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QLDEngineeringQuick questions
Unit 4: Machines and mechanisms
Quick questions on Gears, gear ratios and mechanisms for QCE Engineering Unit 4
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are gear ratio from tooth counts?Show answer
When two gears mesh, the number of teeth fixes how their rotations relate. The gear ratio for a single pair is:
What are compound gear trains?Show answer
A compound train has two gears fixed on the same shaft, so they share a speed. The overall gear ratio is the product of the individual stage ratios:
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