Worksheetsquestion answer sa
Total questions: 135
Worksheet time: 45mins
Name
Class
Date
1.
What is the degree of SI of the two hinged arch?
a)
1
b)
2
c)
3
d)
4
2.
The normal thrust in an arch rib is
a)
N= H cosθ + V sinθ
b)
N= V cosθ - H sinθ
c)
N= H cosθ - V sinθ
d)
N= V cosθ + H sinθ
3.
Choose deficient arch type
a)
Hinge less arch
b)
Single hinged arch
c)
Two hinged arch
d)
Four hinged arch
4.
A parabolic three hinged arch of span L m is subjected to an u.d.l of w/m run over the entire span. Find the vertical reaction for left support.
a)
wL/2
b)
wL/8
c)
wL/16
d)
wL/24
5.
The expression for the slope of parabolic three hinged arch.
a)
Θ= 4r/l^2 (l - x)
b)
Θ= 4r/l^2 (l - 2x)
c)
Θ= 4r/l^2 x(l - 3x)
d)
Θ= 4r/l^2 x(l - 2x)
6.
The number of reactions developed in fixed arch.
a)
2
b)
6
c)
3
d)
4
7.
The case of circular arches, the following equation will be used:
a)
R^2 = x^2 – (R- yc - y)^2
b)
R^2 = x^2 – (R - yc +y)^2
c)
R^2 = x^2 +(R - yc - y)^2
d)
R^2 = x^2 + (R - yc + y)^2
8.
For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust
a)
Is increased
b)
Is decreased
c)
Remains unchanged
d)
Becomes zero
9.
Identity the arches according to the shape
a)
Circular arch
b)
Two hinged arch
c)
Single hinged arch
d)
Fixed arch
10.
The temperatures stresses developed in the three hinged arch is
a)
Maximum
b)
Minimum
c)
Negligible
d)
Zero
11.
A three hinged parabolic arch of 40m span has abutments at unequal levels. The highest point of the arch is 4m above left support and 9m above the right abutment. The arch is subjected to an UDL of 15 kN/m over its entire horizontal span. The bending moment at a point 8m from the left support.
a)
`1.3
b)
2
c)
5
d)
Zero
12.
A symmetric three hinged parabolic arch of span 40m and rise 8m carries an UDL of 30kN/m over left half of the span. The hinges are provided at the supports and at the center of the arch. Find the vertical reaction at the left abutments.
a)
450 kN
b)
150 kN
c)
250 kN
d)
375 kN
13.
A symmetric three hinged parabolic arch of span 40m and rise 8m carries an UDL of 30kN/m over left half of the span. The hinges are provided at the supports and at the center of the arch. Find the vertical reaction at the right abutments.
a)
450 kN
b)
150 kN
c)
250 kN
d)
375 kN
14.
Moment at any section of arch is denoted by
a)
Mx = Vx - Hy
b)
Mx = Vx - H
c)
Mx = µx - Hy
d)
Mx = µx - H
15.
A two hinged parabolic arch carries a udl of ‘w’ per unit run on its left half of the span. Find the horizontal thrust is
a)
H=Wl²/16 yc
b)
H=Wl³/16 yc
c)
H=Wl/16 yc
d)
H=Wl²/8 yc
16.
In case of a three pinned parabolic arch carrying a uniformly distributed load on the entire span, the bending moment will be
a)
Equal to that of a simply supported beam loaded in the same manner
b)
Maximum at quarter span
c)
Zero only at the centre
d)
Zero throughout the span
17.
Horizontal thrust of two hinged parabolic arch is given by
a)
H= 4ycx(L-x)/L^2
b)
H= x^2/z
c)
H=(∫μ y dx)/(∫y^2 dx)
d)
H= x^2
18.
The reaction locus of a two hinged semi-circular arch is
a)
Parabola
b)
Straight line
c)
Circle
d)
Hyperbola
19.
For three hinged parabolic arch Vx is sum of the vertical forces on the left hand side of the section, H is the horizontal thrust. If ‘θ’ is the angle of tangent at the point on arch with the horizontal, then the radial shear is given by
a)
Vxcosθ - Hsinθ
b)
Vx sinθ + Hcosθ
c)
Vx sinθ - Hcosθ
d)
Vx cosθ + Hsinθ
20.
