Machines
Appeared in 10 of the 11 available papers.
Appears almost every year — treat as core
Average per paper it appears in · 71 marks in total
48% of this chapter's 56 questions
21 questions carry a figure — practise drawing them
Question-type distribution
- Short answer27
- Numerical8
- Diagram7
- MCQ7
- Reasoning5
- Definition1
- Identification1
Most frequent topics
Showing 25 of 56 matching questions (71 marks).
25 questions
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
Case 1: Lata cuts a potato into two halves, using a cutter which belongs to a Class II lever. She needed effort E1. Case 2: Then she cuts one half of this potato again, but this time she needed effort E2. If E1 > E2 then:
To lift a load of 30 kgf, Suhas uses a single fixed pulley while Radha uses a single movable pulley. The displacement of efforts in both the cases are equal. In an ideal situation calculate the ratio of :
Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)
Three levers X, Y, Z of equal lengths are shown in the diagram.

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

Meera chose to use a block and tackle system of ‘9’ pulleys instead of a single movable pulley to lift a heavy load.
Given are two pulleys.

If Load = 48 kgf and efficiency is 80% then calculate :
A block and tackle system of pulleys has velocity ratio 4.
A metre scale of weight 50 gf can be balanced at 40 cm mark without any weight suspended on it.
