IGT SA7.0 Compressor

What is the primary function of a compressor?

• To reduce air pressure

• To increase the pressure of a gas by reducing its volume

• To decrease gas temperature

• To circulate cooling air

Which type of flow machine is an axial flow compressor?

• Radial flow

• Centrifugal flow

• Parallel flow

• Axial flow

What component is located at the front section of the gas turbine and draws in air?

• Stator

• Rotor

• Combustion chamber

• Impeller

What is the main function of stator vanes in a compressor?

• To accelerate the air

• To mix fuel and air

• To convert kinetic energy into pressure

• To ignite fuel

How does the airflow direction change in an axial flow compressor?

• It moves outward from the center

• It flows parallel to the axis

• It rotates around the axis

• It flows in a spiral motion

What is a key difference between axial and centrifugal compressors?

• Axial compressors have lower efficiency

• Centrifugal compressors are used for high-power applications

• Axial compressors have parallel airflow, while centrifugal compressors use centrifugal force

• Centrifugal compressors handle higher temperatures

What is a common application for axial gas turbines?

• Small power generation units

• Industrial pumps

• Jet engines

• Air conditioning units

What can compressor surging lead to?

• Increased airflow velocity

• Reduced mechanical stress

• Loud noise and vibrations

• Increased power output

What happens during a compressor surge?

• Air moves continuously from inlet to outlet

• Airflow reverses direction temporarily

• Pressure remains constant

• Fuel combustion stops

Which component in a gas turbine adjusts to prevent surging?

• Rotor blades

• Variable inlet guide vanes

• Diffuser

• Exhaust fan