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प्रश्न
What care would you take to increase the life span of a machine which you use?
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उत्तर
Taking care of machines: Some of the ways in which machines should be cared for are given below:
- Machines should be kept in a clean environment, which is free from dust and moisture.
- When not in use, machines should be kept covered to prevent the collection of dust on them.
- Machines made of iron should be protected from rust by coating them with paint.
- The moving parts of a machine should be regularly oiled with good-quality machine oil to reduce friction and wear and tear. The above care of machines increases their life.
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संबंधित प्रश्न
State whether the following statement is True or False.
A boy does work while pushing a wall.
Answer the following.
What is a machine?
What is an inclined plane?
Give an example where a machine is used to obtain gain in speed.
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Establish a relationship between efficiency, M.A., and V.R.
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
Simple machines makes work easier by trading ______ for force.
Name a machine for each of the following uses:
- to multiply the force,
- to change the point of application of force,
- to change the direction of force,
- to obtain the gain in speed.
