s A & B SOLVE CAREFULLY!! Please Write Clearly and Box the final Answer(s) and label them
Q: The parabolic velocity distribution in a channel flow is given by u(y) = 0.2(1 − y^2) m/s with y mea...
A: Given Data: Velocity distribution equation, u(y)=0.2(1-y2)
Q: A steel hoop. 10 mm thick and 80 mm wide, with inside diameter 1500.0 mm. 5. Is neated and shrunk on...
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Q: The above left drawing shows a countershaft with helical gear B, bevel gear D, and two supporting be...
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Q: Light diesel oil at 15 ℃ Relative density (specific gravity) is 0.80, Kinematic viscosity is 5×10^-5...
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Q: A steel tube with a thermal conductivity of 45 W/m.K carries a fluid at 200°C, with a convection hea...
A: Note: As per policy, we can solve the first three parts. Please resubmit the remaining parts.Thermal...
Q: A solid steel rod is 1.5 meters long and has a diameter of 20 mm. The steel rod is assume to be an e...
A: Given Diameter, d = 20 mm Shear stress = 145 MPa G = 77 GPa Length, L = 1.5...
Q: The velocity of a car is plotted as shown. Determine the total distance the car moves until it stops...
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Q: Sketch a T-s diagram for the above cycle indicating the location of the four components required.
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Q: 4. The timber member has a cross-sectional area of 1750 mm and its modulus of elasticity is 12 GPa. ...
A: Answer: The change in the total length of the member after the loads shown are applied is 2.5 mm.
Q: 1. Is it possible to operate a heat engine with only a high-temperature heat reservoir?? 2. Is it po...
A: Second law of thermodynamics is related to entropy change, it states that entropy change of universe...
Q: A confined volume of 27 moles an ideal gas (with y 1.42) goes through an expansion process so at the...
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Q: a simple experiment that demonstrates that work is directly proportional to the force applied.
A: We can take the example of the strring work to demonstrate the phenomenon.
Q: - Then ne is equal to
A: Given: The velocity components in the x and y directions of a 2D potentialflow are u and v respectiv...
Q: Problem 5: At its optimum point of operation, a given centrifugal pump with an impeller diameter of ...
A: Given that, Diameter of impeller, D1=550 mm,Flow rate of water, Q1=3.8 m3/sec,Head of pump, H1=20 m,...
Q: The steel shaft has four gears with corresponding number of powers as shown. The allowable shear str...
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Q: The rigid bar A BC is supported by a pin at A and a steel rod at B. Determine 8. largest vertical lo...
A: Given Data The stress in the steel rod is: σ=35 ksi The vertical moment of end C is: 0.12 in The le...
Q: 1. Find the magnitude and direction of the resultant force for the system of forces shown in the fig...
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Q: most essential parts of the lathe for it to function
A: Most essential parts of lathe.
Q: Three steel plates, each 16 mm thick and width of 300 mm are joined by two 20 mm rivets as shown. As...
A: The tensile stress in the rivet system is calculated by the formula given below as- σt=Pw-dt The Bea...
Q: A flat rectangular plate 1 m wide and 2 m iong is immersed in water. The shorter side parallel to wa...
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Q: Q6: The following force of mortality is given: Hy = 0.02 + - for 0sys 100. 100-y' 200-y Find 10918:
A: It is given that, μy=0.02+1100-y+2200-y for 0≤y≤100 10q10 needs to be calculated in this problem.
Q: A medium size power station is used to produce 30 MW net power for a refinery. The station uses stea...
A: GIVEN DATA- A CARNOT VAPOUR CYCLE WORKING BETWEEN 4bar AND 0.4bar we have to find heat added to boi...
Q: Draw the FBD of member ADB 20 lb 15 in. 15 in.- A C В D
A: FBD: Let RC be the reaction force at point C. Let XB and YB are the horizontal and vertical react...
Q: In the following conditions; determine its properties: a. P=2.0 MPa, x=90% b. T=2000C and x=80%
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Q: List energy transfer and conversion processes that will occur during the testing of the steam turbin...
