A reactor's wall 320mm thick, is made up of an inner layer of fire brick (k = 0.84W/m°C) covered with a layer of insulation (k = 0.16W/m°C). The reactor operates at a temperature of 1325°C at the atmospheric temperature of 25°C. i. Calculate the thickness of brick and insulation. ii. Heat loss per unit area presuming that the insulating material has a maximum temperature of 1200°C.
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75 children went to an amusement park, where they can ride on the merry go round, roller coaster, and the Ferris wheel. It is known that 20 of them taken all the three rides, and 55 of them taken have taken at least 2. Each ride costs 5 rupees and the total collection of the park was 700 rupees. Determine the number who did not try any of the rides. Solve by sets
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In the resistance strain gauge arrangement of Fig. 4.1 strain gauge resistance R1 = R2 = R3 = R4= 120 Ω Eb = 9 V. If the output voltage of the bridge is 20 mV, find the value of force applied to the strip. Thickness t of the strip = 1 mm. Width b of strip = 10 mm. Young's modulus E of strip material = 8 x 1010 N/m2. Length L = 50 mm. Strain at root of cantilever = 6PL/Ebt2. Assume output resistance as infinity. Gauge factor = 2.4.
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In the resistance strain gauge arrangement of Figure 4.72 strain gauge resistance R1=R2=R3=R4=120 ohm Eb=9V.If the output voltage of the bridge is 20mV,find the value of force applied to the strip.Thickness t of the strip=1 mm.Width b of strip=10mm.Young's modulus E of strip material=8 x 10^10 N/m^2.Length L=50 mm.Strain at root of cantilever=6 PL/Ebt^2.Assume output resistance as infinity.Gauge factor=2.4.
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