Important questions for Simple Machine for Grade VIII
- Define simple machine .
- What is meant by complex machine ? Give examples .
- Write the advantages of a simple machine .
- Write the types of simple machine .
- State the principle of simple machine .
- Define output work and input work .
- What is meant by perfect or ideal machine ?
- Define load , effort and fulcrum .
- What is effort and load distance ?
- Define Mechanical advantage . Write its formula .
- Define velocity ratio .
- Define efficiency.
- M.A. of machine is 3 . What does it mean ?
- V.R. of a machine is 5 . What does it mean ?
- The efficiency of simple machine is 80% . What does it mean ?
- Write the method to increase the efficiency of simple machine .
- Define lever . Write its type .
- Define first , second and third class lever with diagram . Give their example .
- Write the advantages of first , second and third class lever .
- Define pulley .
- Write the types of pulley .
- Define fixed , movable , mixed pulley with diagram .
- What is inclined plane ? Give example and diagram .
- Define wheel and axle with example and diagram .
- Define screw with example and diagram .
- What is wedge ? Give example and diagram .
- Which simple machine is called a continuous lever ? Why ?
- Scissors is called simple machine . Why ?
Some useful links : Important Model Question paper biology |HSEB | grade XII| , Motion Important questions | Grade VIII