Aparna Constructions and Estates Senior Engineer Interview Questions and Answers

OPC stands for Ordinary Portland Cement, which is a widely used type of cement in construction work.

• OPC is a type of cement that is commonly used in the construction industry.

• It is known for its high strength and durability.

• OPC is made by grinding clinker, gypsum, and other materials.

• It is used in various applications such as concrete, mortar, and plaster.

• OPC is available in different grades, such as OPC 33, OPC 43, an

One meter is equal to 39.37 inches.

• One meter is equivalent to 100 centimeters.

• One inch is equal to 2.54 centimeters.

• To convert meters to inches, multiply by 39.37 (100 * 2.54).

Steel density is typically around 7.85 g/cm^3.

• Steel density is commonly expressed in grams per cubic centimeter (g/cm^3).

• The density of steel can vary depending on the specific alloy composition.

• For example, the density of stainless steel is around 7.9 g/cm^3, while carbon steel is around 7.85 g/cm^3.

A shunt relay in an ACB is used to provide protection against overcurrents by diverting excess current away from the main circuit.

• Shunt relay is connected in parallel with the main circuit of the ACB.

• It detects overcurrents and activates to divert the excess current through a shunt path.

• This helps in protecting the main circuit from damage due to overcurrents.

• Shunt relays are commonly used in Air Circuit Breakers (ACBs...read more

CoC in HVAC stands for Certificate of Conformance, which is a document certifying that a product meets specified requirements.

• CoC in HVAC is a Certificate of Conformance that ensures a product meets specific requirements.

• It is often required in HVAC projects to ensure quality and compliance.

• CoC may include details such as product specifications, testing results, and manufacturer information.

Biological oxygen demand (BOD) and Chemical oxygen demand (COD) are important parameters in wastewater treatment plants.

• Biological oxygen demand (BOD) is a measure of the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in water.

• Carbonaceous oxygen demand (COD) is a measure of the amount of oxygen required to oxidize all the organic and inorganic matter in water.

• BOD is a ...read more

A voltage monitoring relay is a device that monitors voltage levels and triggers an alarm or protective action if the voltage exceeds or falls below a set threshold.

• Monitors voltage levels in electrical systems

• Triggers alarm or protective action if voltage exceeds or falls below set threshold

• Used to protect equipment from damage due to voltage fluctuations

WTP plant works on the principle of physical and chemical processes to remove impurities from water.

• Water enters the plant and goes through processes like coagulation, flocculation, sedimentation, filtration, and disinfection.

• Coagulation involves adding chemicals to water to make impurities clump together.

• Flocculation helps in forming larger particles called floc for easier removal.

• Sedimentation allows the floc to sett...read more

I provide daily and monthly reports on project progress, issues, and key metrics to track performance.

• Daily reports include updates on tasks completed, challenges faced, and plans for the next day.

• Monthly reports summarize overall progress, budget status, and any potential risks or delays.

• Reports may also include key performance indicators (KPIs) such as project milestones achieved, budget variance, and resource utiliz...read more