A three hinged circular arch is 25 m in span with a central rise of 5m. It is loaded with a concentrated load of 10 kN at 7.5 m from the left hinge. Find the resultant reaction at right support
a)
7 kN
b)
3 KN
c)
10.26 kN
d)
8.08 kN
21.
The shape of a suspended cable under its own weight, is
a)
Parabolic
b)
Circular
c)
Catenary
d)
Trapezoidal
22.
Choose the property of cables.
a)
Stiff
b)
Rigid
c)
Not elongate
d)
Flexible
23.
The horizontal thrust in the cable is
a)
Compressive
b)
Tensile
c)
Both Tenile and Compressive
d)
Depends on load
24.
The suspension cable and the anchor cable are connected to a pulley on a tower, Tension as
a)
Only Horizontal
b)
Only Vertical
c)
Both Horizontal and Vertical
d)
Zero
25.
A light cable AB of span "L "and dip "h" subjected to uniformly distributed load of w per unit run on the horizontal span. find the vertical reaction at A left side of the cable
a)
WL
b)
wL/2
c)
wL
d)
w
26.
Stress in the Cable as
a)
T/A
b)
TA
c)
2T/A
d)
T
27.
What will be the equation used to find the length of springing at different levels
a)
(L1^2/d1)=(L2^2/d2)
b)
L1=L2^2
c)
L=2L1
d)
(L1^2/d1)=(L2^2/d1)
28.
A cable of span L and dip h is subjected to a uniformly distributed load w/m of horizontal span. find the horizontal reaction
a)
wL/2
b)
WL^2/8h
c)
W
d)
wL
29.
Total Length of the cable is
a)
L= l+(8/3* h^2/l)
b)
L= L^2/8h
c)
L= l1+8hl
d)
L=(8/3* h^2/l)
30.
ILD of statically determinate beam consists of
a)
Curve
b)
Parabola
c)
Hyperbola
d)
Straight line
31.
A cable carrying a load of 10 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the vertical reaction.
a)
500 kN
b)
600 kN
c)
750 kN
d)
850 kN
32.
A cable carrying a load of 10 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the Horizontal reaction.
a)
500 kN
b)
1200kN
c)
1563 kN
d)
1640 kN
33.
A suspension cable is suspended from two piers 196 m apart, one support being 7 m above the other. The cable carries a uniformly distributed load of 15 kN/m and has its lowest point 9 m below the lower support. The ends of the cable are attached to rollers at the top of the piers and the back stays which are straight are inclined at 30 degree to the horizontal. Determine the horizontal distance of the higher end of cable A from C lowest point.
a)
100 m
b)
120 m
c)
112 m
d)
60 m
34.
A suspension cable is suspended from two piers 196 m apart, one support being 7 m above the other. The cable carries a uniformly distributed load of 15 kN/m and has its lowest point 9 m below the lower support. The ends of the cable are attached to rollers at the top of the piers and the back stays which are straight are inclined at 30 degree to the horizontal. Determine the horizontal distance of the Lower end of cable B from C lowest point.
a)
100 m
b)
84 m
c)
112 m
d)
60 m
35.
A cable is suspended from the points A and B which are 80 m aoart horizontally and are at different levels, the point A being 5 m vertically higher than the point B and the lowest point in the cable is 10 m below A. the lowest point is C. the cable is subjected to a uniformly distributed load of 30 kN/m over the horizontal span. Horizontal distance l1= 46.863 m, Find the vertical force on VA.
a)
1000 kN
b)
994.11 kN
c)
3294.2 kN
d)
1405.89 kN
36.
A cable is suspended from the points A and B which are 80 m aoart horizontally and are at different levels, the point A being 5 m vertically higher than the point B and the lowest point in the cable is 10 m below A. the lowest point is C. the cable is subjected to a uniformly distributed load of 30 kN/m over the horizontal span. Horizontal distance l1= 46.863 m, Find the vertical force on VB.
a)
1000 kN
b)
994.11 kN
c)
3294.2 kN
d)
1405.89 kN
37.
A cable carrying a load of 20 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the Bending moment at the 25m from the left end of the cable .
a)
Zero
b)
120 kNm
c)
1500 kNm
d)
1405.89 kNm
38.
