A wall for a tunnel consists of a 4 layers of different materials as shown in FigureQ1(b). The thickness and conductivity of the layers are as following; layer 1-2:10 cm [kA =0.69 W/m°C], layer 2-3: 8 cm [kB =0.70 W/m°C, kc =0.90 W/m°Cand kp =0.80 W/m°C], layer 3-4: 10 cm [kɛ =0.20 W/m°C], and layer 4-5: 10cm [kf =0.05 W/m°C and kg =0.10 W/m°C]. The areas of the wall are asfollowing; 3 m² for A material in layer 1-2, 1 m² for each materials in layer 2-3,3 m? for E material in layer 3-4 and 1.5 m² for each material in layer 4-5. Drawthe thermal circuit and calculate the heat flow through the wall for a 200°Ctemperature differential in the tunnel system.BED.12 345Figure Q1(b)

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Answered: A wall for a tunnel consists of a 4…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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II. A circular column is made of concrete [E. 4.2(10³)ksi] while being reinforced with six steel rods [Est = 29 (10³)ksi]. It is acted upon 4 in. - 30 kip by an axial force of 30 kip as shown in the figure to the right. Each rod has a diameter of 0.85 in. 3 ft Solve for the following: a) Force in each steel rod, Pst b) Force in the concrete, P. c) Stress in each steel rod, Ost = kip kip %3D ksi d) Stress in the concrete, oc = ksi
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01(1) 18 N-m-s/rad T(t) 02(1) 1 N-m-s/rad kg-m? 3 kg-m2 3 N-m/rad 9 N-m/rad (a) Figure P2.16a OJohn Wiley & Sons, Inc. All rights reserved. The transfer function where the output Theta, is s? +5s +1 0,(s) а. Н(s)3D T(s) s' +30s +80s² +s+15 4 s' +5s +1 0,(s) b. H(s)= T(s) 25s* + 30s' +80s? + s +15 4 5s? +9s+9 0,(s) c. H(s)= T(s) 15s* +30s +95s² + s +27 5s +9s +9 0,(s) T(s) 15s +32s' +95s² +99s+27 d. H(s)= 4 Select one: O a.c O b. a O .b O d.d 立

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