Parting quizz

Which components is driven by a turbine that is rotated by the exhaust gases and compress the air?

• Turbochargers

• Supercharger

• Wastegate

• Aneroid Capsule

An Automatic Boost Control Unit:

• prevents detonation and dissociation in the cylinder

• maintains an automatic preset boost pressure

• maintains the correct mixture strength for the boost pressure set

• sets the position of the wastegate to ensure the preset boost is maintained

Rated Altitude is:

• height at which the boost pressure ceases to be effective with a specific rpm set

• comparison between the boost pressure at sea level and that at a given altitude

• maximum altitude at which Rated Boost can be maintained with Rated rpm set

• altitude at which the wastegate becomes fully shut

The turbocharger wastegate is spring loaded towards:

• the open position

• the closed position

• A neutrally balanced partly open position

• the maximum boost position

The main function of a supercharger is to:

• increase the thermal efficiency of the engine

• increase the compression ratio of the engine

• maintain sea level pressure in the engine to above rated altitude

• increase the volumetric efficiency of the engine

With a constant manifold pressure set during the climb, the power output from an internally supercharged engine:

• decreases

• increases

• remains constant

• is unaffected by altitude change

The blade angle of a propeller is the angle between:

• the root chord and the tip chord of the propeller

• the chord and the airflow relative to the propeller

• the chord of the propeller and the longitudinal axis of the aircraf

• the propeller chord and the plane of rotation of the propeller

The geometric pitch of a propeller is:

• the distance it would move forward in one revolution at the blade angle

• the angle the propeller chord makes to the plane of rotation

• the distance the propeller actually moves forward in one revolution

• the angle the propeller chord makes to the relative airflow

The Beta range of a propeller is from:

• the feather stops to the flight fine pitch stop

• the feather stops to the ground fine pitch stop

• the feather stops to the reverse pitch stop

• the flight fine pitch stop to the reverse pitch stop

In a turbofan engine, the fan speed is controlled by:

• a reduction gear

• a wastegate

• the turbine

• varying the pitch