G.K.BHARAD INSTITUTE OF ENGINEERING

SUBJECT CODE (2110011)

QUESTION BANK AS PER GTU PAPERS

G.K.Bharad Inst. Of Engineering.

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G.K.BHARAD INSTITUTE OF ENGINEERING KASTURBADHAM (TRAMBA)

QUESTION BANK

CHAPTER – 3 ACOUSTIC AND ULTRASONIC

ACOUSTIC  26th December 2008 (1) What is Standard intensity? Give its value.

[1]

(2) Define reverberation time.

[1]

(3) The volume of the room is 600m3, the wall area of the room is 220 m2, the floor area is 120m2 And celling area is 120m2. The average sound absorption coefficient for wall is 0.03, for celling Is 0.8 and for floor it is 0.06, calculate reverberation time.

[3]

(4) What is meant by time of reverberation? Discuss Sabine’s formula.

[5]

(5) State any five factors affecting the acoustics of the building and give at least two remedies for each.

[5]

(6) What is the resultant sound level when a 70dB, sound is added to a 80 dB sound?

[4]

 18th March 2009 (1) Classify the sound waves based on frequency.

[1]

(2) Define reverberation time.

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(3) The volume of room is 1500m . The wall area of the room is 260m , the floor area is 140m and The celling area is 140m2. The average sound absorption coefficient for wall is 0.03, for the ceiling Is 0.8 and for the floor is 0.06. Calculate the average absorption coefficient and the reverberation time. [3] (4) Discuss the various factors affecting the acoustic of buildings and give their remedies

[4]

(5) Using Sabine’s formula explains how the sound absorption coefficient of a material is Determined?

[3]

 8th June 2009 (1) List & explain the characteristics of musical sound.

[3]

(2) Explain factor affecting acoustics of the building.

[3]

 9th September 2009 (1) Define a) Loudness b) Echo

[2]

(2) The reverberation time is found to be 1.5 sec for an empty hall and it is found to be 1.0 sec, when a Curtain cloth of 20m2 is suspended at the centre of the hall are 10x8x6 m3. Calculate the coefficient G.K.Bharad Inst. Of Engineering.

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of absorption of curtain cloth.

[4]

(3) Explain the terms I) reflection ii) reverberation iii) absorption of sound energy and then allow Graphically only the nature of growth and decay of sound energy in a hall due to reverberation.

[7]

 1st January 2010 (1) Explain the various factors affecting the acoustics of building and give their remedies.

[4]

(2) What is the absorption coefficient? Explain how to determine the absorption coefficient.

[3]

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(3) A cinema hall has a volume of 7500 m , what should be the total absorption in the hall if the Reverberation time of 1.5 sec is to be maintained.

[2]

(4) What is the resultant sound level when a 70 dB sound is added to an 85 dB sound?

[2]

 30th March 2010 (1) Explain the method to determine the absorption coefficient of material.

[2]

 15th June 2010 (1) Give four factors which affect acoustics of building.

[2]

(2) Frequency range of audible sound wave is ___________

[2]

(3) Derive the Sabine’s formula for reverberation time.

[5]

(4) What are the characteristics of musical sound? Explain them in detail.

[4]

 27th November 2010 (1) Define absorption coefficient

[1]

(2) What is the frequency range of audible sound?

[1]

(3) Discuss various factors affecting the acoustics of buildings and give their remedies.

[7]

 3rd January 2011 (1) Define the reverberation time.

[1]

(2) Define sound system.

[1]

(3) A hall has volume of 7500 m3. What should be the total absorption in the hall if the reverberation time Of 1.5 second is to be maintained?

[2]

(4) What is meant by time of reverberation? Discuss Sabine’s Formula.

[5]

 6th July 2011 (1) Differentiate loudness & intensity of sound. Explain Weber-Fechner law.

[6]

(2) A hall has volume of 13000 m3 and reverberation time 1.6 s. If 300 chairs are additionally placed in The hall, what will be the new reverberation time of the hall? (Absorption of each chair is 1.0 OWU) (3) Derive the expression for rate of absorption of sound energy inside a hall in terms of energy density.

G.K.Bharad Inst. Of Engineering.

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[5] [7]

 24th December 2011 (1) Name characteristics of musical sound.

[1]

(2) The frequency of ultrasonic waves is __________ 3

[1] 2

(3) A hall has a volume of 2265 m . Its total absorption is equivalent to 94.85 m of open window. What will be effect on reverberation time if audience fills the hall and there by increases the absorption? by another 94.85 m2.

[3]

(4) State and explain Weber-Fetcher law.

[3]

 1st Jan 2013 (1) Choose an appropriate option from the following. (i)

[2]

Frequency range for ultrasonic sound wave is (a) < 2 Hz (b) 20 Hz-20,000 Hz (c) > 20 kHz (d) 2 Hz – 10 Hz

(ii)

The intensity level (IL) of 0 dB corresponds to intensity of _______ (a) 100 W/m2 (b) 10-1 W/m2 (c) 10-10 W/m2 (d) 10-12 W/m2

(2) An auditorium has a volume of 2000m3 and its total absorption is equivalent to 92.9 m2 of open window. What will be the effect on reverberation time if an auditorium is full of audience and thereby increasing the absorption by another 92.9 m2 of open window.

[3]

(3) Derive an expression for total sound energy received by a wall segment per unit second in form of E v dS

[4]

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 14th June 2013 (1) Define reverberation time.

[1]

(2) Give four factors which affect acoustics of building.

[1]

(3) The area of interior surface of an auditorium is 3340 m2. Its reverberation time is 1.5 second. If the average Absorption coefficient of interior surface is 0.4 Sabine; find the volume of an auditorium.

[2]

(4) List and explain the characteristics of musical sound.

G.K.Bharad Inst. Of Engineering.

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(5) CHAPTER – 3 ACOUSTIC AND ULTRASONIC (6) AND ULTRASONIC CHAPTER – 3 ACOUSTIC

ULTRASONIC  26th December 2008 (1) Define plezo electric effect.

[1]

(2) Calculate the frequency to which piezoelectric oscillator circuit should be tuned so That a piezoelectric crystal of thickness 0.1cm vibrates in its fundamental mode to generate ultrasonic Waves. (Young’s modulus and the density of material of crystal are 80 giga Pascal And 2654 Kgm-3).

[4]

(3) Explain the term magneto striction and piezoelectric effect. Discuss any one method of Production of ultrasonic waves.

[5]

 18th March 2009 (1) Define ultrasonic waves.

[1]

(2) What is magneto striction method?

[1]

(3) What is SONAR?

[1] 6

(4) Calculate the capacitance to produce ultrasonic waves of 10 Hz with an inductance of 1 Henry.

[1]

(5) Draw the circuit diagram of Piezoelectric oscillator and explain the production of ultrasonic Waves using it.

[4]

(6) Explain the applications of ultrasonic.

[3]

 8th June 2009 (1) Explain the arrangement of determine the velocity of ultrasonic waves using requires figures. Also explain the application of the ultrasonic.

[7]

 9th September 2009 (1) Explain magneto striction and piezoelectric effect.

[5]

(2) What is an acoustic grating? describe an experimental method of determining the Velocity of ultrasonic waves in liquids.

[5]

(3) An ultrasonic source of 0.09 MHz sends down a pulse towards the seabed which returns after 0.55 sec. the velocity of sound in water is 1800 m/s. Calculate the depth of the sea and wave Length of pulse.

[4]

 1st January 2010 (1) Give the properties of ultrasonic waves.

[2]

(2) Describe the principle and the method of producing of ultrasonic wave by megnetostriction method.

[4]

(3) Calculate the thickness of a quartz plate needed to produce ultrasonic waves of frequencies. (i) 2 MHz (ii) 30 KHz (given  = 2650 kg/m3 and young’s modulus = 8x1010 N/m2) G.K.Bharad Inst. Of Engineering.

[2] 5

 30th March 2010 (1) A liquid column subjected to ultrasonic waves constitutes an acoustical grating, explain.

[2]

(1) Draw the circuit diagram of oscillator (pierce’s) and explain magnetostriction method to produce ultrasonic waves.

[4]

(2) Calculate the length of an iron rod which can be used to produce ultrasonic waves of 20 khz. Density of iron is 7.23 x 103kg/m3 and young’s modulus is 11.6 x 1010 N/m2.

[3]

(3) The ultrasonic pulse – echo is used to locate the position of defect in a steel bar of 40cm thick. If pulse arrival times from defective and non defective portions are 30µs and 80 µs respectively. Calculate the distance of defect from the top surface.

[4]

 15th June 2010 (1) What is piezoelectric method ?

[2]

(2) Calculate the frequency at which piezoelectric oscillator circuit should be tuned so that a piezoelectric Crystal of thickness 0.1 cm vibrates in its fundamental mode to generate ultrasonic waves. Given, Young’s modulus = 80 GPA and density of crystal material = 2654 kgm-.3.

[3]

(3) What is acoustic grating ? Explain the acoustic grating method to determine the velocity of ultrasonic Waves in liquids.

[5]

(4) Describe the various properties of ultrasonic.

[4]

 27th November 2010 (1) Expand the term: ‘SONAR’.

[1]

(2) What are ultrasonic waves? Explain with required circuit diagram the generation of ultrasonic waves with piezoelectric effect.

[7]

(3) Discuss the applications of ultrasonic waves.

[7]

(4) Calculate the frequency to which a piezo electric oscillator circuit should be tuned so that a piezo Electric crystal of thickness 0.1 cm vibrates in fundamental mode to generate ultrasonic waves. (Young’s Modulus and density of material of crystal are 80 Gpa and 2654 kg/m3)

[3]

 3rd January 2011 (1) Define piezoelectric effect

[1]

(2) An ultrasonic source of 0.09MHz sneds down a pulse towards the sea bed which returns after 0.55 sec. The velocity of sound in water is 1800 m/s. Calculate the depth of the sea and wavelength of the pulse. [4] (3) Explain the term magnetostriction and piezoelectric effect. Discuss any one method of production of Ultrasonic waves.

[5] 6

(4) Calculate the capacitance required to produce ultrasonic waves of 10 Hz with an inductance of 1 henry.

G.K.Bharad Inst. Of Engineering.

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 6th July 2011 (1) What is acoustical grating?

[2]

(2) Explain the principle, construction and working of magnetostriction method of producing ultrasonic waves.

[7]

 24th December 2011 (1) The wavelength of light transmitted through a liquid is 6000 Å. The first order angle of diffraction is 0.0460. Calculate the velocity of ultrasonic waves in the liquid. The frequency of the ultrasonic waves produced by the transducer is 2 MHz.

[2.5]

(2) Discuss at least three of the engineering applications of ultrasound.

[3]

(3) Draw circuit diagram of magnetostriction oscillator and explain the working.

[4]

 1th Jan 2013 (1) Write down properties and applications of ultrasonic waves.

[4]

(2) What is piezoelectric effect?

[1]

(3) Distinguish loudness and intensity.

[2]

 14th June 2013 (1) What is SONAR? (2) A liquid column subjected to ultrasonic waves constitutes an acoustical grating.

[2]

(3) An ultrasonic source of 1 MHz sends down a pulse towards the seabed which returns after 0.55 second. The velocity of sound in water is 1800 m/s. Calculate the depth of the sea and wavelength of the ultrasonic Sound.

[3]

(4) Discuss the piezoelectric method of production of ultrasonic waves with necessary circuit diagram.

[4]

.

G.K.Bharad Inst. Of Engineering.

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G.K.BHARAD INSTITUTE OF ENGINEERING KASTURBADHAM (TRAMBA)

QUESTION BANK

CHAPTER – 4 SUPER CONDUCTING MATERIALS  26th December 2008 (1) Define the transition temperature for superconductivity.

[1]

(2) Compare type - I and type – II superconductors.

[3]

(3) Discuss the properties of superconductors.

[5]

 18th March 2009 (1) Define superconductivity.

[1]

(2) What are type – I & type – II superconductors ?

[4]

(3) What is magnetic levitation ? Explain with its application.

[3]

(4) Give the difference between A.C. Josephson effect and D.C. Josephson effect.

[3]

 8th June 2009 (1) Give the comparison of class – I & class – II superconductors.

