Mechanical Control System

Question 1

In what devices are ratchets useful

Answer 1

• fairground roller coaster

- a winch in a water well

Question 2

Ratchet and pawl

Answer 2

A gear mechanism that can lock to prevent a loaf from rolling backwards

Question 3

Step two of disc brake system

Answer 3

Brake fluid from master cylinder forces and equal pressure through the whole system into the Pistons on each wheel

Question 4

Step 3 of disc brake system

Answer 4

Piston in turn squeezes two brake pads mounted on the calipers against the disc, which is mounted on the wheel

Question 5

Step 4 of disc brake system works

Answer 5

Friction between the pads and the disc slows the car, causing the wheels to slow down, which is on the wheel

Question 6

Rim brakes

Answer 6

Brakes that use brake blocks or brake shoes so that a bicycle wheel, causing it to slow down and come to a stop

Question 7

Cleat

Answer 7

A simple device used to clamp and hold a rope securely

Question 8

Jam cleat

Answer 8

Wooden or metal projection with two arms, or horns around which you which you wrap a rope to fasten it

Question 9

Cam cleat

Answer 9

Two curved halves

Question 10

Examples of jam cleat

Answer 10

Used to tie boats to the dock

Question 11

Examples of cam cleat

Answer 11

Pinches the rope to stop it moving backwards