Q & A - Engineering

Q & A

• the Figure below let C =7Co If the preload is Fo=4000N and the additional axial load is F = 6000N what are the resultant tension in the bolt and the compression in the members the Figure below, let C =7Co, If the preload is Fo=4000N and the additional axial load is F = 6000N, what are the resultant tension in the bolt and the compression in the...
• The pressure P kPa volume V litres and temperature T in Kelvin of a mole of an ideal gas is related by the equation PV = 8.31T. Find the rate at which the volume is changing when The pressure P (kPa), volume V (litres) and temperature T (in Kelvin) of a mole of an ideal gas is related by the equation: PV = 8.31T. Find the rate at which the volume ...
• A steel has an endurance limit 0-1 500 MPa G 800 MPa yielding strength o -900MPa A component made with the steel takes a fluctuating stress whose stress ratio r=0.4, maximum stress A steel has an endurance limit 0-1 = 500 MPa, G 800 MPa, yielding strength o, -900MPa. A component made with the steel takes a fluctuating stress, whose stress ratio r=0....
• The v-belt transmission power P=7.5kw the belt speed V=15m/s The tension of the tight side is twice that of the loose side, namely F1=2F2 Try to find the tension of the tight side F1 the effective The v-belt transmission power P=7.5kw, the belt speed V=15m/s. The tension of the tight side is twice that of the loose side, namely F1=2F2. Try to find the tension of th...
• The diameter of an axle of installation gear is 80mm the wiu on gear is 80mm the width B of hub of the gear is 110m the material of gear and axle is steel, the torque thal joint transmits is The diameter of an axle of installation gear is 80mm, the wiu on gear is 80mm, the width B of hub of the gear is 110mm, the material of gear and axle is steel, the torque...
• A steel has an endurance limit strength 6 = 900MP2 A component ma stress whose stress ratio as an endurance limit az = 500 MP2 0 = 800 MPa yielding ose stress ratio r=0.4 maximum stress A steel has an endurance limit strength 6 = 900MP2. A component ma stress, whose stress ratio as an endurance limit az = 500 MP2, 0 = 800 MPa, yielding ose stress ratio r...
• A rod with a cross-sectional area of A and loaded in tension with an axial force of P 4000 lbf undergoes a stress of 0 P/A Using a material strength of 48 kpsi and a design factor of A rod with a cross-sectional area of A and loaded in tension with an axial force of P =4000 lbf undergoes a stress of 0 = P/A. Using a material strength of 48 kpsi and a ...
• A rod with a cross-sectional area of A and loaded in tension with an axial force of P 4000 lbf undergoes a stress of 0 P/A Using a material strength of 48 kpsi and a design factor of A rod with a cross-sectional area of A and loaded in tension with an axial force of P =4000 lbf undergoes a stress of 0 = P/A. Using a material strength of 48 kpsi and a ...
• In the Figure below let C If the preload is F-4000 and additional axial load is F 6000N what are the resultant tension in the bott and the compression in the members In the Figure below, let C If the preload is F-4000 and additional axial load is F 6000N, what are the resultant tension in the bott and the compression in the members? (...
• Check the welded strength of the weld connection under static load F and N 20 marks 2. Check the bolted strength of the bolt connection under static load F and Check the welded strength of the weld connection under static load F and N: (20 marks) 2. Check the bolted strength of the bolt connection under static load F and N: (20 ...
• Data from a viscometer suggest the following: Shea r stress Pa 1.72.74.86.5 Shear rate (S-') 200300470600 Is this a Newtonian behavior If not then what type of behavior might it be Data from a viscometer suggest the following: Shea r stress (Pa) 1.72.74.86.5 Shear rate (S-) 200300470600 Is this a Newtonian behavior? If not, then what type of beha...
• An alloy steel plate is subjected to a tensile stress of 120 MPa The fracture toughness of the materials is given to be 45 MPa Vm Determine the critical crack length to assure the plate will not An alloy steel plate is subjected to a tensile stress of 120 MPa. The fracture toughness of the materials is given to be 45 MPa Vm. Determine the critical crack length to...
• The v-belt transmission power P-7.5kw the belt speed V=15m/s The tension of the tight side is twice that of the loose side, namely F1=2F2 Try to find the tension of the tight side F1 the effective The v-belt transmission power P-7.5kw, the belt speed V=15m/s. The tension of the tight side is twice that of the loose side, namely F1=2F2. Try to find the tension of th...
