Civil Engineering Test Page = 2

Civil Engineering Question Answers Competitive Exams Online MCQ Quiz Test Page = 2

Civil Engineering (CE) 2

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Question 1
Well found ilion are omrnoflIy used as loundation for the following structures
A
Water tanks
B
Bridges
C
Buildings
D
Reciprocating machines
Question 2
The centre of presiirc ola liquid on a plane surface immersed vertically in a static body of liquid, always lies below the centroid ol the surface area, because
A
In liquids the pressure acting is same in all directions
B
there is no shear stress in liquids at rest
C
the liquid pressure is constant over depth
D
the liquid pressure increases linearly with depth
Question 3
One of the following statements is true with regards to bodies that float or are submerged in liquids:
A
For a body wholly submerged in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body
B
For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body
C
For a body floating in a liquid the stability is CflS LI red if the centre of buoyany and the centre of gravity, regardless of the relative positions of the centre of L’uoancy and gravity
D
For a body floating in a liquid the stability is ensured lithe centre of buoyancy is below the Centre 01 grwity and the rnetaccntre is above both the centres of gravity and buoyancy.
Question 4
The kinetic cnergy correct ion factor kr a fully developed larninir flow through a circular pipe is
A
1.00
B
1.33
C
2.00
D
1 .50
Question 5
While deriving an expression for loss of head due to a sudden expansion in a pipe, in addition to the continuity and impulse - momentum equatio,, one of the following assumptions is made:
A
Head loss due to friction is equal to the head loss in eddying motion
B
The mean pressure in eddying fluid is equal to the downstream pressure
C
The mean pressure in eddying fluids is equal to the upstream pressure
D
Head lost in eddies is neglected
Question 6
A hydraulic turbine develops a power on 10 metric horse power while running at a speed of 100 revolLibons per minute, under a head of 40 m. Its specific speed is nears to one of the fo11owitg
A
100
B
628
C
523
D
314
Question 7
A hvetograph is a graph representing
A
rainfall volume with time
B
rainfall intensity with time
C
rainfall intensity with duration
D
rainfall intensity over an area
Question 8
Mukingham method for routing of flood
A
is used for routing floods through reservoirs
B
is a method of routing that uses continuity and momentum equations
C
is a hydrologic method of routing floods through streams
D
is one is which only energy equation is used
Question 9
Both Reynolds and Froude numbers assume significance in one of following examples:
A
Motion of submarine at large depths
B
Motion of ship in deep seas
C
Cruising of a missile in air
D
Flow over spillways
Question 10
For a ‘best’ symmetrical trapezoidal section of an open channel with a given area of section and side slopes, one of the following statements holds true:
A
Half the top width is equal to one of the side slope
B
Half the top width plus the bottom width is equal to both the side slopes put together
C
Water depth is equal to half bottom width
D
Hydraulic mean depth is equal to half the top width
Question 11
Pathogens are usually removed by
A
chemical precipitation
B
sedimentation
C
activated sludge process
D
chlorination
Question 12
The ‘sag’ in the dissolved oxygen curve results because
A
it is a function of the rate of addition of oxygen to the stream
B
it is a function of the rate of depletion of oxygen from the stream
C
it is a function of both addition and depletion of oxygen from the stream
D
the rate of addition is linear but the rate of depletion is non-linear.
Question 13
Design parameters for rapid mixing units are
A
velocity gradient and the volume of mixing basin
B
viscosity and velocity gradient
C
viscosity, velocity gradient and the volume of the mixing basin
D
detention time and viscosity of water
Question 14
The absorbent most commonly used in water and waste treatment is
A
Sand of grain size from 0.1 to 2 mm
B
Activated carbon granules of size 0.1 to 2 mm
C
Ordinary wood shavings of fine size
D
Coal-tar
Question 15
Among the following disinfectants of waste water, the one that is most commonly used is
A
Chlorine dioxide
B
Chlorine
C
Ozone
D
UV-radiation
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