Advertisements
Advertisements
प्रश्न
Why is this so machines have to be maintained?
Advertisements
उत्तर
A machine is composed of many parts. These parts rub against one another when in use. Due to this, these parts wear out with time. Also, soil and dust create more friction between the parts, which further deteriorates their condition. Even some parts get affected by weather and thus rust and erode. Because of these factors, the machine can become useless if proper care is not given to it. So, it is very necessary that we have proper equipment and methods for the maintenance of machines. Thus, machines should be sent for maintenance checks at fixed intervals of time to ensure their proper working.
संबंधित प्रश्न
State whether the following statement is True or False.
A boy does work while pushing a wall.
Can a machine have an efficiency of 100%? Give a reason to support your answer.
What care would you take to increase the life span of a machine which you use?
A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Write an expression for the mechanical advantage of an inclined plane.
How does a machine work?
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
What is a lever?
A pair of scissors is a _____ multiplier.
