20+ Nagarjuna Construction Company Interview Questions and Answers for Freshers

Unit weight of different diameters of steel bars

• Unit weight of steel = D^2/162.2 kg/m, where D is the diameter of the steel bar in mm

• Calculate unit weight for each diameter provided in the question

• 32mm dia steel: 32^2/162.2 = 6.31 kg/m

• 25mm dia steel: 25^2/162.2 = 3.85 kg/m

• 20mm dia steel: 20^2/162.2 = 2.47 kg/m

• 16mm dia steel: 16^2/162.2 = 1.57 kg/m

• 10mm dia steel: 10^2/162.2 = 0.62 kg/m

• 08mm dia steel: 08^2/162.2 = 0.39 kg/m

• 06mm dia steel: 06^2/162.2 = 0.22 kg/m

The size of plywood board used in centring varies depending on the specific project requirements.

• The size of plywood board used in centring can range from 4 feet by 8 feet to 4 feet by 10 feet.

• Thicker plywood boards are typically used for heavier loads or taller structures.

• Plywood boards are commonly used in construction for formwork and temporary support structures.

• The size of plywood board used in centring is determined by the size and weight of the concrete structure being...read more

The length of props used in staging varies depending on the specific requirements of the production.

• The length of props can range from a few inches to several feet, depending on the size of the stage and the needs of the performance.

• Props used in staging can include furniture, small handheld items, and larger set pieces.

• The length of props is determined by the director and set designer during the planning stages of the production.

Generally, aggregates ranging from 3/8 inch to 1.5 inches are used in PCC.

• Aggregates used in PCC typically range from 3/8 inch to 1.5 inches in size.

• The size of aggregates used in PCC depends on the specific requirements of the project.

• Smaller aggregates are usually preferred for smoother finishes, while larger aggregates may be used for increased strength.

• For example, a common aggregate size used in PCC is 3/4 inch.

Unit weight of 20mm aggregate is typically around 1550 kg/m^3.

• Unit weight of 20mm aggregate is usually around 1550 kg/m^3.

• It can vary slightly depending on the specific gravity of the aggregate material.

• Unit weight is important in determining the amount of material needed for a project.

• For example, if the specific gravity of the aggregate is 2.7, then the unit weight would be 1620 kg/m^3.

Unit weight of 10mm aggregate is typically around 1600 kg/m^3.

• Unit weight of 10mm aggregate is usually around 1600 kg/m^3.

• It can vary slightly depending on the specific gravity of the aggregate material.

• Unit weight is important in determining the quantity of aggregate needed for a project.

The unit of sand is typically measured in cubic meters or cubic feet.

• The unit of sand is commonly measured in cubic meters (m³) or cubic feet (ft³).

• Other units like kilograms (kg) or tons (metric or imperial) can also be used depending on the context.

• For example, a construction project may require a certain amount of sand in cubic meters for concrete mixing.

The number of dumpers and excavators needed for a 15 km project depends on various factors such as the type of material being transported and the size of the excavation area.

• The number of dumpers needed for a 15 km project will depend on the volume and weight of material to be transported, as well as the capacity of each dumper.

• The number of excavators required will depend on the size of the excavation area, the type of soil or material to be excavated, and the depth of excav...read more

The quantity done by 200 machines in an hour depends on the efficiency and capacity of each machine.

• The quantity done will depend on the output capacity of each machine

• Factors such as machine speed, efficiency, and type of work being done will also impact the quantity produced

• For example, if each machine can produce 10 units per hour, then 200 machines will produce 2000 units in an hour

PQC stands for Pavement Quality Concrete. It is a type of concrete used for road construction.

• PQC is a high-quality concrete mix used for the construction of rigid pavements.

• It is designed to withstand heavy traffic loads and resist wear and tear.

• PQC is made with a higher cement content and a lower water-cement ratio than regular concrete.

• It is also reinforced with steel bars or fibers to increase its strength and durability.

• PQC is commonly used in highways, airports, and ind...read more

A lead is a potential customer or client who has shown interest in a product or service.

