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All 4 Flashcards — Input, process, output
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Question
What are the three parts of a mechanical system?
Answer
Input, process and output. The input and output are motions; the process is the mechanism that converts one into the other.
Question
What four things can a mechanical process change?
Answer
The type of motion, its speed, its direction, or the force it delivers.
Question
Work a bicycle pump through the systems model.
Answer
Input: reciprocating motion from the hand. Process: a piston and washer in a cylinder with a one-way valve. Output: compressed air flowing one way into the tyre.
Question
What is feedback in a mechanical system?
Answer
The system sensing its own output and correcting it — an engine governor closing a throttle as speed rises, or a thermostatic valve closing as a radiator warms.
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Topic 3.3 hub
Mechanical systems
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