10+ NTPC Interview Questions and Answers

Bearings are used to reduce friction between two moving parts while refrigeration is the process of cooling a space or substance.

• Bearings work on the principle of reducing friction between two moving parts by providing a smooth surface for them to roll or slide against each other.

• Refrigeration works on the principle of removing heat from a space or substance, which causes it to cool down.

• Bearings are commonly used in machines such as engines, turbines, and pumps to reduce fri...read more

Designing parameters of heat exchanger involves determining heat transfer rate, surface area, fluid flow rate, and material selection.

• Determine the heat transfer rate required for the application

• Select appropriate fluids and their flow rates

• Calculate the surface area required for heat transfer

• Choose suitable materials for construction based on operating conditions

• Consider factors such as pressure drop, fouling, and corrosion

• Optimize the design for efficiency and cost-effectiv...read more