CAT Aircraft Systems and Components

Question 1

What is the primary function of an aircraft's hydraulic system in large commercial aircraft?

Accepted Answer

To actuate flight controls, landing gear, and brakes

Answer

Aircraft hydraulic systems use fluid under pressure to actuate primary and secondary flight controls, extend/retract landing gear, and apply brakes.

Question 2

Which type of aircraft structure uses the outer skin to carry primary structural loads?

Accepted Answer

Monocoque

Answer

A monocoque structure relies entirely on the outer skin to carry all structural loads, with no internal framework sharing the load.

Question 3

What does the term 'V-speeds' refer to in aviation?

Accepted Answer

Defined airspeeds critical to aircraft operation and safety

Answer

V-speeds are defined reference airspeeds (such as Vne, Vlo, Vs) that are critical to safe aircraft operations and are established during aircraft certification.

Question 4

In a turbofan engine, what is the purpose of the bypass ratio?

Accepted Answer

It describes the ratio of air bypassing the engine core to air flowing through the core

Answer

Bypass ratio is the ratio of mass airflow bypassing the engine core to airflow through the core, with higher ratios indicating more fuel-efficient high-bypass turbofan engines.

Question 5

What is the function of an aircraft's pitot-static system?

Accepted Answer

To measure airspeed, altitude, and vertical speed by sensing air pressure

Answer

The pitot-static system uses pitot (dynamic) and static air pressure measurements to drive the airspeed indicator, altimeter, and vertical speed indicator.

CAT - Certified Aerospace Technician Practice Test

CAT - Certified Aerospace Technician Practice Test

CAT Aircraft Systems and Components