A: Steam turbines offer enthalpy conversion of steam into useful work. There are several mechanisms for...
Q: Draw the shear and moment diagrams for the loaded beam. What are the values of the shear force and b...
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Q: Determine the nodal displacements the forces in each element and the reactions.Use the direct stiffn...
A: GivenE1=30×106PsiE2=15×106PsiA=5in2L2=L1=30in
Q: 4.27 A reaction turbine produces 5600 hp while operating at 260 rpm and a head of 60 ft. It is propo...
A: CAVITATION: Cavitation is the arrangement and imploding of pits or air pockets in a fluid generally ...
Q: A new 187 MW hydropower station is to be built at a site where the available head is estimated at 30...
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Q: A force 10N is applied to one end of a 10 inches diameter circular rod. Calculate the stress. 3.821 ...
A: Answer: The stress in the rod is 197.3525 N/m2.
Q: A flat rectangular plate 1 m wide and 2 m iong is immersed in water. The shorter side parallel to wa...
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Q: 1.39. Air flowing in a 4m x 6m rectangular duct has the following idealized velocity distribution: )...
A: Average velocity - it is defined as the change in displacement divided by change in time by the obje...
Q: A tube with 45 meters long, and a diameter of 1.8 meters and 2.3 meters, inlet and outlet respective...
A: D1=1.8m D2=2.3m V1=2100m/min
Q: Where are the areas on the lathe that should be given most caution? Why
A: A lathe can be described as a machine that rotates a workpiece about an axis to perform various oper...
Q: Three kg of steam at 121°C and 10% moisture undergoes a constant volume process until the pressure b...
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Q: Through load analysis, force and moment diagram are obtained, as shown below. Diagram below shows th...
A: The force that occurs between mating gears is normal to the surfaces in contact. The axial force Fa,...
Q: data apply: Inlet blade velocity is 20 m/s. Vu1=21 m/s; Vr1=10 m/s. At the exit, V2 is purely axial ...
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Q: maving a cross-sectional area of 300 mm and a length ly from one end. The rod supports a tensile loa...
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Q: *Prob. 1.4-6. A portion of the boom of a crane at a construc- tion site is shown in Fig. P1.4-6. The...
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Q: 1. Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), Cv...
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Q: State main disadvantages of using the Carnot cycle as the basis for a power station.
A: It is required to state main disadvantages of Carnot cycle
Q: 3. Determine the vertical and horizontal components of the reactions at pins B and C.
A: Drawing the reaction at A and D as shown below,
Q: 76. All surfaces of an infinitely long heating element, having a cross section in the shape of a cro...
A: Fins are the projection protruding from a hot surface into ambient air and they are meant for increa...
Q: IDENTIFY THE PARTS & FUNCTIONS OF LATHE MACHINE WITH PHOTOS.
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Q: rad). Determine the wire diameter and the number of active
A: Given: D=18 mm Fos=2 Mb=250 Nmm k=3 Nmm/rad σyt=0.6σut To determine: Diameter of the wire no of acti...
Q: K An eccentric Cam, 100 mmin diameter rotates with an eccentricityof lommas shown in the figure. The...
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Q: A rigid closed tank contains refrigerant 134a wnich is initially. with a temperaf lure of D'c and a ...
A: Time taken for the process to complete is 53.559 seconds.
Q: Air flowing isentropically through a converging nozzle discharges to the atmosphere at standard sea ...
A: Given: absolute pressure→P1=179 KPa temeprature→T1=39°C=312 K Aire speed →V1=177 msec We know that t...
Q: Find vertical and horizontal reaction solid mechanics solve ??
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Q: 2. A cyclic machine is used to transfer heat from a higher to a lower- temperature reservoir, as sho...
