Legal Metrology • Civil Engineering Paper-III
The pressure acting on the stones in stone masonry construction should be—
A)
Along the direction of bedding planes
B)
At 45° to the direction of bedding planes
C)
At 60° to the direction of bedding planes
D)
Perpendicular to the direction of bedding planes
In the context of Civil Engineering, the most appropriate and technically accurate answer is 'At 60° to the direction of bedding planes' (Option C).
Legal Metrology • Civil Engineering Paper-III
The equation r = C + o tan @ is given by
A)
Rankine
B)
Coulomb
C)
Coleman
D)
Mohr
Mohr’s failure criterion is represented by r=c+σtanφ in the usual Mohr-circle form.
Legal Metrology • Civil Engineering Paper-III
What is the intensity of active earth pressure at a depth of 10.0 meters in dry sand with an angle of shearing resistance of 30 degrees and a unit weight of 18 KN/m3?
A)
45 kN/m2
B)
60 kN/m2
C)
75 kN/m2
D)
90 kN/m2
K_a=tan²(45−30/2)=1/3, so σ_h=K_aγz=(1/3)(18)(10)=60 kN/m².
Legal Metrology • Civil Engineering Paper-III
Which constituent of the cement, upon addition of water, sets and hardens first?
A)
tri-calcium silicate
B)
tri-calcium aluminate
C)
di-calcium silicate
D)
free lime
Option B correctly answers the question regarding Civil Engineering.
Legal Metrology • Civil Engineering Paper-II
The equation gz + p/ρ + v²/2 = constant along a stream line holds true for
A)
Steady, frictionless, compressible fluid
B)
Steady, uniform, incompressible fluid
C)
Steady, frictionless, incompressible fluid
D)
unsteady incompressible fluid
Bernoulli’s equation in the given form requires steady, incompressible, frictionless flow along a streamline.
Legal Metrology • Civil Engineering Paper-II
A venturi meter having a throat diameter of 0.1 m is used to estimate the flow rate of a horizontal pipe having a diameter of 0.2 m. For an observed pressure difference of 2 m of water head and coefficient of discharge equal to unity, assuming that the energy losses are negligible; the flow rate (in m³/s) through the pipe is approximately equal to
A)
0.500
B)
0.150
C)
0.050
D)
0.015
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is '0.150' (Option B).
Legal Metrology • Civil Engineering Paper-II
Match Column X with Column Y: (P)-IV, (Q)-II, (R)-V, (S)-I, (T)-III. Which one of the following combinations is correct?
A)
(P)-(IV), (Q)-(II), (R)-(I), (S)-(V), (T)-(III)
B)
(P)-(III), (Q)-(IV), (R)-(I), (S)-(V), (T)-(II)
C)
(P)-(V), (Q)-(II), (R)-(I), (S)-(III), (T)-(IV)
D)
(P)-(II), (Q)-(IV), (R)-(V), (S)-(I), (T)-(III)
In the context of Civil Engineering, the most appropriate and technically accurate answer is '(P)-(IV), (Q)-(II), (R)-(I), (S)-(V), (T)-(III)' (Option A).
Legal Metrology • Civil Engineering Paper-II
Shear stress in the Newtonian fluid is proportional to
A)
Pressure
B)
Strain
C)
Strain rate
D)
The inverse of the velocity
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is 'Strain rate' (Option C).
Legal Metrology • Civil Engineering Paper-II
A triangular direct runoff hydrograph due to a storm has a time base of 90 hours. The peak flow of 60 m³/s occurs at 20 hours from the start of the storm. The area of catchment is 300 km². The rainfall excess of the storm (in cm), is
A)
5.40
B)
2.00
C)
3.24
D)
6.48
In the context of Civil Engineering, the most appropriate and technically accurate answer is '2.00' (Option B).
Legal Metrology • Civil Engineering Paper-II
A laboratory model of a river is built to geometric scale of 1:100. The fluid used in the model is oil of mass density 900 kg/m³. The highest flood in the river is 10,000 m³/s. The corresponding discharge in the model shall be
A)
0.095 m³/s
B)
0.100 m³/s
C)
0.105 m³/s
D)
10.5 m/s
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is '0.105 m³/s' (Option C).
Legal Metrology • Civil Engineering Paper-II
Dickens formula predicts maximum flood discharge, Q, in terms of the area, A, and the co-efficient, c, as Q = cAⁿ. The value of n is
A)
0.25
B)
0.50
C)
0.67
D)
0.75
In the context of Civil Engineering, the most appropriate and technically accurate answer is '0.25' (Option A).
Legal Metrology • Civil Engineering Paper-II
Two flow patterns are represented by their stream functions ‘ψ₁’ and ‘ψ₂’ as given below: ψ₁ = αxy, ψ₂ = 2xy. If these two patterns are superimposed on one another, the resulting streamline pattern can be represented by one of the following
A)
A family of parallel straight lines
B)
A family of circles
C)
A family of parabolas
D)
A family of hyperbolas
The resulting stream function ψ = ψ1 - ψ2 (or superimposition logic) forms a mathematical family of hyperbolas in 2D flow.
Legal Metrology • Civil Engineering Paper-II
A very wide rectangular channel is designed to carry a discharge of 5 m³/s per meter width. The design is based on the Manning’s equation with the roughness coefficient obtained from the grain size using Strickler’s equation and results in a normal depth of 1.0 m. By mistake, however, the engineer used the grain diameter in mm in the Strickler’s equation instead of in meter. What should be the correct normal depth?
A)
0.32m
B)
0.50m
C)
2.00m
D)
3.20m
In the context of Mechanical Engineering, the most appropriate and technically accurate answer is '0.32m' (Option A).