[4]

(2) Give the application of the superconductors.

[4]

(3) What is super conducting material ? List the properties of super conducting materials and explain each in detail.

 9th September 2009 (1) What are type – I & type – II super conductors.

[5]

(2) Explain Josephson effect and its application.

[5]

(3) Give few important applications of superconductors.

[4]

 1st January 2010 (1) Compare type – I and type – II superconductor.

[3]

(2) What is superconducting material ? List the properties of superconducting materials and explain in detail. [7] (3) Give the application of superconductor.

G.K.Bharad Inst. Of Engineering.

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 30th March 2010 (1) Show that the superconductors are perfectly diamagnetic in nature.

[2]

(2) Discuss the dependence of critical magnetic field and London penetration depth on temperature.

[5]

 15th June 2010 (1) ________is the formula which gives the relation of critical magnetic field and critical temperature.

[1]

(2) Give the differences between type I and type II superconductor.

[4]

(3) Explain Josephson effect and its applications.

[5]

 27th November 2010 (1) Define critical temperature

[1]

(2) Compare type 1 and type 2 superconductors.

[4]

(3) What are superconductors? Explain few important properties of superconductors.

[7]

(4) What is magnetic levitation? Explain in details with its applications.

[4]

(5) The critical temperature of Nb is 9.15 K. At zero Kelvin the critical field is 0.196 tesla. Calculate the critical field at 6 K.

[3]

 3rd January 2011 (1) Define the superconductivity.

[1]

(2) Compare type I and type II superconductors.

[2]

(3) Discuss the properties of superconductors.

[5]

 6th July 2011 (1) Compare Hard and soft superconductors.

[4]

(2) Define : Super conductivity

[2]

(3) Explain high Tc superconductor by giving one example.

[7]

 24th December 2011 (1) What is persistent current ?

[1]

(2) What is SQUID ? Explain with diagram.

[2]

(3) Discuss magnetic field effect and diamagnetic property of superconductor. Prove that m = -1 For superconductor.

[7]

 11th June 2012 (1) Distinguish between type-I and type-II superconductors.

[4]

(2) Show that superconducting material is diamagnetic in nature and obtain m = - 1

[4]

(3) Solve the following Numerical. The critical magnetic field at 5 K is 2 x 103 A/m in a superconducting ring of radius of 0.02 m. find out G.K.Bharad Inst. Of Engineering.

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Value of critical current.

[3]

 1st Jan 2013 (1) Explain the types of superconductor on the bases of its behavior with applied magnetic field.

[5]

(2) Write definitions of the three important factors to define a superconducting state ?

[3]

(3) The critical temperature of a superconductor is 78K and critical field is 0.518 T at 0 K. find the value of critical field at temperatures 25k and 58k.

[3]

 14th June 2013 (1) What is high temperature super conductor?

[1]

(2) Explain isotopic effect, critical magnetic field and Meissner effect for superconductors.

[6]

G.K.Bharad Inst. Of Engineering.

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G.K.BHARAD INSTITUTE OF ENGINEERING KASTURBADHAM (TRAMBA)

QUESTION BANK

CHAPTER – 5 LASER  26th December 2008 (1) State the properties of LASER.

[1]

(2) What is the life time of charge carrier in metastable state ?

[1]

(3) State the full form of LASER.

[1]

(4) Describe the construction and working of Nd-YAG LASER.

[5]

(5) Derive the relation between Einstein’s ‘A’ & ‘B’ coefficients.

[5]

 18th March 2009 (1) What is LASER?

[1]

(2) What is holography?

[1]

(3) Explain with a neat diagram the construction and working of a semiconductor laser.

[4]

(4) Discuss the merits and demerits of semiconductor laser.

[3]

(5) List out the difference between Stimulated emission and spontaneous emission.

[4]

(6) Application of laser in different field.

[3]

 8th June 2009 (1) List the application of the LASER.

[2]

(2) What is Einstein coefficient? Derive the relation between the Einstein coefficients. Also give the Difference between stimulated emission & spontaneous emission.

[7]

 9th September 2009 (1) Briefly explain spontaneous & stimulated emission.

