Legal Metrology • 2018 • Civil Engineering Paper-II
Group I contains dimensionless parameter and Group II contains ratio
Group I: P. Mach number, Q. Reynold number, R. Weber number, S. Froude number
Group II: 1. Ratio of inertial force and gravity force, 2. Ratio of fluid velocity and velocity of sound, 3. Ratio of inertial force and viscous force, 4. Ratio of inertial force and surface tension force.
Correct match of the dimensionless parameter in Group I with Group II is
A)
P-3, Q-2, R-4, S-1
B)
P-3, Q-4, R-2, S-1
C)
P-2, Q-3, R-4, S-1
D)
P-1, Q-3, R-2, S-4
The correct choice is C (P-2, Q-3, R-4, S-1), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
The ordinate of the instantaneous Unit Hydrograph (UH) of a catchment at any time t is
A)
Difference in slope of the S-curve with effective rainfall intensity of 1cm/hr
B)
The slope of the direct runoff unit hydrograph at that time
C)
The slope of the 1-hour unit hydrograph at that time
D)
The slope of the S-curve with effective rainfall intensity of 1cm/hr
The correct choice is D (The slope of the S-curve with effective rainfall intensity of 1cm/hr), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Zero hardness of water is achieved by
A)
lime soda process
B)
excess lime treatment
C)
ion exchange treatment
D)
excess alum and lime treatment
The correct choice is C (ion exchange treatment), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
For determining the velocity of flow of underground water, the most commonly used non empirical formula is
A)
Darcy’s formula
B)
Slichter’s formula
C)
Hazen’s formula
D)
Lacy’s formula
The correct choice is A (Darcy’s formula), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
For subcritical flow in an open channel, the control section for gradually varied flow profile is
A)
at the downstream end
B)
at the upstream end
C)
at both ends
D)
at any intermediate section
The correct choice is A (at the downstream end), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
A mild-sloped channel is followed by a steep-sloped channel. The profiles of gradually varied flow in the channel are
A)
M3, S2
B)
M3, S3
C)
M2, S1
D)
M2, S2
Correct option C: M2, S1.
Legal Metrology • 2018 • Civil Engineering Paper-II
A lysimeter is used to measure
A)
Evaporation
B)
Evapotranspiration
C)
Infiltration
D)
Radiation
The correct choice is B (Evapotranspiration), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
There is a free overfall at the end of a long open channel. For a given flow rate, the critical depth is less than the normal depth. What gradually varied flow profile will occur in the channel for this flow rate?
A)
M1
B)
M2
C)
M3
D)
S1
Correct option B: M2.
Legal Metrology • 2018 • Civil Engineering Paper-II
In order to prepare 2 hour unit hydrograph from a six hour unit hydrograph which of the following method is suitable?
A)
Instantaneous unit hydrograph
B)
S – Curve method
C)
Simple unit hydrograph
D)
Synthetic unit hydrograph
The correct choice is B (S – Curve method), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
A piezometer is not used for pressure measurement in pipe when
A)
the pressure is very low
B)
velocity of fluid is high
C)
velocity of fluid is low
D)
the fluid in the pipe is high
The correct choice is B (velocity of fluid is high), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Stream function y=uy-vx represents the
A)
Free vortex motion
B)
Uniform flow inclined to x-axis
C)
Uniform flow parallel to x-axis
D)
Uniform flow parallel to y-axis
The correct choice is C (Uniform flow parallel to x-axis), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
The necessary and sufficient condition for a surface to be called as a ‘free surface’ is
A)
no stress should be acting on it
B)
tensile stress acting on it must be zero
C)
shear stress acting on it must be zero
D)
no print on it should be under any stress
Correct option C: shear stress acting on it must be zero.
Legal Metrology • 2018 • Civil Engineering Paper-II
In the Bernoulli’s equation, used in pipe flow, each term represents
A)
Energy per unit flow length
B)
Energy per unit mass
C)
Energy per unit volume
D)
Energy per unit weight
The correct choice is D (Energy per unit weight), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
A coastal city produces municipal solid waste (MSW) with high moisture content, high organic materials, low calorific value and how inorganic materials. The most effective and sustainable option for MSW management in that city is
A)
Composting
B)
Dumping in sea
C)
Incineration
D)
Landfill
The correct choice is A (Composting), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
In steady flow of a fluid,the total acceleration of any fluid particle
A)
Is never zero
B)
Is always zero
C)
Can be zero
D)
None of these
The correct choice is C (Can be zero), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
For a given discharge, the critical flow depth in an open channel depends on
A)
channel geometry only
B)
channel geometry and bed slope
C)
channel geometry, bed slope and roughness
D)
channel geometry, bed slope, roughness and Reynolds number
The correct choice is A (channel geometry only), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Two biodegradable components of municipal solid waste are
A)
plastics and wood
B)
cardboard and glass
C)
leather and tin cans
D)
food wastes and garden trimmings
Correct option D: food wastes and garden trimmings.
Legal Metrology • 2018 • Civil Engineering Paper-II
In a domestic wastewater sample, COD and BOD were measured. Generally which of the following statement is true for their relative magnitude?
A)
COD = BOD
B)
COD > BOD
C)
COD < BOD
D)
Nothing can be said
The correct choice is B (COD > BOD), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Fluids change the volume under external pressure due to
A)
plasticity
B)
viscosity
C)
compressibility
D)
none of these
The correct choice is C (compressibility), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
A polluted stream undergoes self purification in four district zones:
I. Zone of clear water
II. Zone of active decomposition
III. Zone of Degradation
IV. Zone of recovery
Correct sequence is:
A)
II, III, IV, I
B)
II, IV, III, I
C)
III, II, IV, I
D)
IV, III, II,I
Correct option C: III, II, IV, I.
Legal Metrology • 2018 • Civil Engineering Paper-II
Shear stress develops in a fluid element, if
A)
The fluid is at rest
B)
The fluid container is subjected to uniform linear acceleration
C)
The fluid is inviscid
D)
The fluid is viscous and the flow is non-uniform
The correct choice is D (The fluid is viscous and the flow is non-uniform), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
The locus of elevations that water will rise in a series of pitot tubes is called
A)
The energy grade line
B)
The hydraulic grade line
C)
The pressure head
D)
The velocity head
The correct choice is B. The sequence follows the numerical pattern described in the question, giving The hydraulic grade line.
Legal Metrology • 2018 • Civil Engineering Paper-II
Algae dies out, though fish life may survive, in a river zone, known as
A)
Zone of clear water
B)
Zone of active decomposition
C)
Zone of Degradation
D)
Zone of recovery
The correct choice is B (Zone of active decomposition), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Ground water from artesian wells
A)
contains no suspended materials
B)
contains dissolved salts
C)
may be saltish and hard
D)
all of these
The correct choice is D (all of these), consistent with standard C++ language rules.
Legal Metrology • 2018 • Civil Engineering Paper-II
Particulate matter (fly ash) carried in effluent gases from the furnaces burning fossil fuels are better removed by
A)
Cotton bag house filter
B)
Electrostatic precipitator (ESP)
C)
Cyclone
D)
Wet scrubber
The correct choice is B (Electrostatic precipitator (ESP)), consistent with standard C++ language rules.
