How Much You Know About Gas Turbine? Trivia Quiz
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How much do you know about gas turbines? Do you think you could pass this quiz? A gas turbine, also recognized as a combustion turbine, is a continuous and internal combustion engine. There are three different variables common to all gas turbines. These three include upstream rotating gas compression, a combustor, and a downstream turbine on the same shaft. Take this quiz and test your understanding of gas turbines.
- 1.The gas turbine works on this cycle.
- A.
Otto cycle
- B.
Rankine cycle
- C.
Brayton cycle
- 2.The function of Gas Scrubber is
- A.
To remove oxygen &other gases from the supply gas
- B.
To remove liquid particles from the supply gas
- C.
To remove carbon monoxide from the supply gas
- 3.The gas turbine needs no starting device.
- A.
True
- B.
False
- 4.What is the function of the gas turbine starting device?
- A.
Supply high torque at zero speed
- B.
Drive the unfired gas turbine to an acceptable firing speed
- C.
To assist the fired turbine to a self sustaining speed
- D.
All the above
- E.
Only B & C
- 5.The fire hazard valve is a safety device that shuts the gas supply in case of emergency or during normal shut down.
- A.
True
- B.
False
- 6.The bleed valve is used to bleed compressed air for cooling compressor liners.
- A.
True
- B.
False
- 7.The bleed valve is used to protect the compressor from surging.
- A.
True
- B.
False
- 8.What is the purpose of pressure switch in bearing header?
- A.
To regulate the pressure in bearing header.
- B.
To prevent the turbine from starting in case of low lube oil header pressure.
- C.
To control the flow of lube oil.
- 9.Journal bearing supports both the radial and axial load of the shaft.
- A.
True
- B.
False
- 10.Journal bearing clearance can be measured using a feeler gauge.
- A.
True
- B.
False
- 11.What is the most accurate method to measure journal bearing clearance?
- A.
By lead wire by lead wire
- B.
By subtracting shaft diameter from bearing inside diameter
- C.
By feeler gauge
- 12.What is the most commonly used journal bearing material in gas turbine?
- A.
Tin base white metal
- B.
Lead base white metal
- C.
Copper alloys
- 13.Gas turbine bearings are based on hydrodynamic lubrication.
- A.
True
- B.
False
- 14.High shaft speeds and low bearing loads result in hydrodynamic friction.
- A.
True
- B.
False
- 15.Generally boundary friction occurs
- A.
In high speed and low load condition
- B.
During starting and coast down of machine
- 16.The differential contraction results in upward bending of rotor is known as
- A.
shaft sag
- B.
Shaft hog
- C.
Shaft bend
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