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Collegedunia Interview Questions and Answers

Updated 4 Mar 2025

Q1. Dou you know ADB?Did you completed any highway project of ADB funded?What is the Major ADB highlites Environmental Issues related to Highway construction project?

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Q2. What is length of slump rod

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Q3. What is workability

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Q4. Height of slump cone

Ans.

The height of a slump cone is a critical measurement used in testing the workability of concrete.

  • The height of a slump cone is typically 12 inches (30 cm)

  • The cone is filled with concrete in three layers, each layer tamped with a rod 25 times

  • After filling, the cone is lifted and the difference in height between the top of the cone and the highest point of the slumped concrete is measured

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Q5. Uper dia of cone

Ans.

The upper dia of a cone refers to the diameter of the top circular base of the cone.

  • The upper dia of a cone is equal to the diameter of the top circular base of the cone.

  • It is important to measure the upper dia accurately for quality control purposes.

  • For example, in highway construction, the upper dia of a cone may be measured to ensure proper compaction of materials.

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Q6. Lower dia of cone

Ans.

The lower diameter of a cone is the diameter of the circular base of the cone.

  • The lower diameter of a cone is also known as the base diameter.

  • It is the distance across the circular base of the cone.

  • To find the lower diameter, measure the widest part of the base of the cone.

  • For example, if a cone has a base diameter of 10 cm, the lower diameter is 10 cm.

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Q7. Dia of rod

Ans.

The diameter of a rod is the distance across the center of the rod, measured in millimeters or inches.

  • The diameter of a rod is typically measured using a caliper or micrometer.

  • It is important to measure the diameter accurately to ensure the rod meets specifications.

  • For example, a steel rod may have a diameter of 10mm, while a copper rod may have a diameter of 5mm.

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