Maharashtra State Electricity Distribution Company Head/VP/GM-HR Interview Questions and Answers

Theory of machine is a branch of engineering that deals with the study of machines and their mechanisms.

• Theory of machine focuses on understanding the principles behind the operation of machines.

• It involves studying the design, construction, and operation of machines.

• Examples include studying the movement of gears in a gearbox or the operation of a piston in an engine.

PA fan stands for Primary Air fan, which is used in power plants to supply air for combustion in the boiler.

• Supplies primary air for combustion in the boiler

• Helps in maintaining proper air-fuel ratio for efficient combustion

• Assists in controlling the temperature and pressure inside the boiler

• Improves the overall efficiency of the boiler

• Examples: FD fan in a power plant

ID fan is used to control the draft in the furnace while PA fan is used to supply combustion air to the furnace.

• ID fan is located at the outlet of the furnace while PA fan is located at the inlet of the furnace.

• ID fan helps in maintaining negative pressure inside the furnace while PA fan helps in supplying air for combustion.

• ID fan is used to extract flue gases from the furnace while PA fan is used to supply primary an...read more