Sustainable Manufacturing Answer all Questions This section contains long answer questions relating to sustainable manufacturing. Question No: 5 (15 Marks) Using suitable examples and references, discuss the Life cycle analysis of an automobile part. Question No: 6 (15 Marks). Us...
19 Aug 2020Sustainable Manufacturing Answer all Questions This section contains long answer questions relating to sustainable manufacturing. Question No: 5 (15 Marks) Using suitable examples and references, discuss the Life cycle analysis of an automobile part. Question No: 6 (15 Marks). Us...
19 Aug 2020Figure: 7 and 8 shows different types of keys used for commonly used locks Bow Bow Shoul der Shoulder Post Shank Bit Blade Bit Key Pin TumblerWater Flat Lever Double Sided Wafer Figure: 7 Figure: 8 a) Which manufacturing method is suitable for making each type? b) How will you m...
19 Aug 2020Calculate and plot the shear stress distribution along the cross section (shown in the figure) at mid span, if the beam is loaded the same as the previous problem. The upper flange has 2. the dimensions 180mm x 20mm, web 20mm x 150mm and the lower flange, 200mm x 20mm. The cross...
19 Aug 2020A simply supported beam shown in the figure has a cross section built up using different sections as shown in the same figure. The sections are held together using bolts. If the longitudinal spacing between the bolts is 75mm, calculate the shear force through each bolt (at a dist...
19 Aug 2020Calculate the strain energy stored in a simply supported beam shown in the figure 2a. The cross section of the beam is as shown in figure 2b. Also calculate the strain energy stored due to shear loading in the beam. [12] 5kN 5kN - SKN T SKN 150 mm 20 mm 20 mm [20 mm 20 mm 150 mm
19 Aug 2020Solve the initial value problem x(t) - 2y (t) = lit, y (t) 2y (t) - 4x (t) = -4t-2, x10=4, y (0)=-5 Answer; x (t) = 3 e 4t et y(t) = -beut e2t_2t
19 Aug 2020The critical stress intensity (K) for a material for a component of a design is 25 MPa. What is the applied stress that will cause fracture if the component contains an internal crack 3.3 mm long? Assume Y = 1. 4) What is the largest size (mm) internal through crack that a thick...
19 Aug 2020A plane wall is a composite of two materials, A and B. The wall of material A has uniform heat generation q =1.5 10A =75W/m.K, and thickness LA = 50 mm. The wall material B has no generation with KB 150 W/m. K and thickness LB =20 mm. The inner surface of material A is well insul...
19 Aug 2020Stainless steel (k-18 W/m K) fin has a circular cross-section area with a diameter of 1 cm and a length of 9 cm. the fin is attached to a wall that has a temperature of 250 °C. The fluid surrounding the fin has an ambient temperature of 50 C and h=10W/ m K. the end of the fin is ...
19 Aug 2020By using relation of torque T equals to summation of internal shearing stress t for area A, and shearing stress t varies linearly with radial position in the cross-section, derive the elastic torsion formula for circular rod. (5 marks) Tax Figure 5.1: Cross-section of rod subjec...
19 Aug 2020By using relation of torque T equals to summation of internal shearing stress t for area A, and shearing stress t varies linearly with radial position in the cross-section, derive the elastic torsion formula for circular rod. (5 marks) Tax Figure 5.1: Cross-section of rod subject...
19 Aug 2020By using relation of torque T equals to summation of internal shearing stress t for area A, and shearing stress t varies linearly with radial position in the cross-section, derive the elastic torsion formula for circular rod. (5 marks) Tax Figure 5.1: Cross-section of rod subjec...
19 Aug 2020NO Date Dote Question I 3.83 - A 2.2mm diameter and 10m long electric wire is fightly wrapped with a lmm thick plactic cover whose thermal conductivity is too 15 w/m.k. Electrkal measurements indhote that a current of 13 A passes through the wire and there is a roltage drop of sy...
19 Aug 2020Shaft ABC is made of aluminium with Modulus of rigidity G - 27 GPa, and subjected to torsion at disks A, B and C of different magnitudes. It is supported by smooth bearings. Part AB is solid with 60 mm diameter, while part BC is hollow with 30 mm inner diameter and 60 mm outer di...
19 Aug 2020Stainless steel (k=18 W/m K) fin has a circular cross-section area with a diameter of 1 cm and a length of 9 cm. the fin is attached to a wall that has a temperature of 250 °C. The fluid surrounding the fin has an ambient temperature of 50 C and h=10W/ mK. the end of the fin is c...
19 Aug 2020For liquid water it was assumed that the specific heat at constant pressure equals to that at constant volume, estimate the percentage error for this assumption for liquid water at water at 10 °C is (87.9 x 10° K), while the isothermal compressibility equals to (47.81 x 10° bar )...
