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
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Which of the following is NOT considered a type of simple machine?
Lever
Gear
Wheel
Pulley
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Which type of simple machine consists of a rigid bar pivoted on a fulcrum?
Pulley
Lever
Gear
Wheel
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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
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What is the primary function of a pulley?
To change the direction of force
To multiply force
To generate electricity
To store energy
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Which type of pulley has a fixed axis and changes the direction of force?
Fixed pulley
Movable pulley
Compound pulley
Simple pulley
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Gears are primarily used for:
Changing colour
Transmitting power
Generating heat
Absorbing sound
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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
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Where might you find levers in everyday life?
In aeroplanes
In playgrounds
In microwaves
In refrigerators
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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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