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प्रश्न
Answer the following.
What do you understand by a complex machine?
उत्तर
Machines such as sewing machines or cars that have more than one moving part are called complex machines.
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संबंधित प्रश्न
What is the principle on which a machine works?
Name six simple machines. Give an example of each machine.
Write the relation between mechanical advantage, velocity ratio and efficiency.
Define Velocity Ratio
Define mechanical advantage (M.A.) of the machine.
Classify the following as a lever, a pulley and an inclined plane:
A wedge
Classify the following as a lever, a pulley and an inclined plane:
An opener
Classify the following as a lever, a pulley and an inclined plane:
A knife
Which machine will you use to do the following work? Write their type.
To cut vegetables.
Why is this so machines have to be maintained?
