III B.Tech I Semester Regular Examinations,Nov/Dec 2009 BIOFLUIDS AND MECHANICS Bio-Medical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Differentiate: (a) Soft tissues and hard tissue.
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(b) Tendon in tension. (c) Cartilage and bone.
[5+5+6]
2. (a) Explain in detail the laminar and turbulent flow properties of blood in blood vessels.
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(b) Discuss the flow behavior of blood as it flows through aorta to vena cava. [8+8] 3. Explain the chemical and physical properties of blood and explain the effect of shear stress and hematocrit value on the viscosity of blood. [16]
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4. (a) With the help of a P-V curve of a lung, explain the normal breathing mechanism. (b) What are the lung mechanical parameters? Differentiate normal and abnormal respiratory states. [8+8] 5. Describe the mechanical properties: (a) Synovial fluid. (b) Protoplasm.
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(c) Mucus.
(d) Saliva.
[4+4+4+4]
6. (a) Discuss about the histology and mechanical properties of bone with examples. [8+8]
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(b) Write short notes on Arthritis, Avascular necrosis, Osteoporosis.
7. (a) Write a short note on steady and unsteady flow. (b) Determine the intensity of shear of oil having viscosity 0.1 Ns/m2. The oil is used for lubricating the clearance between a shaft of diameter 0.1m and its journal bearing. The clearance is 1.5mm and the shaft rotates at 150 r.p.m [4+12]
8. (a) Discuss about the motion of red blood cells in tightly fitted tubes (b) Discuss about the inversion of the FAHRAEUS-LINDQUIST effect in very narrow tubes. [8+8] 1
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1. (a) Explain briefly the distribution of RBC in narrow tubes.
[8+8]
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(b) Explain FAHRAEUS-LINDQUIST effect.
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III B.Tech I Semester Regular Examinations,Nov/Dec 2009 BIOFLUIDS AND MECHANICS Bio-Medical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
2. (a) Discuss briefly on composition and structure of articular cartilage and meniscus. (b) Briefly explain the functions of meniscus.
[8+8]
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3. (a) What are differences between solids and liquids? State Hooke’s law. Using stress- strain curve define elasticity.
(b) Define the terms: normal stress, normal strain, shear stress and shear strain. [8+8] 4. (a) Discuss about the composition and mechanical properties of collagen fibres.
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(b) Write a short note on the terms viscoelasticity and pseudo-elasticity critically? [8+8] 5. (a) Describe the process of airway mechanics. (b) List any five lung diseases and explain the causes for development of diseases. [8+8]
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6. Discuss about yield stress of blood. Which factors control the yield stress of blood? Justify that blood behaves like a Cassons fluid. Discuss the characteristics of blood plasma. [16] 7. (a) Differentiate between viscoelastic and elastic materials.
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(b) Explain and derive the expressions for stress-relaxation and creep of a Kelvin model. [4+12]
8. (a) Discuss the flow behavior of blood as it flows through aorta to vena cava. (b) Write a short note on mechanical heart valves. ?????
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[8+8]
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III B.Tech I Semester Regular Examinations,Nov/Dec 2009 BIOFLUIDS AND MECHANICS Bio-Medical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Write briefly about the inversion of the FAHRAEUS-LINDQUIST effect in very narrow tubes. What are the medical applications of blood Rheology? [16]
3. Write a short note on:
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(a) Articular cartilage and meniscus.
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2. State Newton’s law for flow of biological fluids. With reference to laminar flow, define resistance to flow. What are the factors which determine the resistance to flow? [16]
(b) Trabecular Bone and Cortical Bone. (c) Bone Modeling and Remodeling.
[6+5+5]
4. (a) Write a short note on the structure of articular cartilage and meniscus.
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(b) Discuss the mechanical properties of Trabecular Bone Tissue.
[8+8]
5. (a) Describe the construction and working of a Capillary viscometer. (b) Mention the advantages and disadvantages of a Couette viscometer.
[8+8]
6. With relevant sketches, explain the mechanical behavior of arterioles and its physiological significance. [16] 7. (a) Explain the instrument used to test a bio-viscoelastic fluid.
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(b) Using spring and dashpot draw Maxwell model and derive its basic governing equation. [8+8]
8. (a) What do you mean by respiration process? Explain lucidly mechanism of breathing and mechanics of Alveoli?
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(b) Explain why different parts of lungs have difference in ventilation and blood flow. [8+8] ?????
