Recurrent Period A Flashcards
(60 cards)
Pneumatics - Direct: What is the primary function of the 787’s environmental control system?
To provide cabin pressurization and air conditioning using electrically driven cabin air compressors.
Pneumatics - Direct: How is cabin pressurization achieved on the 787?
By using electrically driven cabin air compressors to supply conditioned air.
Pneumatics - Direct: What is one key advantage of using electrically driven cabin air compressors on the 787?
They reduce engine bleed air usage, improving fuel efficiency.
Pneumatics - Fill: The 787 uses ___-driven cabin air compressors for pressurization and air conditioning.
__electrical__
Pneumatics - Fill: Cabin pressurization on the 787 is achieved via ___ compressors.
__electrically driven__
Pneumatics - Fill: The environmental control system on the 787 supplies conditioned air using ___ compressors.
__electrical__
Pneumatics - MC: Which of the following is the method used by the 787 for cabin pressurization? (A) Engine bleed air, (B) Hydraulic pressurization, (C) Electrically driven cabin air compressors, (D) Manual operation
Answer: C) Electrically driven cabin air compressors
Pneumatics - MC: What is a primary benefit of using electrically driven cabin air compressors on the 787? (A) Increased noise, (B) Reduced engine bleed, (C) Higher fuel consumption, (D) More maintenance
Answer: B) Reduced engine bleed
Pneumatics - MC: The 787’s environmental control system relies on: (A) Bleed air from the engines, (B) Electrically driven compressors, (C) Solar power, (D) Manual operation
Answer: B) Electrically driven compressors
Pneumatics - TF: True or False: The 787 uses engine bleed air for cabin pressurization.
False
Pneumatics - TF: True or False: Electrically driven cabin air compressors supply the 787’s air conditioning.
True
Pneumatics - TF: True or False: The 787’s environmental control system increases fuel consumption by using engine bleed air.
False
Electrical - Direct: What are the primary sources of electrical power on the 787?
Engine-driven generators and the APU.
Electrical - Direct: Which component provides backup electrical power on the 787?
The APU.
Electrical - Direct: What is a key function of the 787’s electrical system?
To supply power to avionics and other critical systems.
Electrical - Fill: The 787’s electrical power is mainly generated by the ___ and the ___.
__engine-driven generators__; __APU__
Electrical - Fill: Primary electrical systems on the 787 supply power for ___, navigation, and communications.
__avionics__
Electrical - Fill: The electrical system is critical for powering ___ and instruments.
__avionics__
Electrical - MC: Which of the following is a key function of the electrical system? (A) Cabin pressurization, (B) Avionics power, (C) Fuel delivery, (D) Hydraulic actuation
Answer: B) Avionics power
Electrical - MC: The 787 electrical system primarily operates at: (A) 115V DC, (B) 270V AC, (C) 28V DC, (D) 400V AC
Answer: B) 270V AC
Electrical - MC: Which of the following is NOT a source of electrical power on the 787? (A) Engine generators, (B) APU, (C) Fuel pumps, (D) Batteries
Answer: C) Fuel pumps
Electrical - TF: True or False: The 787’s electrical system operates at 270V AC.
True
Electrical - TF: True or False: The APU is a backup source of electrical power on the 787.
True
Electrical - TF: True or False: The 787’s electrical power is solely provided by the engines.
False