Megha Engineering & Infrastructures Engineer Interview Questions, Process, and Tips

Grade of M20 refers to the mix ratio of concrete where M denotes mix and 20 represents the compressive strength in N/mm^2 after 28 days.

• M20 concrete mix consists of 1 part cement, 1.5 parts sand, and 3 parts aggregate.

• The compressive strength of M20 concrete after 28 days is 20 N/mm^2.

• It is commonly used for residential construction like foundations, slabs, and beams.

Grade of M25 refers to the mix design of concrete with a compressive strength of 25 MPa.

• M25 grade concrete is a mix design with a compressive strength of 25 MPa after 28 days of curing.

• It is commonly used in construction for residential buildings, bridges, and pavements.

• The mix proportion for M25 grade concrete is usually 1:1:2 (cement:sand:aggregate).

4.75 to 10 size of sieve refers to the range of particle sizes that can pass through the sieve.

• 4.75 to 10 size of sieve indicates the range of particle sizes that can pass through the sieve mesh.

• Particles smaller than 4.75 will pass through, while particles larger than 10 will be retained on the sieve.

• This range is commonly used in particle size analysis in industries like construction and mining.

Sinking fund method is a way for a company to set aside money over time to repay a debt or replace an asset.

• Sinking fund method involves regular contributions to a fund specifically designated for repaying debt or replacing assets.

• The purpose of the sinking fund is to ensure that enough money is available when the debt matures or the asset needs to be replaced.

• By using the sinking fund method, a company can avoid havin...read more

An annuity is a financial product that provides a series of payments at regular intervals.

• Annuities are typically used for retirement income or to provide a steady income stream.

• There are different types of annuities such as fixed annuities, variable annuities, and indexed annuities.

• Annuities can be purchased with a lump sum payment or through a series of payments over time.

• The payments from an annuity can be guarantee...read more