[4]

(2) What is laser? How does it differ from an ordinary source of light? Describe the construction And working of CO2 laser with diagrams.

[7]

 1st January 2010 (1) Briefly explain stimulated emission.

[2]

(2) Explain (i) Population inversion (ii) Pumping (iii) Optical resonator.

[3]

G.K.Bharad Inst. Of Engineering.

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(3) Describe the construction and working of ND:YAG LASER with a suitable energy level diagram.

[4]

(4) State the characteristic of Laser. Explain the method of construction and reconstruction of hologram.

[7]

 30th March 2010 (1) Three level laser system is rare where as four level system is common, Explain.

[2]

(2) Distinguish between spontaneous emission and stimulated emission.

[4]

(3) Show that the ratio of Einstein ‘A’ coefficient for spontaneous emission to that of Einstein ‘B’ coefficient for stimulated emission is given by 8  hv3/c3.

[6]

(4) Draw the schematic diagram of hologram construction and explain the formation of hologram.

[4]

 15th June 2010 (1) What is population inversion?

[1]

(2) The active medium in Nd: YAG laser is _____

[1]

(3) In CO2 laser, the energy difference between two levels is 0.121 eV. Calculate the wavelength of radiation.

[3]

(4) Explain the construction and working of CO2 laser with a suitable energy level diagram.

[5]

(5) Establish the relation between Einstein’s coefficients.

[5]

 27th November 2010 (1) Expand the tern: ‘LASER’.

[1]

(2) Mention the properties of LASER.

[4]

(3) Prove that the ratio of spontaneous emission and stimulated emission is proportional to the cube of frequency.

[3]

(4) For InP laser diode, the wavelength of light emission is 1.55 micrometer. What is its band gap in eV?

[3]

(5) State the working principle of holography.

[1]

 3rd January 2011 (1) State the characteristics of LASER

[1]

(2) What is the transition temperature for mercury?

[1]

(3) Give two examples solid lasers.

[1]

(4) Explain the construction and working of Nd:YAG laser.

[5]

(5) Derive the relation between Einstein’s coefficients A and B.

[5]

 6th July 2011 (1) State the properties of LASER.

[4]

(2) Establish the relation between Einstein’s coefficients A and B

[4]

G.K.Bharad Inst. Of Engineering.

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 24th December 2011 (1) What is the life time of charge carriers in metastable state ?

[1]

(2) How does a laser beam differ from a point source of light ? Mention any two engineering applications of laser.

[3]

(3) What is an optical resonator cavity ? What role does it play in a laser ?

[2]

(4) What is active medium in No: YAG laser and CO2 laser ?

[2]

 11th June 2012 (1) Explain holography technique.

[3]

(2) State the difference between laser light and ordinary light.

[3]

(3) Explain the principle construction and working of Nd:YAG laser.

[5]

 1st Jan 2012 (1) What is full form of laser? Describe construction and working system of Nd:YAG LASER with a neat energy level diagram.

[6]

(2) Define : (1) Population Inversion (2) Stimulated Emission (3) life time (4) Metastable state.

[4]

 14th June 2013 (1) Give full form of LASER.

[1]

(2) Explain in detail: (i) Nd: YAG Laser

[5]

(3) What are population inversion and optical pumping?

[2]

(4) Applications of LASER.

[3]

G.K.Bharad Inst. Of Engineering.

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G.K.BHARAD INSTITUTE OF ENGINEERING KASTURBADHAM (TRAMBA)

QUESTION BANK

CHAPTER – 5 OPTICAL FIBER COMMUNICATION  26th December 2008 (1) Define total internal reflection.

[1]

(2) State the main components of optical fiber communication system.

[1]

(3) Discuses the advantages of optical fiber communication system over the conventional coaxial communication system.

[4]

(4) Derive the expression of acceptance angle & numerical aperture of an optical fiber.

[4]

(5) Calculate the NA, the acceptance angle of the fiber having 1= 1.48 and 2= 1.43.

[3]

 18th March 2009 (1) Define fiber optic system ?

[1]

(2) Discuss in detail the principle of optical fiber communication.

[4]

(3) What do you mean by acceptance angle and numerical aperture of a fiber?

