Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
Science 30 January 2000 Diploma Examination
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The expedition boarded a small submarine to continue their exploration<br />
of the Arctic.<br />
Use the following information to answer the next question.<br />
An Electrical Circuit Aboard the Submarine<br />
I II III<br />
IV<br />
Navigation instrument<br />
Fuse<br />
Power source<br />
26. An expedition member investigated the submarine’s electrical circuit because none of<br />
the navigational instruments worked. He found that one of the fuses was burned out.<br />
The burned out fuse is labelled<br />
A. I<br />
B. II<br />
C. III<br />
D. IV<br />
27. A diode is a device in an electric circuit. It permits electrons to travel in only one<br />
direction. A structure in the circulatory system that has a similar function to that of<br />
a diode in an electronic circuit is a<br />
A. vein<br />
B. valve<br />
C. artery<br />
D. capillary<br />
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