Karnataka Diploma Applied Science Question Bank Chapter-1 MECHANIS

Unit 1 Mechanics

Part-A (2 marks questions)

1. Define unit of a physical quantity.
2. Define fundamental and derived units.
3. List supplementary units in SI systems.
4. Define least count of measuring instrument.
5. Define S.I units give two example of S.I, basic units.
6. Write the principle of vernier callipers and screw gauge.
7. Define least count of vernier calipers.
8. Define pitch of A Screw.
9. Define ZE and ZC in screw gauge.
10. Define Scalar quantity and give it's example.
11. Define vector quantity and give its example.
12. Write the relation between resultant and equilibrant.
13. State Law of parallelogram of vectors.
14. State conversion law of triangle of Forces.
15. State lami's theorem.
16. Define moment of force.
17. Write the two rectangular component of a vector
18. Right how momentum of force is measured.
19. Discuss why the handles of the doors or Windows are fixed at the end.
20. Define couple.
21. Define is momentum of couple.
22. Write how you measure moment of couple.
23. Define equilibrium.
24. Write the conditions of equilibrium when number of coplanar parallel forces acting on a body.
25. Define like and unlike parallel forces.

Part-B (5 marks questions)

1. Mention 7 basic units and two supplementary units of SI system.
2. Draw a neat diagram of vernier callipers and label its parts.
3. Draw a neat diagram of screw gauge and label its parts.
4. Explain parallel forces with their types.
5. List two types of moment of force. Write any three applications of couple.
6. Write the advantages of SI system.
7. Mention the difference between scalars and vectors.
8. State Converse law of triangle of Forces; write the line diagram and equation of Converse law of triangle of Forces.
9. State lamis theorem, write the line diagram and equation of lamis theorem.
10. Define moment of force, write the equation to measure moment of force and give its examples.

Part-C (6 marks questions)

1. Derive an expression for magnitude and direction of resultant of two forces acting at a point.
2. Write the conditions for equilibrium of coplanar parallel forces acting on a rigid body with equations and diagram.
3. Describe an experiment to verify lamis theorem.
4. Describe an experiment to verify the conditions of equilibrium of coplanar parallel forces using moment bar.
5. Describe an experiment to verify Converse law of triangle of Forces.
6. Describe an experiment to verify law of parallelogram of Forces.

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