[3]

(4) List out the difference between single mode fiber and multimode fiber.

[4]

 8th June 2009 (1) Properly explain the advantages of the fiber optics.

[3]

 9th September 2009 (1) Define Total Internal Reflection.

[1]

(2) What do you mean by acceptance angle and numerical aperture of a fiber ? Derive expression for them.

[7]

(3) Explain the different types of fibers based on (i) Material (ii) Mode (iii) Index profile.

[7]

 1st January 2010 (1) What is Kevlar ?

[1]

(2) Describe the construction of fiber optic cable and compare the advantages of fiber optic over metallic cable. (3) Give the condition to be satisfied for total internal reflection for the optical fiber. (4) An optical fiber core and its cladding have refractive indexes of 1.545 and 1.495 respectively. Calculate G.K.Bharad Inst. Of Engineering. 14

[7] [4]

the critical angle  c acceptance angle  in(max) and numerical aperture.

[3]

 30th March 2010

(1) State the requirements for infinite bandwidth optical fiber link.

[2]

(2) Distinguish between monomode and multimode optical fiber.

[5]

(3) Explain the self focusing property of Graded index optical fiber.

[4]

(4) A refractive index of core for step index fiber is 1.52, diameter is 2.9  m and a fractional difference of refractive index is 0.0007. It is operated at a wavelength of 1.3  m. Find the number of modes the fiber will support.

[4]

(5) Derive the expression of the numerical aperture of step index optical fiber. Show that it does not depend on the physical dimensions of the fiber.

[6]

(6) Find the core radius of step index fiber, necessary for single mode operation at 850nm. The refractive indices of core and cladding are 1.48 and 1.47 respectively.

[4]

 15th June 2010 (1) Define fiber optic system.

[1]

(2) An optical fiber has refractive index of core and cladding is 1.514 and 1.48 respectively. Calculate the acceptance angle and the fractional index change.

[4]

(3) Describe the construction of fiber optic cable.

[5]

(4) Give the differences between step index fiber and graded index fiber.

[4]

 27th November 2010 (1) State the working principle of fiber optics.

[1]

(2) Discuss in detail the advantages of fiber optics cable over metallic cable.

[7]

 3rd January 2011 (1) State the types of optical fibers.

[1]

(2) State the main components of the optical fibers.

[1]

(3) Discuss the advantages of optical fiber communication system over the conventional system

[5]

(4) Calculate the NA, the acceptance angle of the fiber having 1 = 1.52 and 2 = 1.45.

[2]

 6th July 2011 (1) A silica optical fiber has a core of refractive index 1.55 and a cladding of refractive index 1.47. Determine (i) the critical angle at the core-cladding interface (ii) the numerical aperture for the fiber and (iii) the acceptance angle in the air for the fiber.

[7]

(2) Define : Total internal reflection

G.K.Bharad Inst. Of Engineering.

[2]

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 24th December 2011 (1) Total internal reflection occurs when a light ray travels from _______to______.

[1]

(2) What do you understand by the term acceptance angle and acceptance cone ? Derive an expression for acceptance angle in terms of refractive indices of the core and cladding.

[2.5]

(3) Classify the fibers on the basis of refractive index profile, on the basis of modes of propagation and on the basis of materials.

[5]

(4) What is the numerical aperture of an optical fiber cable with a clad index of 1.378 and a core index of 1.546 ?

[2]

 11th June 2012 (1) The refractive indices of the core and the cladding materials are 1.55 and 1.51 respectively. calculate the numerical aperature of the optical fiber made from these materials.

[2]

(2) Explain advantages of optical fiber over a conventional metallic cable.

[4]

(3) Classify the optical fiber based on refractive index profile and modes of propagation.

[6]

(4) Define: Total Internal Reflection

[1]

 11th June 2012 (1) Explaing following configuration with figure : 

Multimode step-index fibre.



Multimode graded –index fibre

[6]

(2) Compute the value of numerical aperture, acceptance angle and relative refractive index for an Optical fiber with core refractive index 1.585 and cladding refractive index 1.515.

[4]

 14th June 2013 (1) Give two conditions for TIR.

[1]

(2) State the main components of the optical fiber.

