CAT Aircraft Systems and Components 2

Question 1

What is the purpose of an aircraft's bleed air system?

Accepted Answer

To provide high-pressure hot air from the engine compressor for cabin pressurization, heating, and ice protection

Answer

Bleed air is extracted from engine compressor stages and used for cabin pressurization, air conditioning packs, wing anti-icing, and engine start systems.

Question 2

What does TCAS stand for and what is its primary function?

Accepted Answer

Traffic Collision Avoidance System; it provides advisories to prevent mid-air collisions

Answer

TCAS (Traffic Collision Avoidance System) independently monitors airspace for other transponder-equipped aircraft and provides Resolution Advisories to pilots to prevent collisions.

Question 3

In aircraft landing gear systems, what is the function of an oleo strut?

Accepted Answer

To absorb landing impact energy using compressed oil and gas

Answer

An oleo strut is a pneumatic-hydraulic shock absorber that uses compressed oil and nitrogen gas to absorb and dissipate landing impact energy.

Question 4

What is the primary material used in modern commercial aircraft fuselage construction due to its high strength-to-weight ratio?

Accepted Answer

Aluminum alloy and carbon fiber reinforced polymer (CFRP)

Answer

Modern commercial aircraft use aluminum alloys and increasingly carbon fiber reinforced polymers (composites) because they offer excellent strength-to-weight ratios critical for fuel efficiency.

Question 5

What is the function of thrust reversers on a commercial jet aircraft?

Accepted Answer

To redirect engine exhaust forward to decelerate the aircraft after landing

Answer

Thrust reversers redirect jet exhaust forward (or divert bypass air forward) to produce reverse thrust, helping decelerate the aircraft during landing rollout.

CAT - Certified Aerospace Technician Practice Test

CAT - Certified Aerospace Technician Practice Test

CAT Aircraft Systems and Components 2