Rajvardhan Construction Interview Questions and Answers

Safety valves are designed to prevent overpressure in a system by releasing excess pressure. The valve that pops up first is typically the one set to the lowest pressure threshold.

• Safety valves are set at different pressure thresholds to ensure that the system does not exceed its maximum pressure capacity.

• The safety valve that pops up first is usually the one set to the lowest pressure threshold, as it will activate before the others in case of overpressure.

• This sequential ac...read more

To reduce process time and call back early, we need to analyze the current process and identify bottlenecks.

• Analyze the current process flow

• Identify bottlenecks and areas of improvement

• Implement process improvements such as automation or streamlining

• Monitor and measure the impact of changes

• Continuously review and improve the process

There are several types of bearings used in various industries.

• There are two main categories of bearings: plain bearings and rolling bearings.

• Rolling bearings can be further classified into ball bearings and roller bearings.

• Ball bearings include deep groove ball bearings, angular contact ball bearings, and thrust ball bearings.

• Roller bearings include cylindrical roller bearings, tapered roller bearings, spherical roller bearings, and needle roller bearings.

• Other types of bear...read more

Cooling towers are heat rejection devices that use water to remove heat from a process or system.

• Cooling towers work on the principle of evaporation, where heat is transferred from the water to the air through the process of evaporation.

• The hot water from the system is pumped to the top of the cooling tower, where it is distributed over the fill media to increase the surface area for evaporation.

• As the water evaporates, it removes heat from the remaining water, which then flo...read more

Water treatment of DM water and Drum water speciation involves processes to remove impurities and ensure water quality.

• DM water treatment involves processes like reverse osmosis, ion exchange, and UV sterilization to remove impurities.

• Drum water speciation involves analyzing the chemical composition of water in drums to ensure it meets required standards.

• Both processes are crucial in industries like pharmaceuticals, electronics, and power plants to maintain water quality.

• Regu...read more

The charging temperature for ESP depends on the type of material being charged.

• The charging temperature for ESP varies depending on the type of material being charged

• For example, the charging temperature for coal is typically between 150-200°C

• However, for biomass, the charging temperature can be as low as 50°C

• The charging temperature should be carefully monitored to prevent damage to the ESP

• The temperature can be adjusted based on the specific needs of the process