Hindustan PowerProjects Mechanical Maintenance Engineer Interview Questions and Answers

Inspection in mechanical engineering involves examining and evaluating components to ensure they meet quality standards.

• Perform visual inspections to check for defects or abnormalities

• Utilize measuring tools such as calipers, micrometers, and gauges to verify dimensions

• Conduct non-destructive testing methods like ultrasonic testing or magnetic particle inspection

• Document inspection results and create reports for qualit

The percentage of SO2 removed by a FGD system varies depending on the specific system and conditions.

• The percentage of SO2 removal by a FGD system can range from 50% to over 90%, depending on the type of FGD system used.

• Factors such as the type of coal being burned, the design of the FGD system, and operating conditions can all impact the efficiency of SO2 removal.

• For example, a wet FGD system typically achieves higher...read more

Efficiency in boilers is limited due to various factors.

• Incomplete combustion of fuel leads to energy loss

• Heat loss through flue gases and radiation

• Inefficient heat transfer due to scaling or fouling

• Improper insulation leading to heat loss

• Inadequate maintenance and tuning

• Lack of advanced control systems

• Design limitations and constraints

• Fuel quality and composition

• Operating conditions and load variations

The efficiency of a turbine is less due to various factors such as friction, heat losses, and mechanical losses.

• Friction between the moving parts of the turbine reduces its efficiency.

• Heat losses occur due to the conversion of thermal energy into mechanical energy.

• Mechanical losses include losses in bearings, seals, and other components.

• Efficiency equation: Efficiency = (Useful output energy / Input energy) * 100%