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QLDEngineeringQuick questions

Unit 4: Machines and mechanisms

Quick questions on Torque and rotational power for QCE Engineering Unit 4

4short 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 torque?
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Torque measures how strongly a force twists a shaft about its axis:
What are power in rotating systems?
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Power is the rate of doing work. For a rotating shaft, the power transmitted is the product of the torque and the angular speed:
What is power is conserved through a drive?
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An ideal gear train, belt or chain transmits power without loss, so the power in equals the power out:
What is step 3. geared output?
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The output speed is 290 rev/min290\,\text{rev/min}, a 5:15:1 reduction. The output angular speed is:

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