SP 4: GT Performance Enhancement Technologies

Gas turbine is based on which thermodynamic cycle?

• Rankine cycle

• Brayton cycle

• Otto cycle

• Diesel Cycle

Thermodynamic cycle for combined cycle plant?

• Brayton and Rankine cycles

• Otto and Brayton cycles

• Otto and Rankine cycles

• Diesel and Otto cycles

How the gas turbine thermodynamic cycle sequence?

• Combustion> Intake air pressurization> expansion> exhaust

• Intake air pressurization>combustion> exhaust> expansion

• Expansion> Intake air pressurization> combustion> exhaust

• Intake air pressurization>combustion>expansion>exhaust

Name 4 main components of gas turbine?

• Compressor, combustor, turbine and exhaust

• Compressor, turbine, exhaust, boiler

• Compressor, combustor, condenser, exhaust

• Combustor, turbine, exhaust, generator

Name 3 factors affecting GT performance?

• Ambient temperature, humidity, ambient pressure

• Ambient temperature, turbine speed, ambient pressure

• Time, turbine speed, ambient pressure

• Time, fuel gas pressure, ambient pressure

Name 3 factors affecting GT maintenance schedule?

• Operating hours, number of starts and fuel type

• Ambient temperature, operating hours, fuel type

• Operating hours, number of starts, ambient pressure

• Operating hours, number of starts, humidity

Air pressurization takes place in which component?

• Compressor

• Combustor

• Turbine

• Air intake

Name 2 degradation categories in GT?

• Recoverable and unrecoverable

• Recoverable and degradable

• Degradable and unrecoverable

• Undegradable and degradable

Basic formula for GT power?

• Power=Mass flow x enthalpy (heat)

• Power=current x voltage

• Power=mass flow x speed

• Power=speed x enthalpy (heat)

Name 3 power augmentation technologies?

• Evaporative cooling, wet compression and hydrogen blending.

• Evaporative cooling, wet compression and air injection.

• Fogging, wet compression and pre mix combustion

• Evaporative cooling, wet compression and pre mix combustion.