• UNA KS force aretge arctgco Bolt deforming UNA KS). force aretge, arctgco Bolt deforming
• A pressure vessel has an internal diameter of I mand is to be subjected to an internal pressure of 2.75 N/mm above the atmospheric pressure Considering it as a thin cylinder and assuming efficiency A pressure vessel has an internal diameter of I mand is to be subjected to an internal pressure of 2.75 N/mm above the atmospheric pressure. Considering it as a thin cyli...
• A pressure vessel has an internal diameter of 1 m and is to be subjected to an internal pressure of 2.75 N/mm² above the atmospheric pressure Considering it as a thin cylinder and assuming efficiency A pressure vessel has an internal diameter of 1 m and is to be subjected to an internal pressure of 2.75 N/mm² above the atmospheric pressure. Considering it as a thin cy...
• L = 1 m; To = 0 °C; AT/dx1 = 0 at x = L; n = 24 of interior nodes h' = 0.01/m. To=25°C; p = 980** C = 490 and k = 54 W/m-K Initially, the thin rod is at 200 °C. dat Governing Equation 1. L = 1 m; To = 0 °C; AT/dx1 = 0 at x = L; n = 24 (# of interior nodes); h = 0.01/m. To=25°C; p = 980** C = 490 and k = 54 W/(m-K). Initially, the thin rod is at 200 °C....
• Number of grid points are given on the figure Approximate the temperature distribution using the governing equation and given Boundary Conditions Use Explicit and Implicit Methods for the Number of grid points are given on the figure. Approximate the temperature distribution using the governing equation and given Boundary Conditions. Use Explicit and Impli...
• What is relative acceleration of the point A that moves along the rim of the disk with a constant velocity vr The disk rotates in a plane of sketch about point What is relative acceleration of the point A, that moves along the rim of the disk with a constant velocity vr? The disk rotates in a plane of sketch about point O. 5.3 0; 5.4 ER
• WOA = 00, OA = a Velocity of the point B at given position of the mechanism is OB = 2004 4.3 ub=00a R= 12000 4.4 v =0. 4.2 WOA = 00, OA = a. Velocity of the point B at given position of the mechanism is: OB = 2004; 4.3 ub=00a; R= 12000; 4.4 v =0. 4.2
• A 2-m cantilever beam ABC of uniform cross section is fixed at point C and supported at point A. The beam is subjected to a uniformly distributed load of 24 kN/m over the whole span and a concentrate A 2-m cantilever beam ABC, of uniform cross section is fixed at point C and supported at point A. The beam is subjected to a uniformly distributed load of 24 kN/m over th...
• A gas turbine and some data are givin in the following figure The pressure ratio is 20 the mass rate is 3.5 kg s Take Cp 1.05 KJ kgk and y=1.4.Determine: A gas turbine and some data are givin in the following figure. The pressure ratio is 20, the mass rate is 3.5 kg/s Take Cp=1.05 KJ/kgk and y=1.4.Determine: a) Peressure a...
• What is relative acceleration of the point A that moves along the rim of the disk with a constant velocity ur The disk rotates in a plane of sketch about point What is relative acceleration of the point A, that moves along the rim of the disk with a constant velocity ur? The disk rotates in a plane of sketch about point O. 5. 5....
• Think about environment and care for the future METRO NEWS Wednesday 7 Feb 2018 THE country has stopped importing and producing HCHC based air-conditioners This is in line with the Montreal Think about environment and care for the future METRO NEWS Wednesday, 7 Feb 2018 THE country has stopped importing and producing HCHC based air-conditioners. This is in l...
• Discuss in detail the safety classification global environmental properties and physical properties of refrigerants Based on the above factors explain the selection criteria of a refrigerant for Discuss in detail the safety classification, global environmental properties and physical properties of refrigerants. Based on the above factors, explain the selection cr...
• A gas turbine and some data are givin in the following figure The pressure ratio is 20 the mass rate is 3.5 Kg s Take Cp=1 05 KJ KgK and v 1 4 Determine a Peressure after compressesor A gas turbine and some data are givin in the following figure. The pressure ratio is 20, the mass rate is 3.5 Kg/s Take Cp=1.05 KJ/KgK and v=1.4. Determine: a) Peressure ...
