Legal Metrology β’ Paper-III
The net ultimate bearing capacity of the soil is 25t/m2 and density 1.7t/m2. The safe bearing capacity at 1m below ground surface taking a FOS = 2.5 will be
A)
10 t/m2
B)
11.7 t/m2
C)
25 t/m2
D)
62.5 t/m2
Correct option: B β 11.7 t/m2. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Concrete can be pumped up to a distance of ______ without any loss of its properties
A)
30 m
B)
50 m
C)
100 m
D)
350 m
Correct option: C β 100 m. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
The stopping distance of an aircraft is given by
A)
V2 / 125f
B)
V2 / 127R
C)
V / 125 f
D)
V2 / 25.5d
Correct option: A β V2 / 125f. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Quick sand condition occurs when
A)
the void ratio of the soil becomes 1.0
B)
the upward seepage pressure in soil becomes zero
C)
the upward seepage pressure in soil becomes equal to the saturated unit weight of the soil
D)
the upward seepage pressure in soil becomes equal to the submerged unit weight of the soil
Correct option: C β the upward seepage pressure in soil becomes equal to the saturated unit weight of the soil. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
The rise and fall method of levelling provides a complete check on
A)
Back sight
B)
Fore sight
C)
Intermediate sight
D)
All of these
The rise-and-fall method provides a full arithmetic check of the leveling observations.
Legal Metrology β’ Paper-III
When a number of roads are meeting at a point and only one of the roads is important, then the suitable shape of rotary is
A)
Circular
B)
Elliptical
C)
Tangent
D)
Turbine
A turbine rotary is suited to a rotary where one approach is dominant.
Legal Metrology β’ Paper-III
Water retentively for brick masonry should not be less than
A)
50 %
B)
60 %
C)
70 %
D)
80%
Correct option: C β 70 %. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Which of the following is not a repair dock
A)
Floating dock
B)
Lift dock
C)
Marine railway
D)
Wet dock
Correct option: D β Wet dock. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Coefficient of curvature of a well graded gravel is
A)
Less than 1
B)
Greater than 6
C)
Lies between 1 and 3
D)
Lies between 3 and 6
For a well-graded soil, Cu is greater than 4 and Cc lies between 1 and 3; the option matches the stated range.
Legal Metrology β’ Paper-III
If οis the angle of deflection of a simple curve of radius R, the length of the curve is:
A)
ο°Rο / 900
B)
ο°Rο / 1800
C)
ο°Rο / 2700
D)
ο°Rο / 3600
Correct option: B β ο°Rο / 1800. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Shear strength parameters of soil includes
A)
Cohesion and friction angle of soil
B)
Cohesion and void ratio of soil
C)
Friction angle and void ratio of soil
D)
None of these
Correct option: A β Cohesion and friction angle of soil. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
As per IRC : 67-2001, a traffic sign indicating the Speed Limit on a road should be of
A)
circular shape with white background and red border
B)
triangular shape with white background and red border
C)
triangular shape with red background and white border
D)
circular shape with red background and white border
Correct option: A β circular shape with white background and red border. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
As per the Indian Standard soil classification system, a sample of silty clay with liquid limit of 40% and plasticity index of 28% is classified as
A)
CH
B)
CI
C)
CL
D)
CL-ML
Using LI=(w-PL)/(LL-PL), 0.5=(40-25)/(LL-25), giving LLβ55%;
Legal Metrology β’ Paper-III
In curves, a chainage of 370 + 10 implies
A)
370.10 m
B)
370 chains and 10 links
C)
370 links and 10 chains
D)
None of these
Correct option: A β 370.10 m. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
An undisturbed soil sample has a plastic limit of 25%, a natural moisture content of 40% and a liquidity index of 50%. Its liquid limit is
A)
50%
B)
55%
C)
60%
D)
75%
Using LI=(w-PL)/(LL-PL), 0.5=(40-25)/(LL-25), giving LLβ55%;
Legal Metrology β’ Paper-III
While driving at a speed of 30kmph (with available friction of 0.4) down the grade,the driver requires a braking distance twice that required for stopping the vehicle when he travels up the same grade. The grade is
A)
7%
B)
13.3%
C)
30%
D)
33.3%
Correct option: B β 13.3%. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Negative skin friction in a soil is considered when the pile is constructed through a
A)
fill material
B)
dense coarse sand
C)
over consolidated stiff clay
D)
dense fine sand
Negative skin friction develops when surrounding soil settles relative to a pile, commonly in compressible fill.
Legal Metrology β’ Paper-III
A river is an obstacle to
A)
Chainingbut not ranging.
B)
Ranging but not chaining.
C)
Both chaining and ranging.
D)
None of these
Correct option: A β Chainingbut not ranging.. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Rich cement mortars are more liable to cracking as compared to lean mortars because rich mortars have
A)
High shrinkage
B)
Less strength
C)
Both (a) & (b)
D)
None of these
Correct option: A β High shrinkage. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Direct cost of the project is due to
A)
Delaying project
B)
Establishment churges
C)
Loss or gain of project
D)
Men power and material cost
Correct option: D β Men power and material cost. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
The slope of the stair should not be flatter than
A)
10o
B)
15o
C)
20o
D)
250
Building codes/geometric guidance require stairs to be steeper than the stated lower limit; 20Β° is the applicable choice here.
Legal Metrology β’ Paper-III
Aggregate impact value indicates which one of the following property of aggregates?
A)
Durability
B)
Toughness
C)
Hardness
D)
Strength
Correct option: B β Toughness. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
Camber on highway pavement is provided to take care of
A)
Centrifugal force
B)
Drainage
C)
Sight Distance
D)
Off-tracking
Correct option: B β Drainage. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
The minimum number of satellites needed for a GPS to determine its position precisely is
A)
2
B)
3
C)
4
D)
24
Correct option: C β 4. This matches the standard definition/result for the stated question.
Legal Metrology β’ Paper-III
In a shear box test, the failure plane is the
A)
Weakest plane
B)
Horizontal plane
C)
Vertical plane
D)
Major principal plane
In a direct shear box test, failure is forced along the predefined horizontal plane.