[1]

(3) Derive the expression for acceptance angle & Numerical aperture of an optical fiber.

[4]

(4) An optical fiber core and its cladding have refractive indexes of 1.545 and 1.495 respectively. Calculate the critical angle øc, acceptance angle øin(max) and Numerical aperture.

[4]

(5) List the differences between step index and graded index optical fiber.

G.K.Bharad Inst. Of Engineering.

[4]

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G.K.BHARAD INSTITUTE OF ENGINEERING KASTURBADHAM (TRAMBA)

QUESTION BANK

CHAPTER – 7 ADVANCE ENGINEERING MATERIALS  26th December 2008 (1) What do you mean by metallic glasses.

[1]

(2) Discuss the properties, types and applications of metallic glasses.

[4]

(3) Short notes : Shape memory effect

[2]

 18th March 2009 (1) What are Nanomaterials?

[1]

(2) What are the four applications of Nanomaterials ?

[4]

(3) How will you distinguish metallic glass from ordinary glass ?

[3]

(4) Short notes on : (I) Types of biomaterial and their applications in the medical field.

[4]

(II) Properties of smart memory alloys.

[3]

 8th June 2009 (1) What is biomaterial ? List them.

[4]

(2) What is dielectric loss ? Explain in details.

[4]

(3) What is nano technology ? List the application of nano technology.

[4]

(4) Explain the principal of pseudo elasticity.

[3]

 9th September 2009 (4) What are metallic glasses? Explain the melt spinning technique to prepare metallic glasses.

[7]

(5) What is shape Memory Alloys (SMA) ? Explain the temperature induced and stress induced transformations in detail.

[7]

 1st January 2010 (1) Write the properties of metallic glasses.

[3]

(2) What is nanotechnology ? Write the applications of nanotechnology.

[3]

(3) What is biomaterial ? Write the types of biomaterial.

[4]

G.K.Bharad Inst. Of Engineering.

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(4) Draw only the material phase transformation diagrams for shape memory effect (Temp Vs Load) and Pseudo-elasticity (Stress Vs Strain ).

[4]

 30th March 2010 (1) Why nano materials exhibit different physical properties of materials from those at a large scale?

[2]

(2) Discuss the melt spinning process technique for preparing metallic glasses.

[5]

(3) Explain shape memory effect and pseudo elastic effect.

[6]

(4) State and explain the factors to select a biomaterial for prosthetic device.

[4]

 15th June 2010 (1) Give any two applications of biomaterials.

[1]

(2) Mention any five properties and applications of nanomaterials.

[5]

(3) Explain the types, properties of metallic glasses and melt spinning technique to prepare the metallic glasses.

[5]

 27th November 2010 (1) Name the different type of biomaterials.

[1]

(2) List the methods of production of nano materials.

[1]

(3) What are metallic glasses?

[1]

(4) Write the properties and applications of nano materials.

[7]

(5) Give the difference between metallic and non-metallic glasses.

[4]

(6) Describe shape Memory Alloy in detail.

[7]

 3rd January 2011 (1) Define the shape memory effect.

[1]

(2) Discuss the properties, types and applications of metallic glasses.

[5]

 6th July 2011 (1) What are the shape memory alloys? Explain shape memory effect and pseudo elasticity.

[7]

(2) What are nonmaterials ? Mention the methods of producing nanomaterials and explain any one of them. [7]

 24th December 2011 (1) Give brief account of temperature induced transformation.

[3]

(2) What are metallic glasses? How to prepare them? Write also the names of other techniques.

[7]

 11th June 2012 (1) Answer the following in detail. What is metallic glass ? Explain melt spinning method for the preparation of metallic glass. State properties and applications of Metallic glass. G.K.Bharad Inst. Of Engineering.

[7] 18

(2) Write a short note of Fullerene and carbon Nano Tube.

[5]

 1st Jan 2013 (1) Name the types of biomaterials and explain any one.

[3]

 14th June 2013 (1) Name the most commonly used methods for preparing nanomaterials.

[1]

(2) What is magnetic levitation?

[1]

(3) List applications of nanomaterials.

[3]

G.K.Bharad Inst. Of Engineering.

19