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प्रश्न
What is the principle of an ideal machine?
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उत्तर
An ideal machine takes energy in one form and converts into another form without any energy losses. The work output is equal to the work input.
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संबंधित प्रश्न
With reference to the terms Mechanical Advantage, Velocity Ratio and efficiency of a machine, name and define the term that will not change for the machine of a given design.
Name a machine to multiply force ?
Mechanical advantage (M.A.), load (L) and effort (E) are related as ______.
State the incorrect statement:
‘The force needed to push a load up an inclined plane is less than the force needed to lift it directly’ Give a reason.
Name a machine which is used to multiply speed ?
Shows a lemon crusher.
- In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E.
- Name the class of lever

Complete the following sentence :
Mechanical advantage = ___________ × velocity ratio
Complete the following sentence :
A scissors is a ___________ multiplier.
Mention the advantages of using a machine.
