UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - PROPERTIES OF MATTER AND ACOUSTICS - 7BPH1C1 - SLOT I

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ALAGAPPA UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020

FIRST SEMESTER SLOT – I

PROPERTIES OF MATTER AND ACOUSTICS 7BPH1C1

Total Marks: 25                                                                                  Time: 1.0 Hr

SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks

ANSWER ALL THE QUESTIONS

1. Define elasticity.

2. State Hooke’s law.

3. Define torsion of a body.

4. Define Poisson’s ratio.

5. Contrast stress and strain.

 

SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks

ANSWER ANY THREE

6. Discuss work done in deforming a body.

7. Derive the relation between three elastic moduli.

8. Derive the expression for torque per unit twist of a cylindrical body.

9. Explain how the torsion pendulum is used in finding rigidity modulus of a material.

10. Discuss different moduli of elasticity.