Advertisements
Advertisements
Question
Answer the following in short.
Mention any two methods by which we can take care of machines.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
What do you understand by a machine?
Define the term ‘work input’ and ‘work output’ in relation to a machine.
Answer the following.
What do you understand by a complex machine?
show a nut cracker In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E .
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.
The correct relationship between the mechanical advantage (M.A.), the velocity ratio (V.R.) and the efficiency (n) is ______.
Define Efficiency
Write an expression for the mechanical advantage of an inclined plane.
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
The idea of a simple machine originated with the Greek philosopher Archimedes.
