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UPSC Civil Service Exam Questions
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UPSC Civil Service Exam Questions
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The following methods are used for structural analysis :1. Macaulay method 2. Column analogymethod3.
Kani's method 4. Method of sectionsThose used for indeterminate structural analysis would include
2 and 3
1 and 3
1 and 2
2, 3 and 4
A 30 cm diameter friction pile is embedded 10 m into a homogeneous consolidateddeposit.
Unit adhesion developed between clay and pile shaft is 4 t/m2 and adhesion factor is 0.7. The safe load for factor of safety 2.5 will be
11.57 t
10.55 t
6.35 t
21.50 t
In case of well foundation, grip length is defined as the
depth of the bottom of the well below the maximum scour level
depth of the bottom of the well below the minimum scour level
length below the top of the well cap to the cutting edge
length between the bottom of the well cap to the cutting edge
In a third order traverse, if the standard error of ± 3" is assigned to each of the four source of errors, namely :(i) reading the vernie(ii) non-adjustment of transit(iii) sighting and(iv) setting over the station, then the total standard error of the work would be
±6"
±6.92"
±12"
±3"
Two bodies of masses m1 and m2 are communicated by a light inextensible string passing over a small smooth fixed pulley; m1 > m2. What is the acceleration of the system
g (m1 + 2m2)/(2m1 - m2)
g (m1 - m2)/(m1 + m2)
g (m1 + m2)/(m1 - m2)
g (2m1 + m2)/(m1 - 2m2)
A cantilever of constant depth carries a uniformly distributed load on the wholespan.
To make the maximum stress at all sections the same, the breadth of the section at a distance x from the free end should be proportional to
X3
x2
x
For ornamental work, which type(s) of bricks is/ are preferred ?1. Silicabricks2.
Silica limebricks3.
Bricks produced in autoclavesSelect the correct answer using the code given below
1 only
2 and 3 only
2 only
1 and 3 only
From a circular plate of diameter D, whose centre is C, another circular plate of diameter AC is cut, removed and kept over CB (in the given figure). The thickness of the plate isuniform.
The shift of the centroid due to this operation will be
D/4 to the left of C
D/4 to the right of C
D/8 to the right of C
3D/8 to the right of C
The runway length after correcting for elevation and temperature is 2845 m. If the effective gradient on runway is 0.5 per cent, then the revised runway length will be
2845 m
3130 m
2910 m
3030 m
A clay layer 5 m thick in field takes 300 days to attain 50% consolidation with condition of doubledrainage.
If the same clay layer is underlain by hard rock then the time taken to attain 50% consolidation will be
300 days
1200 days
900 days
600 days
In a three-layered soil, water flows parallel tostratification.
The thickness of the middle layer is twice that of top and bottomlayer.
The coefficient of permeability of middle layer
(2K) is twice that of top and bottom layer (K). What is the average coefficient of permeability for this flow
0.66 K
k
1.33 K
1.5 K
A symmetrical three-hinged parabolic arch of span L and rise h is hinged at springings andcrown.
It is subjected to
a. U.d.l. W throughout thespan.
Which the banding moment at a section L/4 from the left support
Zero
WL2/16
WL2/8 h
wl2/8
A three-hinged circular arch ACB is formed by two quadrants of circles AC and BC of radii 2R and R respectively with C as crown, as shown in the figure atside.
Consider the following in respect of the reactive forces developed at support A and B due to concentrated load W at theCrown.
1. Line of action RA at A is inclined as 45° to thehorizontal.
2. VA = VB = W/2 3. HB = 2 HA 4. HA = HB = W/2 Which of the above is/are correct
1 and 3
2 and 3
1, 2 and 4
4 only
The following data pertain to a sewage sample :Initial
D.O = 10 mg/lFinal
D.O. = 10 mg/1 Dilution to 1%The BOD of the given sewage sample is
8 mg/1
100 mg/1
800 mg/1
10 mg/1
A simply supported beam of span 'L' and uniform flexural rigidly EI, carries a central load 'W' and total uniformly distributed load 'W' throughout thespan.
