The use of mineral admixtures in concrete primarily improves
Anonymous Quiz
13%
Early strength
17%
Hydration rate
57%
Long-term durability
13%
Initial setting time
Which cement is MOST suitable for marine structures subjected to chloride attack?
Anonymous Quiz
4%
Ordinary Portland cement
27%
Rapid hardening cement
21%
Low heat cement
48%
Portland pozzolana cement
❤7
In time–cost optimization, the cost slope of an activity represents
Anonymous Quiz
70%
Increase in cost per unit reduction in time
11%
Total crashing cost
13%
Increase in duration per unit cost
7%
Decrease in duration per unit cost
In confined aquifers, the water level observed in a piezometer represents
Anonymous Quiz
8%
Water table
38%
Pressure head only
46%
Piezometric surface
8%
Capillary rise
The horizontal distance between two contour lines represents
Anonymous Quiz
21%
Vertical interval
8%
Reduced level
33%
Slope of ground
38%
Elevation difference
❤1
In a fixed beam, the points of contraflexure depend mainly on
Anonymous Quiz
35%
Load distribution
20%
Span length only
23%
Material properties
23%
Support reactions
Autogenous shrinkage in concrete occurs mainly due to
Anonymous Quiz
6%
Drying of surface
84%
Chemical shrinkage during hydration
8%
Temperature variation
2%
Carbonation
An activity having zero free float but non-zero total float indicates that
Anonymous Quiz
10%
Activity is critical
67%
Successor activity is critical
18%
Activity can delay project
5%
Project duration is fixed
Trickling filters are classified as
Anonymous Quiz
80%
Biological attached growth systems
8%
Chemical treatment units
8%
Primary treatment units
4%
Physical treatment units
🏆1
Theodolite least count mainly depends on
Anonymous Quiz
40%
Telescope magnification
23%
Diameter of circle
35%
Number of verniers
2%
Type of tripod
In the force method, the degree of static indeterminacy is equal to
Anonymous Quiz
12%
Number of joints
67%
Number of redundants
13%
Number of members
8%
Number of supports
❤1
Sulphate attack in concrete first affects
Anonymous Quiz
44%
Calcium silicate hydrate
12%
Calcium hydroxide
40%
Tricalcium aluminate
5%
Dicalcium silicate
❤1
Independent float becomes zero when
Anonymous Quiz
8%
Total float is zero
8%
Free float is zero
15%
Successor event is critical
68%
Earliest and latest times coincide for all related events
🏆1
The formation of chloramines during water disinfection results in
Anonymous Quiz
13%
Longer lasting residual
17%
Higher oxidation potential
11%
Faster disinfection
60%
Reduced taste and odor control
If magnetic bearing is greater than true bearing, then magnetic declination is
Anonymous Quiz
25%
Easterly
29%
Zero
21%
Variable
25%
Westerly
❤1
In virtual work method, the unit load must be applied
Anonymous Quiz
2%
In direction of internal force
7%
At fixed support
88%
At the point and in the direction of required displacement
3%
At centroid of structure
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