19 Aug 2020A current of 200 A is passed through a stainless-steel wire [k=19 W/m. Cj 3 mm in diameter. The electric resistance of the wire is 0.099 12. and the length of the wire is 1 m. The wire is submerged in a liquid at 110-C and experiences a convection heat-transfer coefficient of 4 ...
19 Aug 2020For the following IC engine exhaust valve in guide, shown below: valve guide HB-del IC engine exhaust valve in guide Find type of shown fit Valve size tolerance and also the guide tolerance Find the Maximum and Minimum allowance between the valve and guide.
19 Aug 2020A cantilever beam of length L - 5 m has a T cross-sectional area as shown in Figure 3.2. Assuming the beam is to be elastoplastic material with a yield SULIT SULIT strength of 330 MPa, determine the uniformly distributed load , kN/m) supported along the beam to cause plastic coll...
19 Aug 2020A steel bar is subjected to three combine loadings as shown in Figure 2.2. For the given dimension and loadings condition, determine the normal stress and shear stress at point a and b. (17 marks) 200 KN 8 KN 60 mm 22 mm 22 mm 50 mm 25 KN h=260 mm 30 mm 30 mm 120 mm 44 mm Figure...
19 Aug 2020Explain what is wrong in the following bearing disassembly process and explain with sketch how you can modify this disassembly. its will be hard todisasembly the shaft from thebearing Not s horp angleand Sl smaller shoft blem (4) [8 degrees] the shown I-beam of standard size (W ...
19 Aug 2020CU TOUT OF surface roughness N10 indicates a roughness of: (A) 6.32 um (B) 12.5 um (C) 25 um 2- The following measuring device is used to measure: (A) Surface hardness (B) Surface coating thickness (C) Surface finisi 3- The shafts supported on Rolling bearings must be mounted wit...
19 Aug 2020TIPLE-CHOICE PROBLEMS:(One mark per answer) the Letter Beside the Most Correct Answer in the Questions Below.) bstance that has a fixed chemical composition throughout is called nce. (a) a pure (b) an ideal (c) an incompressible (d) a compressible. = devices that convert heat to ...
19 Aug 2020NUMERICAL PROBLEMS: (Answer these problems in the space allotted.) 4 An inventor claims to have invented a heat engine that develops a thermal efficiency of 75 percent when operating between two heat reservoirs at 1100 K and 300 K. Is there any truth to his claim?
19 Aug 2020what would be the ideal stainless steel strainer in terms of hole size, wire size, rectangle/ square orientation. You need to say 1. hole size in microns 2. Rectangle or square opening 3. Thickness of wire 4. Which type of stainless steel is preferred for kitchen use.
19 Aug 2020Refrigerant-134a enters a 28-cm diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. The refrigerant gains heat as it flows and leaves the pipe 180 kPa and 40°C. Determine (a) the volume flow rate of the refrigerant at the inlet, (b) the mass flow rate of the ref...
19 Aug 2020The egg is of the Student: An ordinary egg can be approximated as a 5.5-cm-diameter sphere The nitially at a uniform temperature of 8°C and is dropped into boiling water at for Taking the properties of the egg to be p=1020 kg/m and c-3.32 kjſke determine how much heat is transfer...
19 Aug 2020Derive the governing differential equation of motion of a double pendulum. Solve the derived differential equation and plot the values of 0, and with respect to time. 10, 11, m 12, m2 When represented in a matrix form, the differential equations of motion for the above system is ...
19 Aug 2020on the relative atomic massed (47.87. 16.00) and mass absorption coefficient (200 cm /g. 11.5 cm/g) for Ti and O respectively, calculate the mass absorption coefficient for Tio, (density = 4.23 g/cm)
19 Aug 2020cylinder = 5L w = 400 KJ ulated piston-cylinder device contains 5 L of saturated liquid water at a ot pressure of 175 kPa. Water is stirred by a paddle wheel while a current 8 A flows for 45 min through a resistor placed in the water. If one-half of the liquid is evaporated duri...
19 Aug 2020One kilogram of R-134a fills a 0.1450 m rigid container at an initial temperature of -40°C. The container is then heated until the pressure is 200 kPa. Determine the initial pressure and final temperature.
19 Aug 2020Name of the Student: ID # 9. A fan is to accelerate quiescent air to a velocity of 10 m/s at a rate of 4 mis. Determine the minimum power that must be supplied to the fan. Take the density of air to be 1.18 kg/m³.
19 Aug 2020Engineering materials are often placed in various service conditions, such as different status of mechanical stresses and temperatures. (a) Suggest two types of tests to illustrate how to estimate the lifetime or cycles of the engineering materials under different service conditi...
