Pakur Polytechnic Interview Questions and Answers

Surveying is the process of measuring and mapping the earth's surface. Levelling is a technique used in surveying to determine the height of points on the ground.

• Surveying involves measuring and mapping the earth's surface to determine the position of points and the distances and angles between them.

• Levelling is a technique used in surveying to determine the height of points on the ground relative to a reference point.

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Fineness of cement can be determined by using the sieve analysis method.

• Take a sample of cement and pass it through a 90-micron sieve.

• Weigh the residue left on the sieve and calculate the percentage retained.

• Repeat the process with sieves of different sizes to determine the particle size distribution.

• The fineness of cement is determined by the specific surface area, which can be calculated using the Blaine air permeabi

Mix design of concrete involves determining the proportions of various ingredients to achieve desired properties.

• Mix design involves selecting the appropriate water-cement ratio, aggregate size and type, and admixtures.

• The strength, workability, and durability of concrete can be controlled through mix design.

• Factors such as climate, exposure conditions, and intended use of the concrete must be considered in mix design.

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