• Rewrite the following in terms of the unit Laplace transform. piecewise continuous function f t step function Then find its Rewrite the following in terms of the unit Laplace transform. piecewise continuous function f(t) step function. Then find its f(t) = 0 3 2 t² te "2, t> Answer; aşte" (eve 30).
• problem Solve the initial value 3y - 2y = hlt where ly o=1 oso, osts 6 ht = 3 5. t» 6 Answer; pst ostab - 2 + (5 et + 2) ezt , təb problem Solve the initial value [3y - 2y = hlt) where ly(o)=1 oso, osts 6 h(t) = 3 [ 5. t» 6 Answer; pst ostab - 2 (5 et 2) ezt , təb
• problem Solve the initial value y' + 3y + 2y = 8 +-3 0=2, 4'60=-2 Answe; y = Uz (t) elt-3) – Ug (t) & 2 (4-3) + 2 et y(t) = szet 4-5 zet t3. problem Solve the initial value y 3y 2y = 8 (-3), (0)=2, 460)=-2 Answer; y = Uz (t) elt-3) – Ug (t) & 2 (4-3) 2 et y(t) = szet 4-5 zet t3.
• Solve the initial value problem y t = cost + g 7 cos t-T dT y o=1 by means of Laplace transforms. Answer; 1 + t + 1 Solve the initial value problem y(t) = cost g(7), cos (t-T) dT y(o)=1 by means of Laplace transforms. Answer; 1 t 1
• Solve the initial value problem x'(t) – 2y(t) = 4t, y'74) +2y (+) – Lx (t) = -61-2, x 10) = 4, y (0)=-5 Answer; x (t) = 3 e 4t + ezt y (t) = -beut + 2+ 2t Solve the initial value problem x(t) – 2y(t) = 4t, y74) 2y () – Lx (t) = -61-2, x 10) = 4, y (0)=-5 Answer; x (t) = 3 e 4t ezt y (t) = -beut 2 2t
• A square plate of pure aluminum k = 231 W/ m-°C p = 1033 J/ kg-K p=2702 kg/m) has 0.5 m on a side and 20 mm thick which is initially at 327 °C and is suspended in a large room A square plate of pure aluminum (k = 231 W/(m-°C), p = 1033 J/(kg-K), p=2702 kg/m) has 0.5 m on a side and 20 mm thick which is initially at 327 °C and is suspended in a ...
• A gas mixture at 1500 K with the molar analysis 10% CO2 20% H2O 70% N2 enters a waste-heat boiler operating at steady state and exits the boiler at 600 K A separate stream of saturated liquid A gas mixture at 1500 K with the molar analysis 10% CO2, 20% H2O, 70% N2 enters a waste-heat boiler operating at steady state, and exits the boiler at 600 K. A separate s...
• Air at 20 °C with a free stream velocity of 8 m/s is used to cool electronic devices mounted on a printed circuit board. Each device of 5 mm x 5 mm dissipates 75 mW which is transferred by convection Air at 20 °C with a free stream velocity of 8 m/s is used to cool electronic devices mounted on a printed circuit board. Each device of 5 mm x 5 mm dissipates 75 mW which...
• A 20 mm-diameter of transmission line has an electrical resistance of 1x104 ohm/m and is transmitting a current of 1000 A. Determine i the surface temperature if the ambient air at 20°C and A 20 mm-diameter of transmission line has an electrical resistance of 1x104 ohm/m and is transmitting a current of 1000 A. Determine: (i) the surface temperature if the a...
• A cubical box is 1 m on a side The top surface is maintained at 110 °C and has an emissivity of 0.8 while the bottom surface is maintained at 45 °C and has an emissivity of 0.6. The four sides have A cubical box is 1 m on a side. The top surface is maintained at 110 °C and has an emissivity of 0.8 while the bottom surface is maintained at 45 °C and has an emissivity...
• MAKE UP ASSIGNEMNT ENR 302 1 Air at 20°C and 1.013 bars flows over a flat plate at 40m/s. This plate is 1mlongand is maintained at 60°C. Assuming unit depth calculate the heat transfer from the plat MAKE UP ASSIGNEMNT ENR 302 1. Air at 20°C and 1.013 bars flows over a flat plate at 40m/s. This plate is 1mlongand is maintained at 60°C. Assuming unit depth, calculate t...