A suspension cable of span 40 m and central dip 3 m carries a UDL of 60 kN/m over the entire span. Find the length of the cable.
a)
40.6 m
b)
41 m
c)
45 m
d)
41.23 m
39.
A suspension bridge of 100 m span has two three hinged stiffening girders supported by two cables with a central dip of 10m. if three point loads of 50 kN each are placed along the center line of the roadway at 10, 20 and 30 m from left hand hinge, find the total load carried by one stiffening girder.
a)
100 kN
b)
150 kN
c)
75 kN
d)
300 kN
40.
A suspension bridge of 100 m span has two three hinged stiffening girders supported by two cables with a central dip of 10m. if three point loads of 50 kN each are placed along the center line of the roadway at 10, 20 and 30 m from left hand hinge, find the sag at 30 m from left end.
a)
10 m
b)
8.4 m
c)
9 m
d)
12 m
41.
Which type of the following arch is easy to analyze
a)
2 hinged
b)
3 hinged
c)
1 hinged
d)
fixed
42.
What is the degree of SI of the Fixed arch?
a)
3
b)
1
c)
2
d)
4
43.
A two hinged semi circular arch of radius R carries a concentrated load ‘W’ at the crown. The horizontal thrust at each support is given by
a)
H = W/2π
b)
H =3W/2π
c)
H = W/3π
d)
H = W/π
44.
The bending moment at any section of an arch is proportional to the vertical intercept between the linear arch and central line of the actual arch is
a)
Castigliano’s I theorem
b)
Castigliano’s II theorem
c)
Eddy’s theorem
d)
Betty theorem
45.
The predominate forces in the arches are
a)
Compression
b)
Shear
c)
Torsion
d)
Moment
46.
Choose more efficient arch type
a)
Hinge less arch
b)
Single hinged arch
c)
Two hinged arch
d)
Three hinged arch
47.
Arch is economical when compare to beam due to
a)
Large moment
b)
Large shear force
c)
Less moment
d)
More tension
48.
An arch is suitable for long span bridges because there is
a)
Considerable reduction in horizontal thrust
b)
Zero at horizontal thrust
c)
Reduction in shear and bending moment
d)
Considerable reduction in bending moment
49.
In a two hinged arch an increase in temperature induces
a)
No bending moment in the arch rib
b)
Uniform bending moment in the arch rib
c)
Maximum bending at the crown
d)
No shear in the arch rib
50.
Under what conditions will the bending moment in an arch be zero throughout?
a)
The arch is carries uniformly distributed load left half span
b)
The arch carries uniformly distributed load throughout the span
c)
The arch carries point load
d)
No shear in the arch rib
51.
A three hinged parabolic arch of span ‘L’ subjected to a concentrated load of ‘W’ at the quarter span from left support. The hinges are located on two abutments at the same level And the third hinge is at the mid span. Then moment at the crown is
a)
W
b)
Wl
c)
2W
d)
Zero
52.
A three hinged semi circular arch of radius ‘R’ carries a uniformly distributed load of ‘w’ over the whole span. The horizontal thrust is
a)
WR
b)
WR/2
c)
4/3π WR
d)
2/3π WR
53.
Consider the following statements:
A: In a parabolic symmetrical three-hinged arch, the bending moment at any section due to dead load is zero.
R: In the influence line diagram for moment at a section of an arch, the simply supported moment diagram and ‘Hy’ diagram have equal areas.
Of these statements
a)
Both A and R are true and R is the correct explanation of A
b)
Both A and R are true and R is the not correct explanation of A
c)
A is true but R is false
d)
A is false but R is true
54.
A three hinged parabolic arch subjected to UDL of 10 kN/m over entire span of 10 m. If the arch subjected to UDL of 2 kN/m over entire span in addition to existing load. Then the bending moment in the arch
a)
Increases
b)
Decreases
c)
Varying with time
d)
Constant
55.
A three hinged circular arch is 25 m in span with a central rise of 5m. It is loaded with a concentrated load of 10 kN at 7.5 m from the left hinge. Find the vertical reaction at left support.
a)
7 kN
b)
3 KN
c)
7.5 kN
d)
8.08 kN
56.
