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प्रश्न
What do you understand by a machine?
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उत्तर
A machine is a device that allows us to do work with less effort. Machines make our work easier to do. Machines have made our lives comfortable and faster.
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संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
Select the correct alternative:
For an ideal machine, the efficiency is
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What is an ideal machine?
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Classify the following as a lever, a pulley and an inclined plane:
A needle
Classify the following as a lever, a pulley and an inclined plane:
A crane
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