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III B.Tech I Semester Regular Examinations,Nov/Dec 2009 BIOFLUIDS AND MECHANICS Bio-Medical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Write a short note on :
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(a) Sigma effect. (b) Motion of red blood cells in tightly fitted tubes. (c) Cell-free layer.
[6+6+4]
2. Write a short note on :
(b) Anterior curciate ligament. (c) Histology of tendon.
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(a) Difference between ligament and tendon.
[5+5+6]
3. (a) Write a short note on air-way resistance?
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(b) Discuss about lung diseases by indicating their cause for development of diseases. [8+8] 4. Describe the Structure and mechanical properties of bone with examples. Explain what do you understand by Lubrication of Joints? [16] 5. (a) Explain the three features of viscoelasticity in detail
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(b) Explain the working principle of oscillating magnetic microrheometer. [8+8] 6. (a) Explain the working of any prosthetic heart valve. (b) Describe the operation of any one mechanical heart valve.
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(c) Compare the performance features of mechanical and tissue heart valves. [6+5+5]
7. Determine the wall shearing stress for a fluid, having a viscosity of 3.5 cP, flowing with an average velocity of 9 cm/s in a 3-mm-diameter tube. What is the corresponding Reynolds number? (The fluid density =1.06 g/cm3) [16] 8. (a) Describe the construction and working of a Couette viscometer. (b) List the advantages of a cone-plate viscometer. ?????
what do you understand by Lubrication of Joints? [16] · 5. (a) Explain the three features of viscoelasticity in detail · (b) Explain the working principle of oscillating ...
Perform a Chi-square test at .o5 level whether there is a significance difference ... (b) Derive formulae to find the mean and variance of the Binomial distribution.
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[8+8] · 7. (a) List out equipments used in pathology and blood bank departments of a · hospital. (b) Discuss about various blood groups present in humanbeings.
medical equipment. (b) Write a note on responsibilities of BME Department. [8+8] · 8. Discuss the sanitation procedures and laundry services with in a hospital.
Define and derive the equation for the vorticity of a flow. Hence prove that ... out from the leading edge to the trailing edge of a symmetrical airfoil. (b) State and ...
Check whether the following impedance functions are LC, RL or RC? (a) Z(s) = ... amplitude 5 V. Find autocorrelation function and energy spectral density. [8+8].
3. Regeneration is possible in the fixed-bias transistor flip-flop if the base-to-base · voltage gain exceeds unity. Verify that this gain condition is satisfied provided ...
Set No - 2. (b) Write about bus structures. ... (b) Explain time-shared common bus in detail. [8+8] ... (c) Asynchronous serial transmission with one stop bits · [16].
Consider a telegraph source having two symbols, dot and dash. The dot duration · is 0.2s.The dash duration is 3 times the dot duration. the probability of the dots.
2. (a) Explain why hardening by quenching is followed by tempering. (b) Only mechanical properties not physical properties can be altered by heat · treatment.
Describe the methods of manipulating DNA for gene cloning purpose. [16] · 5. What are transposons? and describe about the types of bacterial transposons. [16].
Young's modulus = 35 Ã 1010 Pa and the specific surface energy = 2 J/m2 · (b) Give a brief account on the various stages of creep rate with reference to design.
(a) What is surface texture? Explain components of surface texture. (b) Explain Ball type plug gauge to measure big bore diameter. [8+8] · 8. A Rotameter has been calibrated in lit/min for water. It is to be used for metering · brine solution of spec
All Questions carry equal marks · ***** · 1. Explain the microbial production of aminoacids with one example. [16] · 2. What are biofuels? How these are produced ...
1. Explain tree based indexing and hash based indexing techniques. [16] · 2. Explain the .... 1. Explain in detail the structure of B+ tree with an example · [16].
(a) What is Radix-64 format? Explain how both PGP and S/MIME perform the · Radix-64 conversion is performed. (b) Describe the five principal services that ...
Farm in Maharashtra, supplied with water from a dug well pumping for 4 h a day, are given below. Determine the required discharge. [16]. 7. AjntuWorld.in ...
... carry equal marks · ***** · 1. List eight major functions of an exhaust nozzle. .... plane. Show the internal layout for swallowed air to reach the engine. Explain.
Enumerate difference between growth and non-growth associated product kinetics. [16] · 7. Write a brief note on biosensors, and describe how they are used for ...
