PPL Air Tech - Electrical System

A modern light aircraft has a ____ electrical system.

• B.B.C

• D.C

• B.B.S

• A.C

Electrical power is produced by the _____ when the engine is running and by the _____ when it is not running

• alternator, generator

• generator, alternator

• battery, alternator

• alternator, battery

Current runs through wires and the _______ to the unit that needs the power. Afterwards it runs to _______ through a _______.

• starter motor, alternator, battery

• bus bar, ground, ground wire

• ground wire, the bus bar, battery

• generator, battery, ground wire

What can the aircraft's battery as be known as?

• alternator

• generator

• accumulator

• bus bar

What is the length of time a battery can last based off?

• ampere-hours

• amp rating

• voltage

• resistance-hours

A battery with an ampere hour rating of 600 will last how long when running 10 amps an hour?

• 10 hours

• 16 hours

• 60 hours

• 160 hours

A Nicad battery is smaller, lighter and more efficient than a lead-acid battery.

• true

• false

Which statement is incorrect?

• A lead acid battery generally has multiple cells of 2.1V each

• A nicad battery may explode if allowed to overheat

• A lead acid battery is not rechargeable

• The charge rate of the battery should be monitored to avoid overheating

What is the purpose of the aircraft accumulator? Choose all that apply

• To store back up emergency electricity

• To provide an initial electrical power source for the starter motor

• To provide a continuous supply of electricity to the magnetos

• To continue to charge to the alternator throughout flight

What is the alternator run off?

• The battery

• The camshaft

• The engine

• The magnetos