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प्रश्न
What is the efficiency of an ideal machine?
उत्तर
The efficiency of an ideal machine is 1 (or 100%).
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संबंधित प्रश्न
What do you understand by a machine?
What is the purpose of a jack in lifting a car by it?
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Give an example of the following uses of a machine:
to obtain gain in speed
Define Velocity Ratio
Define mechanical advantage (M.A.) of the machine.
Write an expression for the mechanical advantage of an inclined plane.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
Give an example of the following use of a machine to change the direction of force.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
