By Manoj Kumar

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6. Write down the factor affecting to design a good accousting of building. (V IMP) 7. What is echo? Explain. (IMP) 8. What do you sound. 9. Explain the Phenomena magnetostriction effect. 10. Explain the Phenomenon Piezoelectric effect. 11. Explain the Engineering application of Ultrasonic. 12. 13. Explain the Property of Ultrasonics. Explain the Phenomenon drilling and cold welding. 14. Explain the Flaw detection. 15. What do you mean by SONAR? Explain. m~an by Ultrasonic, Infrasonic, Supersonic and Audiable range of (IMP) (IMP) LONG ANSWER TYPE QUESTIONS :1.

Negative sign indicates that restoring force acting in opposite direction of the extension of spring. e F = - mg - ------(2) From equation (1) and (2) we get, mg=K R -------(3 ) Now displace the attached mass to the point D through a distance y below the equilibrium position marked by the point C. Then the total extension will become (e +y) and restoring force will be increase by F', \25\ Then according to Hook's Law, F' = - K (f +y) or F' K f - Ky = - --------( 4) Now subtracting the equation (1) from (4) we get, F' - F = - k f - ky - (- k f ) F' - F = - k f - ky + k f or F' - F = - ky --------( 5) If the mass m is released then the force F' - F will make the mass attached to return to the equilibrium position C.

IMP) Define ultrasonic and infrasonic. What is supersonic wares. (IMP) What do you mean by audiable sound? Define magnetastriction effect. Define Piezoelectric effect. What do u mean by SONAR. (IMP) SHORT ANSWER TYPE QUESTIONS :Explain absorption and reflection of sound. What do you mean by musical sound and Noise? What is reverberation, reverberation time. Explain How it can be controlled? (IMP) Explain the reverberation time. (IMP) \54\ Applied Pbysics-II 5. Write a short note on accousting of building.