Snapquiz - AC vs DC

Question 1. What is AC short for?

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

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

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

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

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

Question 4. What would a DC supply look like on an oscilloscope?

A wave going from positive to negative over time.
A curved line starting at a high positive potential difference then steadily falling to zero.
A straight line remaining at a single non-zero potential difference over time.
A straight line remaining at a potential difference of zero over time.

Question 5. What is the mains potential difference and frequency in the U.K?

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

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: