Simple gear trains (AQA GCSE Design and Technology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a gear essentially described as?
What is a gear essentially described as?
A toothed wheel connecting to a shaft
Which gear receives the original power input and starts the movement?
Which gear receives the original power input and starts the movement?
Driver gear
When two gears are connected in a simple gear train, how do they rotate?
When two gears are connected in a simple gear train, how do they rotate?
In opposite directions
What big advantage do gears have over pulley systems?
What big advantage do gears have over pulley systems?
Meshing teeth prevent slipping
What is the main job of an idler gear?
What is the main job of an idler gear?
Change the direction of rotation
Does an idler gear change the output speed of a gear train?
Does an idler gear change the output speed of a gear train?
No, it doesn't change speed at all
What is the key feature of compound gear trains?
What is the key feature of compound gear trains?
Two gears fixed on the same shaft
What is the formula for velocity ratio?
What is the formula for velocity ratio?
Driven teeth ÷ Driver teeth
If velocity ratio is 4:1, how many times does the driver turn for each driven turn?
If velocity ratio is 4:1, how many times does the driver turn for each driven turn?
4 times
How do you calculate total VR for compound gear trains?
How do you calculate total VR for compound gear trains?
Multiply individual VRs together
How do larger gears with more teeth rotate compared to smaller gears?
How do larger gears with more teeth rotate compared to smaller gears?
Slower
When a small gear drives a large gear, what happens to force and speed?
When a small gear drives a large gear, what happens to force and speed?
Slower speed, higher force