AMT 11-05 Aircraft Electrical Power Final Period Long Quiz Set 1

In a large multi-engine aircraft, what serves as backup power in case of alternator failure?

• APU Generator

• Ram Air Turbine

• 1. Battery circuit

 In a split-bus power distribution system, how are AC bus 1 and AC bus 2 powered during normal operation?

• 1. Both buses are powered by generator 1

• 1. Each bus is powered by a different generator

• 1. Each bus is powered by a different generator

How do DC buses receive power in a parallel power distribution system?

• 1. Directly from the battery

• 1. Via transformer units

• 1. From AC busses through converters

What role do Generator Control Units (GCU) play in the electrical system?

• Manage individual generators

• 1. Control distribution of DC power

• 1. Monitor battery voltage

 What type of power does the Boeing 747-400's TR units provide as backups?

• 1. Alternating current (AC)

• 1. Direct current (DC)

• 1. Emergency power

Which component ensures correct generator operation in the AC power system?

• 1. Bus Power Control Unit (BPCU)

• 1. Generator Control Unit (GCU)

• 1. Control transformers

What is the function of the ram air turbine in the split-bus power distribution system?

• 1. Provides emergency AC power

• 1.  Supplies power to the APU

• 1. Acts as an additional generator in case of failure

How are buses connected in a parallel power distribution system during normal flight?

• 1. In series

• 1. In parallel

• 1. Alternately

Which type of system offers enhanced flexibility by combining features of split-bus and parallel-bus systems?

• 1. Split-parallel

• 1. Parallel

• Split

In a parallel power distribution system, what provides redundancy in case of generator failure?

• 1. Battery circuit

• 1. Ram air turbine

• 1. APU generator