A three hinged circular arch is 25 m in span with a central rise of 5m. It is loaded with a concentrated load of 10 kN at 7.5 m from the left hinge. Find the vertical reaction at right support.
a)
7 kN
b)
3 KN
c)
7.5 kN
d)
8.08 kN
57.
A three hinged circular arch is 25 m in span with a central rise of 5m. It is loaded with a concentrated load of 10 kN at 7.5 m from the left hinge. Find the horizontal thrust at left support.
a)
7 kN
b)
3 KN
c)
7.5 kN
d)
8.08 kN
58.
Find the radial shear , where Vx=150 kN , θ=36°52’
a)
-60 kN
b)
60 kN
c)
70 kN
d)
-70 kN
59.
Find the normal thrust , where Vx=150 kN , θ=36°52’ , H=300 kN
a)
330 kN
b)
150 kN
c)
180 kN
d)
200 kN
60.
A symmetric three hinged parabolic arch of span 40m and rise 8m carries an UDL of 30kN/m over left half of the span. The hinges are provided at the supports and at the centre of the arch. Then horizontal thrust at the springing
a)
450 kN and 150 kN
b)
375 kN and 375 kN
c)
375 kN and 100 kN
d)
200 kN and 150 kN
61.
The cables are subjected to
a)
Moment
b)
Compression
c)
Tension
d)
Shear
62.
The shape of the cable, when loaded with uniformly distributed load throughout the span is
a)
Linear always
b)
Parabolic always
c)
Trapezoidal always
d)
Triangular
63.
The maximum dip of the cable range from
a)
L/10 to L/20
b)
L/10 to L/15
c)
L/15 to L/20
d)
L/5 to L/10
64.
The suspenders in the suspension cable subjected to a
a)
Uniformly Distributed Load
b)
Concentrated Load
c)
Uniformly Varying Load
d)
Moments
65.
Maximum tension in the cable is
a)
σ/A
b)
σ A
c)
σ A L
d)
A/σ
66.
Cable and suspension bridges are preferred for
a)
Long span
b)
Limited to 20m
c)
Short span
d)
Medium span
67.
Cables are subjected to
a)
Axial forces
b)
Eccentric loading
c)
Flexure
d)
Torque
68.
The suspension cable and the anchor cable are connected to a saddle resting on a tower, horizontal force is
a)
Zero
b)
T Cos θ
c)
T Sin θ
d)
T
69.
Maximum Tension in the cable Sq.Tmax =
a)
V+H
b)
T Cos θ
c)
V-H
d)
(V*V)+(H*H)
70.
What is the shape of ILD curve for vertical reaction at left of simply supported Beam?
a)
Triangular
b)
Circular
c)
Rectangular
d)
Trapezoidal
71.
A cable carrying a load of 20 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the vertical reaction.
a)
1000 kN
b)
800 kN
c)
1500 kN
d)
1800 kN
72.
A cable carrying a load of 20 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the Horizontal reaction.
a)
3125 kN
b)
2125 kN
c)
1500 kN
d)
1800 kN
73.
A cable is suspended from the points A and B which are 80 m aoart horizontally and are at different levels, the point A being 5 m vertically higher than the point B and the lowest point in the cable is 10 m below A. the lowest point is C. the cable is subjected to a uniformly distributed load of 30 kN/m over the horizontal span. Determine the horizontal distance of the higher end of cable A from C lowest point.
a)
46.863 m
b)
48.121 m
c)
35 m
d)
33.137 m
74.
A cable is suspended from the points A and B which are 80 m aoart horizontally and are at different levels, the point A being 5 m vertically higher than the point B and the lowest point in the cable is 10 m below A. the lowest point is C. the cable is subjected to a uniformly distributed load of 30 kN/m over the horizontal span. Determine the horizontal distance of the Lower end of cable B from C lowest point.
a)
46.863 m
b)
48.121 m
c)
35 m
d)
33.137 m
75.
A suspension cable is suspended from two piers 196 m apart, one support being 7 m above the other. The cable carries a uniformly distributed load of 15 kN/m and has its lowest point 9 m below the lower support. The ends of the cable are attached to rollers at the top of the piers and the back stays which are straight are inclined at 30 degree to the horizontal. Horizontal distance l1= 112 m, Find the vertical force on VA.
a)
1500 kN
b)
1680 kN
c)
1250 kN
d)
1600 kN
76.
