Example 3.4measured by observing the temperature-time history of a copper ball of the same dimension. The temperatureof the copper ball (c = 0.4 kJ/kg K, p = 8850 kg/m³) was measured by two thermocouples, one located in thecentre, the other near the surface. Both of the thermocouples registered within the accuracy of the recordinginstruments the same temperature at a given instant. In one test the initial temperature of the ball was 65°Cand in 1.15 min the temperature decreased by 11°C. Calculate the heat transfer coefficient for this case.The heat transfer coefficients for the flow of air at 28°C over a 12.5 mm diameter sphere are

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Answered: Example 3.4 measured by observing the…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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1.4 Define nett P-F interval
Q2/A/ Use the Crank-Nicolson method to solve for the temperature distribution of a long thin rod C with a length of 10 cm and the following values: k = 0.49 cal/(s cm °C), Ax = 2 cm, and At = st 0.1 s. Initially the temperature of the rod is 0°C and the boundary conditions are fixed for all times C=0.2174 cal/g °C) at 7(0, t) = 100°C and T(10, t) = 50°C. Note that the rod is aluminum with and = 2.7 g/cm³. List the tridiagonal system of equations and determined the temperature up P to 0.1 s.
TRUE OR FALSE 4.) Bioyield is considered an elastic state and is located within the proportional limit 5.) The difference in the effect of temperature on viscosity of liquids and gases is related to the difference in their density. 6.) The parallel method of thermal conductivity calculation is based on the weighted harmonic mean of the components
For the following water liquid level system, 9mi(t) is the mass flow rate input deviation to the system and the restrictions can be considered linear resistances about the equilibrium: 9mi h2 Ro R1 a) Using basic fluids principles, develop the Dynamic Equations for the deviation of the two liquid level heights from their equilibrium height as a function of the input mass flow rate, Imi-
A two dimensional square plate (with 2m on each side) is subjected to the boundary conditions shown below. y T= 300 °C T= 70 °C 3 m T= 70°C 3 m T= 70 °C 1) Plot the temperature distribution obtained by the numerical solution a. using a uniform grid size of 0.5 m (Ax=Ay=0.5) b. using a uniform grid size of 0.1 m (Ax=Ay=0.1) 2) Plot temperatures (obtained by exact and two numerical solutions) as a function of a. x at y=1.0 m b. x at y=1.5 m c. y at x-1.0 m d. y at x-1.5 m
model which produces dynamic similarity. For water, density is 1000 kg/m³ and dynamic viscosity is 0.001 Ns/m². For oil, density is 750 kg/m³ and dynamic viscosity is 0.2 Ns/m². Question 2 1. The resistance to motion R for a sphere of diameter d moving at constant velocity u through a compressible fluid is dependent on the density p and the bulk modulus K. The resistance is primarily due to the compression of the fluid in front of the sphere. Show that the dimensionless relationship between these quantities is given by: Ne= (Ma)
For a slab with thickness 2 cm, the temperature is maintained at To and I at x = 0 and x = L. When I, -40 °C and I₁ = 60 °C, a heat flux sensor measures the magnitude of the heat flux as 40 W/m². Assume that the thermal conductivity k is a linear function of temperature. a) If, when T₁ -40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 80 W/m², what is the temperature dependence of k? b) If, when To=40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 100 W/m², what is the temperature dependence of k? c) If, when T₁ -40 °C and T₁ = 80 °C, the same heat flux sensor measures the magnitude of the heat flux as 60 W/m², what is the temperature dependence of k?
please send handwritten solution Q6 part ii
A K- type thermocouple is used to measure the temperature in a heating process. The length of the bare material is 100mm and thickness is 1.5mm. Find the time constant of the bare material. Турe of Thermo-Material couple K ( Q W/m- (kg/m³)| k) |(J/Kg- oc) J Iron- Constantan 46 8535 345 Kromel- Alumel 35 8738 380 T Copper- Constantan 160 8902 316 Cromel - Contantan 33 8825 336 IN Nicrocil- Nisil 34 8702 376 Pt(30%)Rhodium - B 19 15718 56 Pt(6%)Rhodium Platinum(13%)Rodium 55 16628 99 Platinum Platinum(10%)Rodium - Platinum IS 52.9 16745 99 Time constant of the bare material is, T=
A student attempts at home to reproduce the experiment by Joule performed in the mid-nineteenth century. In the student's experiment, a weight takes 20 minutes to fall a distance, z, under gravity whilst pulling on a wire that turns a paddle emersed in a fluid inside an uninsulated copper container (see illustration). The temperature of the fluid is monitored by an accurate thermometer emersed in the fluid. A first temperature reading is taken just before the mass begins to fall and a second temperature reading is taken just after the mass has fallen a distance, z and come to rest. Falling mass rotates paddle. Fluid Rotating paddle Copper How many of the following statements are correct: al The work performed by the falling mass goes solely to raising the internal enerav
Please answer question with as much detail as possible Please Use the “NCEES FE Reference Handbook 10.0.1” which can be downloaded for Free from https://ncees.org/ as your Reference for tables and formulas
Please try to solve complete in one hour

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