Snapquiz - AC vs DC

This is the Snapquiz on AC vs DC. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. Why do we use AC for mains electricity?

It's easy to generate and can be distributed efficiently.
It's the agreed international standard way to generate electricity.
AC electricity flows back and forth from the supply.
It's less dangerous than DC.


Question 2. What is AC short for?

Actual Current.
Actuating Current.
Additional Current.
Alternating Current.


Question 3. Which analogy is similar to an AC supply?

The waves on the sea moving up and down at random.
The tide regularly coming in and going back out again.
The wind blowing in different directions every day.
A river flowing in the same direction all the time.


Question 4. Which type of device is used to step up or step down an AC supply?

A transducer.
A transcriber.
A transmitter.
A transformer.


Question 5. Which analogy is similar to a DC supply?

The tide regularly coming in and going back out again.
A river flowing in the same direction all the time.
The waves on the sea moving up and down at random.
The wind blowing in different directions every day.


If you would like to track your scores, please enter your preferred first name into the box (please note, this uses cookies to store the data on your computer/phone/tablet - please see the FAQ for more information). Alternatively, if your teacher has given you a code starting with a # symbol, you can enter that:


Snapquiz© CJ Thornton    Terms and Conditions    Privacy
Teachers


Log out