How Much You Know About Gas Turbine? Trivia Quiz
(1).png "How Much You Know About Gas Turbine? Trivia Quiz")
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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