Snapquiz - AC vs DC

Question 1. If an AC supply flows back and forth 3,000 times per minute what is its frequency?

180,000Hz.
3,000Hz.
60Hz.
50Hz.

Question 2. What is AC short for?

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

Question 3. Why do we use AC for mains electricity?

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

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. What is DC short for?

Direct Current.
Dangerous Current.
Device Current.
Dilute Current.

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