Engineering, 29.10.2019 05:31 jagdeep5533
Afuel gauge uses a capacitor to determine the height of the fuel in a tank. the effective dielectric constant keff changes from a value of 1 when the tank is empty to a value of k, the dielectric constant of the fuel, when the tank is full. the appropriate electronic circuitry can determine the effective dielectric constant of the combined air and fuel between the capacitor plates. each of the two rectangular plates has a width w and a length l (fig. p24.66). the height of the fuel between the plates is h. you can ignore any fringing effects. (a) derive an expression for keff as a function of h. (b) what is the effective dielectric constant for a tank 14 full, 12 full, and 34 full if the fuel is gasoline (k=1.95)? (c) repeat part (b) for methanol (k=33.0). (d) for which fuel is this fuel gauge more practical?
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Engineering, 04.07.2019 12:10
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Engineering, 04.07.2019 18:10
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
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Engineering, 04.07.2019 18:10
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k
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Engineering, 04.07.2019 18:10
Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
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Afuel gauge uses a capacitor to determine the height of the fuel in a tank. the effective dielectric...
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