A suspension cable is suspended from two piers 196 m apart, one support being 7 m above the other. The cable carries a uniformly distributed load of 15 kN/m and has its lowest point 9 m below the lower support. The ends of the cable are attached to rollers at the top of the piers and the back stays which are straight are inclined at 30 degree to the horizontal. Horizontal distance l1= 112 m, Find the vertical force on VB.
a)
1500 kN
b)
1680 kN
c)
1260 kN
d)
1600 kN
77.
A cable carrying a load of 10 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the Bending moment at the center of the cable .
a)
Zero
b)
1680 kNm
c)
1260 kNm
d)
1600 kNm
78.
A suspension cable of span 45 m and central dip 3 m carries a UDL of 60 kN/m over the entire span. Find the length of the cable.
a)
47 m
b)
45.53 m
c)
51.23 m
d)
49.5 m
79.
A suspension bridge of 100 m span has two three hinged stiffening girders supported by two cables with a central dip of 10m. if three point loads of 20 kN each are placed along the centre line of the roadway at 10, 15 and 20 m from left hand hinge, find the total load carried by one stiffening girder.
a)
60 kN
b)
20 kN
c)
30 kN
d)
120 kN
80.
A suspension bridge of 100 m span has two three hinged stiffening girders supported by two cables with a central dip of 10m. if three point loads of 50 kN each are placed along the center line of the roadway at 10, 20 and 30 m from left hand hinge, find the sag at 30 m from right end.
a)
10 m
b)
11 m
c)
8.4 m
d)
9.2 m
81.
ILD of statically indeterminate beam consists of
a)
Curved line
b)
Straight line
c)
circular
d)
Both linear and curved
82.
In influence line diagram
a)
Points remain fixed, position of load changes.
b)
Points change, position of load remain fixed
c)
Both of them changes
d)
Neither of them changes
83.
ILD of statically determinate beam consists of
a)
Curve
b)
Parabola
c)
Hyperbola
d)
Straight line
84.
Which of the following beam is a statically indeterminate beam
a)
Simply supported beam
b)
Fixed beam
c)
Over hang both side
d)
Cantilever beam
85.
The Castigliano’s theorem can be used to compute deflections
a)
Statically determinate structure
b)
For any type of structure
c)
At the point under load only
d)
For beams and frames only
86.
The degree of static indeterminacy of propped cantilever beam
a)
2
b)
1
c)
3
87.
The influence line diagram generally drawn for
a)
Unit moving moment
b)
Unit moving point load
c)
Unit moving UDL
d)
Two wheel loads
88.
Which theorem is utilized in solving the 2 hinged arch
a)
a.Maxwell’s theorem
b)
b.Castigliano’s theorem
c)
Both a & b
d)
Neither a or b
89.
What is the degree of SI of the Fixed arch?
a)
3
b)
2
c)
1
90.
What is the degree of SI of the two hinged arch?
a)
1
b)
2
c)
3
d)
4
91.
Pick the statically determinate arch
a)
Fixed arch
b)
Two hinge arch
c)
Three Hinge arch
d)
Four hinge arch
92.
The temperature stresses negligible at
a)
2 Hinged arch
b)
3 Hinged arch
c)
1 Hinged arch
d)
All the above
93.
Find the radial shear , where Vx=150 kN , θ=36°52’
a)
-60 kN
b)
60 kN
c)
70 kN
d)
-70 kN
94.
Find the normal thrust , where Vx=150 kN , θ=36°52’ , H=300 kN
a)
330 kN
b)
150 kN
c)
180 kN
d)
200 kN
95.
Pick the equation for radial shear
a)
Rx=Vxcosθ- Hsin θ
b)
Rx=Vxcosθ+ Hsin θ
c)
Rx=Vxsinθ - H cosθ
d)
Rx=Vxsinθ + H cosθ
96.
Pick the equation for normal thrust
a)
Nx=Vxcosθ- Hsin θ
b)
Nx=Vxcosθ+ Hsin θ
c)
Nx=Vxsinθ - H cosθ
d)
Nx=Vxsinθ + H cosθ
97.
