IGT PO4.2

What is the main requirement for fuel used in a gas turbine?

• High sulfur content

• High viscosity

• Low ignition temperature

• High heating value

Which of the following is NOT a type of fuel mentioned?

• Liquid Fuel

• Solid Fuel

• Synthetic Fuel

• Gaseous Fuel

What does HHV stand for in the context of fuel?

• Heat Harmonic Value

• Hydrogen Heating Value

• High Heat Volume

• High Heating Value

What is the significance of the Lower Heating Value (LHV)?

• It indicates the fuel's ignition temperature.

• It is important for practical efficiency calculations.

• It measures the total energy content of the fuel.

• It is used for theoretical maximum energy calculations.

What is a critical factor for the cleanliness of fuel?

• High particulate matter

• Low sulfur content

• High water content

• High viscosity

What is the maximum allowable contamination limit for solid particles in liquid fuel?

• 5 grams/1000 gal

• 10 grams/1000 gal

• 8 grams/1000 gal

• 15 grams/1000 gal

What is the purpose of having a low ignition temperature for fuel?

• To increase viscosity

• To ignite reliably under turbine conditions

• To ensure high energy content

• To reduce emissions

Which of the following is a requirement for the consistency of heat input to the turbine?

• Fuel metering valve must not exceed 71°C

• Supply temperature must be greater than 65°C

• Supply temperature must be more than 55⁰C

• Fuel metering valve must not exceed 93°C

What is the maximum viscosity allowed at the engine fuel shut-off valve?

• 20 centistokes

• 15 centistokes

• 10 centistokes

• 5 centistokes

What is the main component that fuels consist of?

• Carbon

• Helium

• Nitrogen

• Oxygen