Legal Metrology • Civil Engineering Paper-II
The potable water is prepared from turbid surface water by adopting the following treatment sequence:
A)
Turbid surface water → Coagulation → Flocculation → Sedimentation → Filtration → Disinfection → Storage & Supply
B)
Turbid surface water → Disinfection → Flocculation → Sedimentation → Filtration → Coagulation → Storage & Supply
C)
Turbid surface water → Filtration → Sedimentation → Disinfection → Flocculation → Storage & Supply
D)
Turbid surface water → Sedimentation → Coagulation → Filtration → Disinfection → Storage & Supply
Conventional potable-water treatment is coagulation → flocculation → sedimentation → filtration → disinfection.
Legal Metrology • Civil Engineering Paper-II
The plan area of a reservoir is 1 km². The water level in the reservoir is observed to decline by 20 cm in a certain period. During this period the reservoir receives a surface inflow of 10 hectare-meters, and 20 hectare-meters are abstracted from the reservoir for irrigation and power. The pan evaporation and rainfall recorded during the same period at a nearby meteorological station are 12 cm and 3 cm respectively. The calibrated pan factor is 0.7. The seepage loss from the reservoir during this period in hectare-meters is
A)
0.0
B)
1.0
C)
2.4
D)
4.6
In the context of Civil Engineering, the most appropriate and technically accurate answer is '2.4' (Option C).
Legal Metrology • Civil Engineering Paper-II
The average surface area of reservoir in the month of June is 20 km². In the same month, the average rate of inflow is 10 m³/s, outflow rate is 15 m³/s, monthly rainfall is 10 cm, monthly seepage loss is 1.8 cm and the storage change is 16 million m³. The evaporation (in cm) in that month is
A)
46.8
B)
136.0
C)
13.6
D)
23.4
In the context of Civil Engineering, the most appropriate and technically accurate answer is '46.8' (Option A).
Legal Metrology • Civil Engineering Paper-II
A tropical cyclone in a northern hemisphere is a wind stream with
A)
High pressure zone of anti-clockwise rotation
B)
High pressure zone of clockwise rotation
C)
Low pressure zone of anti-clockwise rotation
D)
Low pressure zone of clockwise rotation
In the context of Civil Engineering, the most appropriate and technically accurate answer is 'High pressure zone of clockwise rotation' (Option B).
Legal Metrology • Civil Engineering Paper-II
The microbial quality of treated piped water supplies is monitored by
A)
Microscopic examination
B)
Plate count of heterotrophic bacteria
C)
Coliform MPN test
D)
Identification of all pathogens
In the context of Civil Engineering, the most appropriate and technically accurate answer is 'Plate count of heterotrophic bacteria' (Option B).
Legal Metrology • Civil Engineering Paper-II
Water flows through a 100 mm diameter pipe with a velocity of 0.015 m/sec. If the kinematic viscosity of water is 1.13 x 10⁻⁶ m²/sec, the friction factor of the pipe material is
A)
0.0015
B)
0.032
C)
0.037
D)
0.048
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is '0.032' (Option B).
Legal Metrology • Civil Engineering Paper-II
Bernoulli’s equation is applicable for
A)
Viscous and compressible fluid flow
B)
Inviscid and compressible fluid flow
C)
Inviscid and incompressible fluid flow
D)
viscous and incompressible fluid flow
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is 'Inviscid and incompressible fluid flow' (Option C).
Legal Metrology • Civil Engineering Paper-II
The top width and the depth of flow in a triangular channel were measured as 4 m and 1 m, respectively. The measured velocities on the centre line at the water surface, 0.2 m and 0.8 m below the surface are 0.7 m/s, 0.6 m/s and 0.4 m/s respectively. Using two-point method of velocity measurement, the discharge (in m³/s) in the channel is
A)
1.4
B)
1.2
C)
1.0
D)
0.8
In the context of Civil Engineering, the most appropriate and technically accurate answer is '0.8' (Option D).
Legal Metrology • Civil Engineering Paper-II
On an immersed body in a flowing fluid, the lift force is
A)
due to buoyant force
B)
always in the opposite direction to gravity
C)
due to weak phenomenon
D)
the dynamic fluid force component normal to approach velocity
Based on established principles in Mechanical Engineering, the correct and most clinically/technically appropriate choice is 'always in the opposite direction to gravity' (Option B).
Legal Metrology • Civil Engineering Paper-II
The Muskingum model of routing a flood through a stream reach is expressed as O₂ = K₁I₁ + K₂I₂ + K₃O₁, where K₁, K₂, and K₃ are the routing coefficients for the concerned reach, I₁ and I₂ are the inflows to the reach, O₁ and O₂ are the outflows from the reach corresponding to time steps 1 and 2 respectively. The sum of K₁, K₂, and K₃ of the model is
A)
-1
B)
-0.5
C)
0.5
D)
1
In the context of Civil Engineering, the most appropriate and technically accurate answer is '1' (Option D).
Legal Metrology • Civil Engineering Paper-II
In a river, discharge is 173 m³/s; water surface slope is 1 in 6000; and stage at the gauge station is 10.0 m. If during a flood, the stage at the gauge station is same and the water surface slope is 1 in 2000, the flood discharge in m³/s, is approximately
A)
371
B)
100
C)
519
D)
300
In the context of Civil Engineering, the most appropriate and technically accurate answer is '371' (Option A).
Legal Metrology • Civil Engineering Paper-II
For a flow of 5.7 MLD (million litres per day) and a detention time of 2 hours, the surface area of a rectangular sedimentation tank to remove all particles having settling velocity of 0.33 mm/s is
A)
20 m²
B)
100 m²
C)
200 m²
D)
400 m²
In the context of Civil Engineering, the most appropriate and technically accurate answer is '100 m²' (Option B).
