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. Which analogy is similar to an AC supply?

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.
The waves on the sea moving up and down at random.


Question 2. Which type of device is used to step up or step down an AC supply?

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


Question 3. What is the mains potential difference and frequency in the U.K?

110V, 50Hz.
230V, 50Hz.
230V, 60Hz.
110V, 60Hz.


Question 4. What is AC short for?

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


Question 5. Which analogy is similar to a DC 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.


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