6310 Quizz 3

What is the PRIMARY function of an APU?

• Provide an air supply for engine starting

• Provide reversionary AC generation

• Provide warm air for the ECS

• Provide reversionary DC generation

What are the 3 Stages of an AC Brushless Generator?

• Pilot Exciter, Main Exciter, Secondary Generator

• Primary Exciter, Main Exciter, Main Generator

• Pilot Exciter, Main Rotor, Main Generator

• Pilot Exciter, Main Exciter, Main Generator

An External Power Control Unit provides what protection?

• Over Frequency

• Dead Bus

• Incorrect Phase Rotation

• Differential Current

With Reference to the diagram. How is voltage been provided to the aircraft busbars?

• External Power

• APU

• AC Gen 1

• AC Gen 2

With reference to AC GCU Fault conditions, a difference in current between phases is known as?

• Under Current

• Differential Current

• Over Current

• Current Unbalance

DC Generation Systems are normally rated at 28Vdc. This is to?

• improve conversion into AC power

• Support three-phase systems.

• maintain a positive charge state to aircraft batteries.

• improve conversion from AC power.

Aircraft ALKALINE batteries normally contain how many cells?

• 2 X 12Vdc

• 20 X 1.3Vdc

• 3 X 8Vdc

• 830 X 0.42Vdc

Which of the following is an advantage that relays and contactors have over manually operated switches? (Select one or more answer)

• Rapid movement of the contacts reduces the effects of arking

• The can provide automatic control over circuits

• Control circuits must be as close as possible to the main circuit installation.

• Low current circuits can be completed using high current control circuits.

With reference to the diagram. The input voltage at A, B and C and the output voltage at TB1 is?

• 115Vac/28Vdc

• 28Vac?115Vdc

• 115Vdc/28Vdc

• 115Vac/28Vac

With reference to an AC generation system, what component would be started if a generator was to fail?

• The APU

• The Inverter

• The TRU

• The 3rd engine