A small electric hairdryer has an outer case made of plastic. The following information is printed on
Question:
A small electric hairdryer has an outer case made of plastic. The following information is printed on the case:
a. Explain the meaning of these terms:
i a.c. only
ii. 50 Hz
b. The hairdryer does not have an earth wire. Instead, it is double insulated. Explain what this means.
c. What current does the hairdryer take?
d. The hairdryer is protected by its own fuse.
i. What is the purpose of the fuse?
ii. Given a choice of a 3 A or a 13 A fuse for the hairdryer, which would you select, and why?
e. If the hairdryer were used in a country where the mains voltage was only 110 V, what difference would this make, and why?
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a i AC only means that the hairdryer can only be used with an alternating current AC electrical supp...View the full answer
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