A: Given
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- Determine the rate of heat transfer per meter length from a 5-cm-OD pipe at 150C placed eccentrically within a larger cylinder of 85 magnesia wool as shown in the sketch. The outside diameter of the larger cylinder is 15 cm and the surface temperature is 50C.3.16 A large, 2.54-cm.-thick copper plate is placed between two air streams. The heat transfer coefficient on one side is and on the other side is . If the temperature of both streams is suddenly changed from 38°C to 93°C, determine how long it takes for the copper plate to reach a temperature of 82°C.The interior wall of a large, commercial walk-in type meat freezer is covered under normal operating conditions with a 2-cm thick layer of ice. One day, a power outage cuts electricity to the refrigeration system of the freezer. Estimate the time required to melt this layer of ice if it has a mass density of 700kg/m3 and a latent heat of fusion of 334 kJ/kg. Consider the air temperature inside the freezer to be 20C with a heat transfer coefficient of 2W/m2K for convection from the freezer surface to air, and clearly state the assumptions made in your calculations.
- Determine the rate of heat transfer per meter length to a light oil flowing through a 2.5-cm-ID, 60-cm-long copper tube at a velocity of 0.03 m/s. The oil enters the tube at 16C, and the tube is heated by steam condensing on its outer surface at atmospheric pressure with a heat transfer coefficient of 11.3 kW/m K. The properties of the oil at various temperatures are listed in the following table: Temperature, T(C) 15 30 40 65 100 (kg/m3) 912 912 896 880 864 c(kJ/kgK) 1.80 1.84 1.925 2.0 2.135 k(W/mK) 0.133 0.133 0.131 0.129 0.128 (kg/ms) 0.089 0.0414 0.023 0.00786 0.0033 Pr 1204 573 338 122 55The heat transfer rate from hot air by convection at 100C flowing over one side of a flat plate with dimensions 0.1m0.5m is determined to be 125 W when the surface of the plate is kept at 30C. What is the average convection heat transfer coefficient between the plate and the air?1.19 A cryogenic fluid is stored in a 0.3-m-diameter spherical container is still air. If the convection heat transfer coefficient between the outer surface of the container and the air is 6.8 , the temperature of the air is 27°C, and the temperature of the surface of the sphere is –183°C, determine the rate of heat transfer by convection.
- Using Table 1.4 as a guide, prepare a similar table showing the orders of magnitude of the thermal resistances of a unit area for convection between a surface and various fluids.3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the atmosphere from outer space. If its original temperature is 38°C, the effective average temperature of the atmosphere is 1093°C, and the effective heat transfer coefficient is , estimate the temperature of the shell after reentry, assuming the time of reentry is 10 min and the interior of the shell is evacuated.Show that the rate of heat conduction per unit length through a long, hollow cylinder of inner radius ri and outer radius ro, made of a material whose thermal conductivity varies linearly with temperature, is given by qkL=TiTo(rori)/kmA where Ti = temperature at the inner surface To = temperature at the outer surface A=2(rori)/ln(ro/ri)km=ko[1+k(Ti+To)/2]L=lenthofcyclinder
- 1.79 Consider the cooling of (a) a personal computer with a separate CPU and (b) a laptop computer. The reliable functioning of these machines depends on their effective cooling. Identify and briefly explain all modes of heat transfer involved in the cooling process.An electronic device that internally generates 600 mW of heat has a maximum permissible operating temperature of 70C. It is to be cooled in 25C air by attaching aluminum fins with a total surface area of 12cm2. The convection heat transfer coefficient between the fins and the air is 20W/m2K. Estimate the operating temperature when the fins are attached in such a way that (a) there is a contact resistance of approximately 50 K/W between the surface of the device and the fin array and (b) there is no contact resistance (in this case, the construction of the device is more expensive). Comment on the design options.1.39 On a cold winter day, the outside wall of a home is exposed to an air temperature of when the inside temperature of the room is at . As a result of this temperature gradient, there is heat loss through the wall to the outside. Consider the convective heat transfer coefficients for the air inside the room and at the outside wall surface to be, respectively, 12.0 and . If the composite room wall is modeled as a plane wall with a thermal resistance per unit area of , determine the temperature at the outer surface of the wall as well as the rate of heat flow through the wall per unit area. If the homeowner were to consider using a fiberglass insulation layer on the inside wall surface for reducing this heat loss by 50%, what is the required thickness of this layer and the outside wall temperature for this case?