)
same
d)
all of these
99.
When the shaft is subjected to Torsion, the shear stress is ___________ at the surface
a)
Zero
b)
Minimum
c)
Maximum
d)
Average
100.
Angle of twist "θ"of a shaft of diameter ‘d’ is __________ proportional to d^4
a)
Directly
b)
Inversily
c)
same
d)
all of these
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