Lodha Group Highway Engineer Interview Questions and Answers

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

The thickness of mortar used in brickwork varies depending on the type of brickwork and the desired strength.

• The thickness of mortar in brickwork is typically between 10mm to 15mm.

• For load-bearing walls, the mortar thickness may be increased to 20mm.

• In some cases, thin-bed mortar systems are used, where the thickness can be as low as 3mm.

• The thickness of mortar can also vary based on the type of bricks used, such as cl

Bricks need to dry before starting the brick work to ensure proper bonding and prevent shrinkage.

• Drying bricks removes excess moisture, allowing them to harden and strengthen.

• Wet bricks can cause shrinkage and cracking during the drying process.

• Dry bricks provide better adhesion with mortar, resulting in a stronger and more durable structure.

• Moisture in bricks can lead to efflorescence, a white powdery deposit on the s...read more

There are different types of tiles used in toilets and living areas.

• Ceramic tiles are commonly used in both toilets and living areas.

• Porcelain tiles are also popular for their durability and water resistance.

• In toilets, anti-slip tiles are often used to prevent accidents.

• Living areas may have a variety of tiles like marble, granite, or vinyl.

• Tiles with different finishes like matte, glossy, or textured can be chosen ba