• Sustainable Manufacturing This section contains long answe Answer all Questions 9 answer questions relating to sustainable manufacturing. Question No: 5 15 Marks The words sustainable and green are Sustainable Manufacturing This section contains long answe Answer all Questions 9 answer questions relating to sustainable manufacturing. Question No: 5 (15 Marks) The wo...
• Two co-axial parallel circular disks are separated by 0.3 m apart The radius of top disk, 0.45 m is maintained at 1000 K and has an emissivity of 0.9 while the radius of bottom Two co-axial parallel circular disks are separated by 0.3 m apart. The radius of top disk, 0.45 m is maintained at 1000 K and has an emissivity of 0.9 while the radius of...
• Two co-axial parallel circular disks are separated by 0.3 m apart The radius of top disk, 0.45 m is maintained at 1000 K and has an emissivity of 0.9 while the radius of bottom disk Two co-axial parallel circular disks are separated by 0.3 m apart. The radius of top disk, 0.45 m is maintained at 1000 K and has an emissivity of 0.9 while the radius of...
• A counter-flow shell-and-tube heat exchanger with 1-shell pass and 12-tube passes is used to heat water in the tubes with geothermal steam condensing at 140 °C on the shell side A counter-flow shell-and-tube heat exchanger with 1-shell pass and 12-tube passes is used to heat water in the tubes with geothermal steam condensing at 140 °C on the she...
• A counterflow double-pipe heat exchanger is used to heat 1.25 kg/s of water from 35 to 80 °C by cooling an oil cp= 2.0 kJ/kg-°C from 150 to 85 °C The overall heat transfer coefficient is A counterflow double-pipe heat exchanger is used to heat 1.25 kg/s of water from 35 to 80 °C by cooling an oil (cp= 2.0 kJ/kg-°C] from 150 to 85 °C. The overall heat tran...
• In-class worked example A marine propeller shaft of 200 mm diameter is subjected to a torque of T=126 kNm and a pure bending moment of M=157kNm Determine the state of the stress at positions In-class worked example: A marine propeller shaft of 200 mm diameter is subjected to a torque of T=126 kNm and a pure bending moment of M=157kNm. Determine the state of t...
• A hot water bath of 2 m W x 4 m L x 1.5 m H is maintained at a constant temperature of 40 °C and a constant water level in a room where the ambient air is at 1 atm 20 °C and 60% relative humid A hot water bath of 2 m (W) x 4 m (L) x 1.5 m (H) is maintained at a constant temperature of 40 °C and a constant water level in a room where the ambient air is at 1 atm....
• Consider steady two-dimensional heat transfer in a long solid bar with a mesh size of Ar = Ay = 1.0 cm Write the nodal equation for nodes 1 through 12 as shown in Figure Consider steady two-dimensional heat transfer in a long solid bar with a mesh size of Ar = Ay = 1.0 cm. Write the nodal equation for nodes 1 through 12 as shown in Figure...
• The cross section of a triangular shape long sold bar is shown in Figure Q9 a The surfaces A and B of the bar are maintained at 110 °C and 20 °C, respectively Using the finite difference method for The cross section of a triangular shape long sold bar is shown in Figure Q9(a). The surfaces A and B of the bar are maintained at 110 °C and 20 °C, respectively. Using th...
• Force Q = 80 N and the resultant R = 120 N Determine the magnitude of force P and the angle e. Answers Force Q = 80 N and the resultant R = 120 N (). Determine the magnitude of force P and the angle e. Answers: P=58.3 N, 0 = 35.44° 25°
• A pressurized cylindrical tank with fat closed ends is under an internal pressure p and also loaded by a torque and an axial tensile force F see Fig.05 The tank has inner diameter of d-250 mm and A pressurized cylindrical tank with fat closed ends is under an internal pressure p and also loaded by a torque and an axial tensile force F (see Fig.05). The tank has in...
• A vertical force P is applied at a distance x to the edge of the bracket as shown in Fig.04. (a) Determine the maximum and minimum normal stress in the bracket at section - when the load A vertical force P is applied at a distance x to the edge of the bracket as shown in Fig.04. (a) Determine the maximum and minimum normal stress in the bracket at section...
• The shown figure represents a seismic transducer used for Vibration measurement Its base 2 is attached to the vibrating object The seismic weight 3 of mass m is supported by the spring of stiffness The shown figure represents a seismic transducer used for Vibration measurement. Its base 2 is attached to the vibrating object. The seismic weight 3 of mass m is support...