š Key Concepts
ā¢ Typical parts of a sound-powered telephone station (handset/headset, selector switch, terminal board, magneto/ringer)
ā¢ Which symbol in the diagram would represent the actual handset/headset that you speak and listen through
ā¢ Difference between a wiring/terminal component and the user interface component where the transmitter and receiver physically sit
š Think About
ā¢ On a real ship, where are the sound-powered transmitter and receiver physically located: inside the selector box, the wiring terminal strip, the magneto, or the piece you put to your mouth/ear?
ā¢ Looking at the shapes in the illustration, which labeled item most closely looks like the schematic symbol for a handset or headset capsule rather than a switch, dial, or junction box?
ā¢ Compare all four labeled items: which two seem to be controls or switches, which one is clearly a wiring point, and which one is the actual talking/listening device?
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Before You Answer
ā¢ Identify which label points to the handset/headset symbol (often drawn as an oval or capsule shape) rather than to a box, dial, or terminal strip
ā¢ Confirm that the option you choose is the only one that would reasonably contain both a transmitter and a receiver unit together
ā¢ Make sure you are not picking the selector switch or magneto/ringer ā those control circuits or signaling, but do not house the transmitter/receiver elements themselves