Nagarjuna Construction Company Junior Engineer Interview Questions, Process, and Tips

M20 Grade concrete ratio is 1:1.5:3 (cement:sand:aggregate)

• M20 Grade concrete has a ratio of 1:1.5:3 for cement:sand:aggregate

• This means for every 1 part of cement, 1.5 parts of sand and 3 parts of aggregate are used

• The total proportion is 1:1.5:3 which is commonly used in construction projects

Plaster can be checked by examining its color, texture, hardness, and adhesion to the surface.

• Check the color of the plaster for any discoloration or uneven patches.

• Feel the texture of the plaster to ensure it is smooth and free of bumps or cracks.

• Test the hardness of the plaster by gently tapping it with a tool or fingernail.

• Check the adhesion of the plaster by trying to peel it off the surface.

To calculate the bar bending schedule (BBS) of a ring, you need to determine the diameter of the ring, the number of bars required, and the length of each bar.

• Calculate the circumference of the ring using the formula 2 * π * r, where r is the radius of the ring.

• Determine the spacing between the bars based on the design requirements and the diameter of the bars.

• Calculate the total length of bars required by multiplying ...read more

11 KV wires typically use aluminum or copper conductors.

• Aluminum and copper are commonly used conductors for 11 KV wires.

• Aluminum conductors are lighter and cheaper, but have lower conductivity compared to copper.

• Copper conductors have higher conductivity and are more durable, but are heavier and more expensive.

• The choice between aluminum and copper conductors depends on factors like cost, weight, and conductivity requ

The depth of a pole erection varies depending on the type of pole and the soil conditions.

• The depth of a pole erection is typically determined by the height of the pole and the type of soil it is being installed in.

• In general, a pole should be buried at least one-third of its total length for stability.

• For example, a 12-foot pole should be buried at least 4 feet deep.

• In rocky or sandy soil, poles may need to be buried ...read more

The ratio of pole grouting refers to the proportion of grout material used in relation to the size of the pole being grouted.

• The ratio of pole grouting is typically expressed as a mix ratio of cement, sand, and water.

• Common ratios for pole grouting include 1:2:3 (cement:sand:water) or 1:3 (cement:water).

• The ratio may vary depending on the type of pole, soil conditions, and structural requirements.

• Proper mixing and appl...read more

The ratio of pole grouting refers to the proportion of grout material used in relation to the size of the pole being grouted.

• The ratio of pole grouting is typically expressed as a mix ratio of grout material to water or other additives.

• For example, a common ratio for pole grouting could be 1:3, meaning 1 part grout material to 3 parts water.

• The specific ratio used will depend on factors such as the type of pole, soil c

HVDS Scheme is a High Voltage Distribution System used for efficient power distribution. Time to complete 1 km site drawing varies based on complexity.

• HVDS Scheme is a system for distributing electricity at higher voltages to reduce losses.

• Time to complete 1 km site drawing in AutoCad depends on complexity, experience, and tools used.

• For example, a simple site drawing may take a few hours, while a complex one may take

Power system parts of Erection include transformers, switchgear, cables, and busbars.

• Transformers are used to step up or step down voltage levels in the power system.

• Switchgear is used to control, protect, and isolate electrical equipment.

• Cables are used to transmit electrical power from one point to another.

• Busbars are used to distribute electrical power within a substation or switchyard.