The maximum deflection is given by
5 WL3/96 EI
5 WL3/384 EI
13 WL3/96 EI
13 WL3/384 EI
Which one of the following statements best defines a 'level surface'
A horizontal surface every element of which is normal to plumb line
A curved surface every element of which is perpendicular to the spheroidal shape of the earth
A plane surface which is perpendicular at all points to the direction of gravity
A curved surface which is perpendicular to the direction of gravity at every point
In a saturated clay layer undergoing consolidation with single drainage at its top, the pore water pressure would be the maximum at its
middle
Top
Bottom
top as well as the bottom
Consider the following statements :1. A dummy activity is artificially introduced in a network whennecessary.
2. A dummy activity consumes sometime.
3. A dummy activity is represented by a dottedarrow.
4. A dummy activity must necessarily be introduced in everynetwork.
Which of the above statements are correct
1 and 3
2, 3 and 4
1, 2 and 3
1 and 2
As per Terzaghi's equation, the bearing capacity of strip footing resting on cohesive coil
(c = 10 kN/m2) for unit depth and unit width
(assume Nc as 5.7 ) is
57 kN/m2
47 kN/m2
77 kN/m2
67 kN/m2
Which one of the following is the appropriate field test for estimating the angle of shearing resistance φ of a sand deposit
Plate load test
Electrical resistivity test
Field vane shear test
standard penetration test
Which of the following data would be required for the design of progressive type computerised traffic signal system in a series of intersection on a busy street ?1. Volume of fast moving traffic 2. Volume of pedestraintraffic3.
Volume of slow traffic 4. Approach speed of fast movingtraffic.
Select the correct answer using the codes given below
1, 2, 4 and 5
1, 2, 3 and 4
1, 3, 4 and 5
2, 3, and 5
A summit curve is formed at the intersection of a 3% upgrade and a 5%downgrade.
What is the length of the summit curve in order to provide a stopping distance of 128 m
298 m
271m
322 m
340 m
The following refer to the stability analysis of an earth dam under different conditions :1. Stability of D/S slope during steadyseepage.
2. Stability of U/S slope during suddendrawdown.
3. Stability of U/S and D/S slopes duringconstruction.
Of these statements
2 and 3 are correct
1 and 2 are correct
1 and 3 are correct
1, 2 and 3 are correct
At a cross-section of a beam, the maximum compressive stress at top is 800 kg/cm2 and its maximum tensile stress at bottom is 200 kg/cm2.
The depth of cross-section is 10 cm. The depth of the neutral axis from the top of the section is n. The n is equal to
6 cm
4 cm
8 cm
2 cm
Which one of the following related to domestic potable water quality is correct
Turbidity (on Silica scale) is 15-20 ppm or mg/lit.
Hardness (expressed as Ca CO3 equivalent) is 75-115 ppm or mg/lit
BOD is 20 ppm or mg/lit
Colour (on Cobalt scale) is 15-25 ppm or mg/lit.
The optimum number of revolutions over which concrete is required to be mixed in a mixer machine, is
10
100
20
50
Uniformity coefficient of filter sand is given by
D50/D5
D50/D10
D60/D5
D60/D10
At a certain point in a structural member, there are perpendicular stresses 80 N/mm2 and 20 N/mm2, bothtensile.
What is the equivalent stress in simple tension, according to the maximum principal strain theory ? (Poisson's ratio = 0.25)
Zero
60 N/mm2
20 N/mm2
75 N/mm2
In the schematic flownet shown in the given figure the hydraulic potential at point A is
25 m of water
15 m of water
5 m of water
12 m of water
At what distance from left support of the beam, is the shear force zero
2.5 m
1.5 M
1 m
1.25 m
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