Technical interview questions for mechanical engineers on Power Plant

1. What is pinch point and approach point ?
2. What are the statutory bodies involved in operating a boiler and what are their roles?
3. What is BMS in boiler operation and how it functions ?
4. What are the important parameter in designing a Heat Recovery Steam Generator?
5. What is the difference between thermal efficiency and overall efficiency of steam turbine?
6. What is the difference between a condensing type turbine and a back pressure type turbine?
7. What are the important parameters of water quality when used in a boiler for generating steam?
8. What are the advantages of gas turbine over steam turbine?
9. What is spill back in a pump?
10. What are the main reasons for observing pitting on steam turbine blades?
11. What operations needs to be performed regularly to avoid maintenance of gas turbine?
12. What is the pressure/vacuum maintained inside the condenser of a steam turbine?
13. How the vacuum is created during startup in a condenser?
14. What is the sealing arrangement inside a steam turbine?
15. What is the difference between uncontrolled extraction and controlled extraction in a steam turbine?