If an internal stress component like shear force, bending moment or reaction component is allowed to act through a small distance thereby causing deformation of the structure, the cure of the deformed shape represents to some scale, the influence line diagram for that stress or the reaction component. The above statement is known as
a)
Macaulay’s theorem
b)
Muller- Breslau principle
c)
Castigliano’s theorem
d)
Eddy’s theorem
98.
In a two hinged arch an increase in temperature induces
a)
No bending moment in the arch rib
b)
Uniform bending moment in the arch rib
c)
Maximum bending at the crown
d)
Maximum bending moment at the crown.
99.
A parabolic symmetrical arch with hinges at center and ends carries a point load P at a distance x from left support. The arch has a span of 20m and rise 5m. What is the value of x if the left hinge reaction in inclined with a slope of two vertical to one horizontal?
a)
8m
b)
5m
c)
4m
d)
2.5m
100.
Unequal settlement in the supports of a statically determinate structure develop
a)
Reaction from support
b)
Member force
c)
No reaction
d)
Forces in limited member
101.
The degree of static indeterminacy of a fixed circular arch is
a)
One
b)
Two
c)
Three
d)
Four
102.
For a two-hinged arch, if one of the supports settles down vertically, then the horizontal thrust
a)
Is decreased
b)
Is very High
c)
Becomes zero
d)
Remains unchanged
103.
The case of circular arches, the following equation will be used:
a)
R2 = x2 – (R– yc – y)2
b)
R2 = x2 – (R – yc +y)2
c)
R2 = x2 +(R – yc – y)2
d)
R2 = x2 + (R – yc + y)2
104.
The reaction locus of a two hinged semi-circular arch is
a)
Parabola
b)
Straight line
c)
Circle
d)
Hyperbola
105.
Under what conditions will the bending moment in an arch be zero throughout?
a)
The arch is carries uniformly distributed load left half span
b)
The arch carries uniformly distributed load throughout the span
c)
The arch carries point load
106.
The normal thrust in an arch rib is
a)
N= H cosθ + V sinθ
b)
N= V cosθ - H sinθ
c)
N= H cosθ - V sinθ
d)
N= V cosθ + H sinθ
107.
Moment at any section of arch is denoted by
a)
Mx = Vx - Hy
b)
Mx = Vx - H
c)
Mx = µx - Hy
d)
Mx = µx - H
108.
A parabolic three hinged arch of span L m is subjected to an u.d.l of w/m run over the entire span. Find the horizontal thrust for left support.
a)
wL2/2yc
b)
wL2/8yc
c)
wL2/16yc
d)
wL2/32yc
109.
A parabolic three hinged arch of span L m is subjected to an u.d.l of w/m run over the entire span. Find the vertical reaction for left support.
a)
wL/2
b)
wL/8
c)
wL/16
d)
wL/32
110.
A three hinged semi circular arch of radius ‘R’ carries a uniformly distributed load of ‘w’ over the whole span. The horizontal thrust is
a)
WR
b)
WR/2
c)
4/3π WR
d)
2/3π WR
111.
What is the degree of SI of the two hinged arch?
a)
1
b)
2
c)
3
d)
4
112.
The normal thrust in an arch rib is
a)
N= H cosθ + V sinθ
b)
N= V cosθ - H sinθ
c)
N= H cosθ - V sinθ
d)
N= V cosθ + H sinθ
113.
Choose deficient arch type
a)
Hinge less arch
b)
Single hinged arch
c)
Two hinged arch
d)
Four hinged arch
114.
A parabolic three hinged arch of span L m is subjected to an u.d.l of w/m run over the entire span. Find the vertical reaction for left support.
a)
wL/2
b)
wL/8
c)
wL/16
d)
wL/24
115.
The expression for the slope of parabolic three hinged arch.
a)
Θ= 4r/l^2 (l - x)
b)
Θ= 4r/l^2 (l - 2x)
c)
Θ= 4r/l^2 x(l - 3x)
d)
Θ= 4r/l^2 x(l - 2x)
116.
The number of reactions developed in fixed arch.
a)
2
b)
6
c)
3
d)
4
117.
