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Civil Engineering MCQs

Q:

What is the last step in chain surveying?

A) Reconnaissance B) Marking
C) Fixing D) Running survey lines
 
Answer & Explanation Answer: D) Running survey lines

Explanation: After having completed the preliminary work, the chaining may be started from the base line. The work in running a survey line is twofold, to chain the line and to locate the adjacent details.

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

7044
Q:

Plasticizers are used in situations ___________

A) Where high degree of workability is required B) Where medium degree of workability is required
C) Where very low degree of workability is required D) Where low degree of workability is required
 
Answer & Explanation Answer: A) Where high degree of workability is required

Explanation: The decrease in the water/cement ratio enhances the concrete’s strength and longevity. Plasticizers are sometimes used in mass concrete to lower the cement content and hydration heat. Where low degree of workability is required like Deep beams, column and beam junctions.

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3365
Q:

Which of the below property of aggregates is not desirable?

A) Smooth texture B) Well graded
C) Angular shape D) Smaller size
 
Answer & Explanation Answer: C) Angular shape

Explanation: Aggregates should provide space for cement paste so as to lubricate the area. The parameters like texture, size, shape, grading are to be considered. Larger size, cubical, round and rough textured aggregates are preferred.

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2194
Q:

If one of the vernier is at 0° then another vernier reading shows / also shows ______

A) 90° B) 0°
C) 180° D) 45°
 
Answer & Explanation Answer: C) 180°

Explanation: Turning the upper and lower plates in opposite directions till the zero of the one of the vernier is against the zero of the scale. Next clamp the plates together by upper clamp and lower clamp and bring the two zeros into exact coincidence by turning upper tangent screw. Now when we take reading on another vernier it should be 180°, if there is no instrument error.

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

2025
Q:

The highest CBR number is required for __________

A) Pavement B) Sub grade
C) Sub base D) Base
 
Answer & Explanation Answer: B) Sub grade

Explanation: CBR number decreases with an increase in height, the soil requires the highest CBR and the pavement requires the lowest CBR.

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2007
Q:

Convert 22°30? whole circle bearings to quadrant bearings?

A) 180 – 22°30 B) 22°30
C) 360 – 22°30 D) 270 – 22°30
 
Answer & Explanation Answer: B) 22°30

Explanation: Reduced bearing = Whole circle bearing if R.B is less than 90°. Therefore here R.B = W.C.B = N 22°30’E.

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

2003
Q:

The blanket in earth dam is provided ___________________

A) at the ground level on u/s side B) at the ground level on the d/s side
C) at the ground level of the D/s side of the dam D) on the D/s slope
 
Answer & Explanation Answer: A) at the ground level on u/s side

Explanation: A blanket of relatively impervious material may be placed on the upstream face. Since homogenous earth dam poses the problems of seepage, a homogenous section is generally added with an internal drainage system. This keeps the seepage line well within the body of the dam.

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1887
Q:

The shrinkage of concrete in prestressed members results in ___________

A) Shortening B) Elongation
C) Bulking D) Stressing
 
Answer & Explanation Answer: A) Shortening

Explanation: The shrinkage of concrete in prestressed members is due to the gradual loss of moisture which results in changes in volume, rich mixes exhibit relatively greater shrinkage than lean mixes since the contraction of the cement gel increases with the cement content, the shrinkage also depends upon the degree of hardening of the concrete at the commencement of drying and the shrinkage of concrete in prestressed members results in a shortening of tensioned wires and hence contributes to the loss of stress.

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1872