Final term weekly test revision questionnaire
Q1.a) what do you mean by efficiency of a machine?
b) what is an effort arm.
Q2.a) Define the term effort and load in relation to a machine.
b) what is a wedge? Write its use.
Q3.a) draw a neat labelled diagram of a hand pump. State it's class of lever. Write its mechanical advantage.
b) state the principle of a machine and explain it with the help of a suitable example.
Q4.a) define lever. Explain its types with the help of a suitable diagram.
b) mechanical advantage of a lever is 5. How much load can be lifted by applying an effort of 20 Newton? State the class of lever And draw its suitable diagram.
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