Simple Machines - JSS1 Basic technology Past Questions and Answers - page 1
What are simple machines primarily designed to do?
Generate electricity
Multiply force
Control temperature
Create motion
Which of the following is NOT considered a type of simple machine?
Lever
Gear
Wheel
Pulley
Which type of simple machine consists of a rigid bar pivoted on a fulcrum?
Pulley
Lever
Gear
Wheel
In which class of lever is the load located between the fulcrum and the effort?
First class lever
Second class lever
Third class lever
Fourth class lever
What is the primary function of a pulley?
To change the direction of force
To multiply force
To generate electricity
To store energy
Which type of pulley has a fixed axis and changes the direction of force?
Fixed pulley
Movable pulley
Compound pulley
Simple pulley
Gears are primarily used for:
Changing colour
Transmitting power
Generating heat
Absorbing sound
Which type of gear train is used to change the speed and torque of motion?
Simple gear train
Compound gear train
Rack and pinion
Worm gear train
Where might you find levers in everyday life?
In aeroplanes
In playgrounds
In microwaves
In refrigerators
What is the function of a second-class lever?
To balance weight
To change direction
To multiply force
To distribute load
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