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

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

Question 2. What is AC short for?

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

Question 3. Which type of device is used to step up or step down an AC supply?

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

Question 4. If an AC supply flows back and forth 3,000 times per minute what is its frequency?


Question 5. Which analogy is similar to an AC supply?

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

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