The case of circular arches, the following equation will be used:
a)
R^2 = x^2 – (R- yc - y)^2
b)
R^2 = x^2 – (R - yc +y)^2
c)
R^2 = x^2 +(R - yc - y)^2
d)
R^2 = x^2 + (R - yc + y)^2
118.
For a symmetrical two hinged parabolic arch, if one of the supports settles horizontally, then the horizontal thrust
a)
Is increased
b)
Is decreased
c)
Remains unchanged
d)
Becomes zero
119.
Identity the arches according to the shape
a)
Circular arch
b)
Two hinged arch
c)
Single hinged arch
d)
Fixed arch
120.
The temperatures stresses developed in the three hinged arch is
a)
Maximum
b)
Minimum
c)
Negligible
d)
Zero
121.
A three hinged parabolic arch of 40m span has abutments at unequal levels. The highest point of the arch is 4m above left support and 9m above the right abutment. The arch is subjected to an UDL of 15 kN/m over its entire horizontal span. The bending moment at a point 8m from the left support.
a)
`1.3
b)
2
c)
5
d)
Zero
122.
A symmetric three hinged parabolic arch of span 40m and rise 8m carries an UDL of 30kN/m over left half of the span. The hinges are provided at the supports and at the center of the arch. Find the vertical reaction at the left abutments.
a)
450 kN
b)
150 kN
c)
250 kN
d)
375 kN
123.
A symmetric three hinged parabolic arch of span 40m and rise 8m carries an UDL of 30kN/m over left half of the span. The hinges are provided at the supports and at the center of the arch. Find the vertical reaction at the right abutments.
a)
450 kN
b)
150 kN
c)
250 kN
d)
375 kN
124.
Moment at any section of arch is denoted by
a)
Mx = Vx - Hy
b)
Mx = Vx - H
c)
Mx = µx - Hy
d)
Mx = µx - H
125.
A two hinged parabolic arch carries a udl of ‘w’ per unit run on its left half of the span. Find the horizontal thrust is
a)
H=Wl²/16 yc
b)
H=Wl³/16 yc
c)
H=Wl/16 yc
d)
H=Wl²/8 yc
126.
In case of a three pinned parabolic arch carrying a uniformly distributed load on the entire span, the bending moment will be
a)
Equal to that of a simply supported beam loaded in the same manner
b)
Maximum at quarter span
c)
Zero only at the centre
d)
Zero throughout the span
127.
Horizontal thrust of two hinged parabolic arch is given by
a)
H= 4ycx(L-x)/L^2
b)
H= x^2/z
c)
H=(∫μ y dx)/(∫y^2 dx)
d)
H= x^2
128.
The reaction locus of a two hinged semi-circular arch is
a)
Parabola
b)
Straight line
c)
Circle
d)
Hyperbola
129.
For three hinged parabolic arch Vx is sum of the vertical forces on the left hand side of the section, H is the horizontal thrust. If ‘θ’ is the angle of tangent at the point on arch with the horizontal, then the radial shear is given by
a)
Vxcosθ - Hsinθ
b)
Vx sinθ + Hcosθ
c)
Vx sinθ - Hcosθ
d)
Vx cosθ + Hsinθ
130.
A three hinged circular arch is 25 m in span with a central rise of 5m. It is loaded with a concentrated load of 10 kN at 7.5 m from the left hinge. Find the resultant reaction at right support
a)
7 kN
b)
3 KN
c)
10.26 kN
d)
8.08 kN
131.
The shape of a suspended cable under its own weight, is
a)
Parabolic
b)
Circular
c)
Catenary
d)
Trapezoidal
132.
Choose the property of cables.
a)
Stiff
b)
Rigid
c)
Not elongate
d)
Flexible
133.
The horizontal thrust in the cable is
a)
Compressive
b)
Tensile
c)
Both Tenile and Compressive
d)
Depends on load
134.
The suspension cable and the anchor cable are connected to a pulley on a tower, Tension as
a)
Only Horizontal
b)
Only Vertical
c)
Both Horizontal and Vertical
d)
Zero
135.
A cable carrying a load of 10 KN/m of horizontal span , is stretched between supports 100 meters apart. The support are at the same level and the central dip is 8 meters. Find the Bending moment at the center of the cable .
a)
Zero
b)
1680 kNm
c)
1260 kNm
d)
1600 kNm
100 %