Dt test 2016 ♡

Description

Some practice questions for my end of topic test on mechanisms ♡
lauren ♥
Flashcards by lauren ♥, updated more than 1 year ago
lauren ♥
Created by lauren ♥ about 8 years ago
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Resource summary

Question Answer
What is up and down or in and out motion called ? ♡ Reciprocating motion ♡
What is swinging motion called ? ♡ Oscillating motion ♡
What is round and round motion called ? ♡ Rotary motion ♡
What is the gear ratio if gear A has 10 teeth and gear B has 30 teeth - explain ? ♡ 10:30 = 1:3 For each time gear B turns a full rotation (360) gear A turns 3 rotations (1080) ♡
If gear A goes in a clockwise direction, what direction does gear B go in ? ♡ Anti-clockwise direction ♡
What are the circular gears called and what motion is achieved with it ? ♡ Spur gears (?) - rotary motion ♡
What is the rectangular gears called and what motion is achieved with it ? ♡ Rack gears (?) - linear motion ♡
Name these types of gears ? ♡ Bevel-Edged gears ♡
Draw a class 1 lever and label force, load and fulcrum ? ♡ Place force on the lower side though ♡
Use a cross section drawing to explain the types of holes used when using a countersunk screw and name the three types of hole ? ♡
Name this tool and explain what it does ♡ It's a try square and it helps you measure where to make a mark on a material like wood ♡
Name this tool and explain what it does ♡ It's a tenon saw and it's used to cut straight through a material ♡
Draw a front view of the project and label the axle, cam, handle and cam follower ♡
How is motion achieved by moving the handle and then transferred to the object on top ? ♡ When you turn the handle you turn the axle which turns the cam using rotary motion - that makes the cam follower move in reciprocating motion which then causes the stick on top to move in reciprocating motion moving the object with it ♡
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