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प्रश्न
Select the correct alternative:
For an ideal machine, the efficiency is
विकल्प
greater than unity
less than unity
equal to unity
depends on the value of load
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उत्तर
equal to unity
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संबंधित प्रश्न
State whether the following statement is True or False.
In an ideal machine, work done on load is equal to the work done by effort.
A machine is 75% efficient’. What do you understand by this statement?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
Give an example of the following uses of a machine:
to obtain gain in speed
Define Mechanical advantage
Classify the following as a lever, a pulley and an inclined plane:
An axe
Classify the following as a lever, a pulley and an inclined plane:
A crane
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
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______ help us to make work easier.
