Download JNTUK B-Tech 2020 R19 CE 1103 Engineering Physics Model Question Paper

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[B19 BS 1103

I B. Tech I Semester (R19) Regular Examinations

ENGINEERING PHYSICS

(Common to CE & ME)

MODEL QUESTION PAPER

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TIME: 3 Hrs. Max. Marks: 75 M

Answer ONE Question from EACH UNIT

All questions carry equal marks

UNIT -1

1. a). What is a Bravais Lattice and explain the Bravais lattice in different Crystal systems. b). Deduce the Bragg’s Law.

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OR

1. a). How the nano materials can be produced by sol — gel method. b). Write about Carbon Nanotubes C). Discuss some important applications of nanomaterials.

UNIT - II

1. a). Define Reverberation and obtain the Sabine’s formula. b). Explain the requirements of an acoustics calling good hall

OR

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1. a). Explaining Magnetostriction effect, describe how the ultrasonics can be produced. b). Mention the application of ultrasonics.

UNIT - III

1. a). Distinguish between elastic and plastic. b). State and explain the Hooke’s law C). Discuss the bending moment of a beans

OR

1. a). Explain the stress — strain curve of an isotropic material b). What are the different types of moduli of solids and obtain their relations

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UNIT - IV

1. a). Define polarization and explain the different types of polarization possible in a dielectric b). Deduce the Claussius Mosotti equation and its significance in dielectrics.

OR

1. a). Define Magnetic susceptibility and give a classification of magnetic materials. b). Describe the Hysteresis exhibited by Ferromagnetic materials and explain it using a Suitable theory

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UNIT - V

1. a). Give the selection procedure of the active medium of laser device. b). With suitable diagrams, discuss the working principle, design and working of He — Ne laser system

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OR

1. a). What is the significance of Numerical Aperture of an optical fiber and obtain an expression for it. b). Discuss the sensor applications of optical fiber.

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