When starting a turbo generator in an...

Question 1 / 270705eccefa0bacbc34ba4d47102

Question 1 of 270705eccefa0bacbc34ba4d47102

When starting a turbo generator in an automated plant, you must provide external lube oil pressure to the unit for the purpose of _________.

Back

Question 1 of 27070

When starting a turbo generator in an automated plant, you must provide external lube oil pressure to the unit for the purpose of _________.

🔍 Key Concepts

• Purpose of lube oil systems in steam/turbo generators • How nozzle lifting beams and power pistons control steam admission to the turbine • What functions are mechanical/hydraulic vs. electrical in an automated plant start sequence

💭 Think About

• Ask yourself: Before any moving parts operate, what is the FIRST protection the machinery needs—mechanical support, control action, or electrical trip setup? • Consider which of the listed actions would plausibly depend on HYDRAULIC (oil) pressure instead of steam pressure or electrical signals. • Think about the normal direction of movement for a nozzle lifting beam at startup: do we usually want to admit steam or keep it shut while checks are completed?

✅ Before You Answer

• Verify which components in a turbo generator are actually operated by lube oil pressure (bearings, servomotors, power pistons). • Check which listed functions are typically handled by steam pressure rather than lube oil (such as lifting or loading valves/nozzles). • Confirm that the purpose of external lube oil before rolling is primarily to protect and position mechanical parts, not to directly trigger electrical trips.

Question 1 of 27070

When starting a turbo generator in an automated plant, you must provide external lube oil pressure to the unit for the purpose of _________.

energizing the generator overfeed trip

pressurizing the power piston to raise the nozzle lifting beam

opening the exhaust dump valve

pressurizing the power piston to lower the nozzle lifting beam

Question 1 / 270705eccefa0bacbc34ba4d47102

Question 1 of 270705eccefa0bacbc34ba4d47102

When starting a turbo generator in an automated plant, you must provide external lube oil pressure to the unit for the purpose of _________.

Back

Question 1 of 27070

When starting a turbo generator in an automated plant, you must provide external lube oil pressure to the unit for the purpose of _________.