Mechanisms

Question 1

What are the four types of mechanical movement

Answer 1

linear, rotary, reciprocating, and oscillating

Question 2

Second order lever example

Answer 2

Wheelbarrow

Question 3

First order lever example

Answer 3

See saw

Question 4

Example of third order lever

Answer 4

tweezers

Question 5

What does a bell crank linkage do

Answer 5

changes the direction of motion 90 degrees

Question 6

What is a push pull linkage

Answer 6

keeps the direction of motion the same

Question 7

What is a reverse motion linkage

Answer 7

reverses the direction of the force

Question 8

What is a cam

Answer 8

The rotating part

Question 9

What is a follower

Answer 9

the part which follows the gradient of the cam

Question 10

3 types of cam

Answer 10

pear, circle, snail

Question 11

3 types of follower

Answer 11

Knife edge follower,
Flat follower,
Roller follower

Question 12

properties of a knife edge follower

Answer 12

Good for precision
Not good for heavy loads
Tip wears easily

Question 13

properties of a flat edge follower

Answer 13

not good for precision
Good for heavy loads

Question 14

properties of a roller edge follower

Answer 14

medium precision
good for heavy loads

Question 15

Which gear will rotate faster - large or small

Answer 15

the smaller gear will rotate faster

Question 16

What is a rotary mechanical movement

Answer 16

moving around a circular path

Question 17

What is reciprocating mechanical movement

Answer 17

moving back and forwards on a straight line

Question 18

What is oscillating mechanical movement

Answer 18

swinging back and forwards