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Northern IrelandTechnology and DesignQuick questions
Mechanisms and motion
Quick questions on Gears and gear trains - CCEA GCSE Technology and Design
7short 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 is calculating the gear ratio?Show answer
The output speed follows from the ratio: $$
What are compound gear trains?Show answer
Compound trains are used where a big speed reduction and a big torque increase are needed, such as in a clock or a powered winch.
What is q1?Show answer
State the equation for the gear ratio of a simple gear train. [1 mark]
What is q2?Show answer
A 16-tooth driver meshes with a 48-tooth driven gear. Calculate the gear ratio. [2 marks]
What is q3?Show answer
For the gears in Q2, if the driver turns at 600 rev/min, find the output speed. [2 marks]
What is q4?Show answer
What is the purpose of an idler gear? [2 marks]
What is q5?Show answer
Why is a compound gear train used? [1 mark]
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