19 Aug 2020There are different types of stainless steels, among which the precipitation-hardened martensitic stainless steel has the highest strength. (a) Explore how the phenomenon of peak aging and over aging occurs, and why the size of the precipitates has a great impact on the strength ...
19 Aug 2020Figure Q1 below shows the equilibrium phase diagram of Lead (Pb)-Tin (Sn) alloy system. 327°C 300 Liquid 183°C Temperature (°C) 61.9 97.8 60 80 100 (Sn) (Pb) Composition (wt% Sn) (a) Figure Q1 The equilibrium phase diagram of Lead (Pb)-Tin (Sn) alloy system At a temperature of 2...
19 Aug 2020The table shows the solidification temperatures for the various alloys of metal A and metal B. The melting point of metal A is 1083°C and the melting point of metal B is 1453°C. % of metal B in alloy 10 20 30 40 50 60 70 80 90 Start of solidification (°C) 1160 1220 1270 1320 1350...
19 Aug 2020Consider 3000g of steel containing 99.8wt%-Fe-0.20 wt% C, cooled to a temperature just below the eutectoid, determine the following Composition (at% C) 15 10 16000 1538°C - 1493°C 1400 2500 1394°C 7 1 1200 1147°C 2.14 4.30 y, Austenite Temperature (°C) Temperature (°F) 912-c y F...
19 Aug 2020A heat pump system operate condenser pressures are 2 a volumetric capacity of 12 m/h, rates with refrigerant R134a. The evaporator and .2 and 10 bar respectively, and the compressor has a a) Draw the ideal cycle for the Ideal Coefficient of Performance (COP). il cycle for the sys...
19 Aug 2020A steel rod is 0.5 long with 0.01m diameter and 40 W/m°C thermal conductivity. It is attached to a large tank at constant temperature of 400 °C. The rod is dissipating heat by convection into ambient air at 20°C with heat transfer coefficient of 10 W/m2°C. Suppose the heat loss f...
19 Aug 2020Construct the stiffness matrix K and mass matrix M for the spring-mass system on the left hand side. 2. Find the angular frequencies and mode shapes (eigenvectors) of the system. And construct the orthonormal modal matrix Q. when ne te 3. By assuming X-QY, write down the independ...
19 Aug 2020Direction of flow A viscous, imcompressible fluid flows between the two infinite, vertical, parallel plates as shown on the right. Please find an expression for the pressure gradient in the direction of flow. Express your answer in terms of the mean velocity.
19 Aug 2020An incompressible, viscous fluid is placed between horizontal, infinite, parallel plates as is shown in the figure. The two plates move in opposite directions with constant velocities, U and U2, as shown. The pressure gradient in the x direction is zero, and the only body force i...
19 Aug 2020A pico hydro turbine test set comprises a pump, with appropriate instrumentation, which is able to provide a variable flow and head to the turbine which has a diameter of 0.14 m. A dynamometer brake mechanism and r.p.m. counter are used to determine the turbine mechanical output....
19 Aug 2020A program is required to construct a data structure for different types of metal tubes manufactured by a certain company. Each type has a reference number, a string representing the metal, a quantity, and a unit price. The following depicts the information for five sample types....
19 Aug 2020A disk with radius r is rotating with a constant angular speed ωr around axis CD, at the same time, axis CD is rotating with a constant angular speed ωe around the vertical axis. Determine the acceleration of the top point A on the edge of the disk.
19 Aug 2020Liquid water flows at a velocity of 1.5 m/s in a brass tube having 7.0 mm inside diameter. The tube wall is maintained at a temperature of 115 °C, and the average bulk temperature of the water at entry is 98 °C. a) Determine the flow regime. [3 marks] b) Discuss the heat-transfer...
19 Aug 2020A solid circular shaft 4 m long, with a radius of 20 mm is subjected to a constant torque of 1.2 kNm. If the shear modulus, G, is 80 EN mm the maximum shear stress was found to be 95.6 N/mm and the angle of twist was 13.7º. The solid shaft is to be replaced with a hollow shaft of...
18 Aug 2020For the beam with recta height h = 75 mm in Figure Q3: with rectangular cross-section with dimensions base b = 50 mm and a) Find the reactions at the supports A and B if L = 0.15 m. [4 marks] b) Construct the shear force and bending moment diagrams. [10 marks] c) Calculate the ma...
18 Aug 2020Write a program that reads a file named "users.txt", which contains the data shown below. The first column denotes the hour of day, the second denotes the measured temperature, and the last column represents the humidity as a percentage. After reading the data into a matrix, the ...
18 Aug 2020