Unit 201 L3 LO 6 LO 8 Avionics and Electronics

What is the main purpose of an aircraft power supply?

• Provide electrical power to the aircraft’s systems

• Store fuel

• Support the airframe

What type of current do aircraft power supplies typically provide?

• Direct Current (DC) and Alternating Current (AC)

• Only Direct Current (DC)

• Only Alternating Current (AC)

What is an Auxiliary Power Unit (APU) used for in aircraft?

• Provide electrical power when the main engines are not running

• Increase flight speed

• Store electrical energy

What is the role of an inverter in an aircraft power supply system?

• Convert DC to AC

• Convert AC to DC

• Store energy

What component is used to protect aircraft electrical systems from overvoltage?

• Voltage regulator

• Battery

• Bus bar

What is the typical voltage of an aircraft AC power supply?

• 12V

• 115V

• 230V

What is the function of a transformer rectifier unit (TRU) in an aircraft?

• Convert AC to DC

• Convert DC to AC

• Store electrical energy

What is the main advantage of using AC power in aircraft?

• Easier to transform to different voltages

• More stable

• Less susceptible to interference

What does a ground power unit (GPU) provide?

• External electrical power to an aircraft on the ground

• Backup power during flight

• Emergency power in the air

What is the role of an aircraft generator?

• Convert mechanical energy into electrical energy

• Store electrical energy

• Convert electrical energy into mechanical energy