Systems: Electrical Quiz

Question 1 of 10

1. Question

1 point(s)

What type of electrical system is commonly used in light general aviation aircraft like the Cessna 172?

Direct Current (DC) with a single-bus or dual-bus system
Alternating Current (AC) with dual inverters
High-voltage AC system with step-down transformers

Question 2 of 10

2. Question

1 point(s)

What is the typical voltage and amperage of a light aircraft electrical system?

14V or 28V, with a 60-amp alternator
115V, 400Hz AC system
12V, 30-amp system

Question 3 of 10

3. Question

1 point(s)

What is the primary purpose of the alternator in an aircraft electrical system?

To provide continuous electrical power while the engine is running
To act as a backup power source when the battery is depleted
To regulate electrical loads during flight

Question 4 of 10

4. Question

1 point(s)

What is a bus bar, and what is its function in the electrical system?

A metal strip that distributes electrical power to various circuits
A device that prevents electrical overloads in the system
A backup power source for essential avionics

Question 5 of 10

5. Question

1 point(s)

What happens if the alternator fails in flight?

The battery takes over, but power is limited and will eventually deplete
The aircraft switches to an AC-based backup generator
The electrical system immediately shuts down

Question 6 of 10

6. Question

1 point(s)

How does the voltage regulator function in an aircraft’s electrical system?

It ensures the alternator outputs a stable voltage to prevent overvoltage or undervoltage conditions
It converts DC power to AC for the avionics system
It prevents electrical fires by cutting power during surges

Question 7 of 10

7. Question

1 point(s)

What is the primary indication of an electrical system failure in flight?

A warning light and/or an ammeter showing a discharge
A high-pitched whining noise from the alternator
A sudden drop in oil pressure

Question 8 of 10

8. Question

1 point(s)

How does the aircraft handle an overvoltage situation?

The voltage regulator shuts down the alternator to prevent damage (if the regulator is functioning properly)
A circuit breaker automatically resets to correct the voltage spike
The battery disconnects from the system until voltage stabilizes

Question 9 of 10

9. Question

1 point(s)

What should a pilot do if a circuit breaker pops in flight?

Reset it once; if it pops again, leave it out to prevent further damage
Immediately reset it to restore electrical power
Turn off all electrical equipment and manually reconnect the breaker

Question 10 of 10

10. Question

1 point(s)

In IMC conditions, what systems can a pilot rely on if the electrical system fails?

Pneumatic and engine-driven instruments such as the attitude indicator and airspeed indicator
The standby alternator, which provides indefinite backup power
The autopilot system, which continues operating using stored battery power

Aircraft Systems Course

Jon K