• A lead is typically generated through marketing efforts such as advertising or networking.

• Leads can be obtained through various channels such as social media, email campaigns, or trade shows.

• Once a lead is identified, they are usually passed on to the sales team for further follow-up and conversion.

• Qualifying leads involves determining their level of interest and likelihood to make a purch...read more

Online UPS provides continuous power supply without any interruption while offline UPS provides power supply only when the main power source fails.

• Online UPS is more expensive than offline UPS

• Online UPS has a higher efficiency rate than offline UPS

• Offline UPS has a faster response time than online UPS

• Online UPS is used for critical applications like data centers, hospitals, and laboratories

• Offline UPS is used for non-critical applications like personal computers and home appl...read more

Deductions considered while measuring plastering quantity

• Deductions for openings such as doors and windows

• Deductions for uneven surfaces or irregular shapes

• Deductions for wastage during application

• Deductions for overlaps in plastering layers

• Deductions for thickness variations

To track a project in Primavera P6 on a daily basis, use the following steps.

• Update progress for each activity daily

• Review critical path activities regularly

• Monitor resource allocation and availability

• Compare planned vs. actual progress

• Generate daily reports for stakeholders

Power cuts can disrupt welding process, leading to incomplete or faulty welds. Proper precautions and backup power sources are essential.

• Ensure backup power sources are available in case of power cuts

• Implement surge protectors to prevent damage to welding equipment

• Regularly maintain and inspect welding equipment to prevent issues

• Train welders on proper procedures for handling power cuts during welding

• Consider investing in generators for uninterrupted power supply

A network is a group of interconnected devices that can communicate with each other. A switch is a device that connects devices in a network.

• A network allows devices to communicate with each other

• A switch connects devices in a network

• Switches can be used to segment a network into smaller parts

• Switches can improve network performance by reducing network congestion

• Examples of switches include Cisco Catalyst switches and Juniper EX switches

The general format for bill preparation includes itemized list of services or products provided, quantities, rates, and total amount due.

• Include a header with company name, address, and contact information

• List each service or product provided with a description, quantity, rate, and subtotal

• Calculate any applicable taxes or discounts and include them in the total amount due

• Provide payment terms and methods accepted

• Include a due date for payment

• Ensure the bill is clear, organiz...read more

To improve security and safety of assets, a comprehensive risk assessment should be conducted followed by implementation of appropriate security measures.

• Conduct a comprehensive risk assessment to identify potential threats and vulnerabilities

• Implement appropriate security measures such as access control, CCTV surveillance, and alarm systems

• Train employees on security protocols and procedures

• Regularly review and update security measures to adapt to changing threats

• Establish a...read more

I will plan out the resolve the security issues by conducting a thorough risk assessment and implementing appropriate measures.

• Conduct a risk assessment to identify potential security threats

• Develop a security plan based on the identified risks

• Implement appropriate security measures such as access control, surveillance, and training

• Regularly review and update the security plan to ensure its effectiveness

• Collaborate with other departments and stakeholders to ensure a comprehen...read more

The ratio of M20, M25, M15 is 1:1:2 respectively.

• M20 has 1 part cement, 1.5 parts sand and 3 parts aggregate

• M25 has 1 part cement, 1 part sand and 2 parts aggregate

• M15 has 1 part cement, 2 parts sand and 4 parts aggregate

To make a material supply chain, you need to establish relationships with suppliers, optimize inventory management, and ensure efficient logistics.

• Establish relationships with reliable suppliers to ensure a steady flow of materials

• Optimize inventory management to prevent stockouts and minimize excess inventory

• Implement efficient logistics strategies to streamline the transportation of materials

• Utilize technology such as supply chain management software to track and manage the...read more

Baselines in Primavera are snapshots of the project schedule at a specific point in time, used for comparison and tracking progress.

• Baselines capture the original project plan before any changes are made.

• They are used as a reference point to compare actual progress against planned progress.

• Baselines help in identifying deviations from the original plan and taking corrective actions.

• In Primavera, baselines can be created for the entire project or specific activities.

• They are e...read more