Answer:
The correct option is;
(a) High power density
Explanation:
The power density of a material is the amount of power per unit volume of the material. Power density, in the context of transformers, fuel cells, batteries, motors, and power supply units, is measured with respect to the volume, and the units is given as W/m³
A system such as a capacitor with an high power density has the capacity to put out large energy amount from a small volume. A capacitor with a high power density, can produce the same power output as a car battery and is said to have a high power density.
Answer:
11.541 mol/min
Explanation:
temperature = 35°C
Total pressure = 1.5 * 1.013 * 10^5 = 151.95 kPa
note : partial pressure of water in mixture = saturation pressure of water at T = 35°c )
from steam table it is = 5.6291 Kpa
calculate the mole fraction of H
( YH
)
= 5.6291 / 151.95
= 0.03704
calculate the mole fraction of air ( Yair )
= 1 - mole fraction of water
= 1 - 0.03704 = 0.9629
Now to determine the molar flow rate of water vapor in the stream
lets assume N = Total molar flow rate
NH
= molar flow rate of water
Nair = molar flow rate of air = 300 moles /min
note : Yair * n = Nair
therefore n = 300 / 0.9629 = 311.541 moles /min
Molar flowrate of water
= n - Nair
= 311.541 - 300 = 11.541 mol/min
Answer:
The detailed answer to the question is explained in the attached file.
Explanation:
Answer:
The composition of Composite of Volume basis is 2.154% Copper and 97.83% Rubber.
Explanation:
Let us assume that the total mass of composite is 100 lbm So as per the given conditions
- 15 lbm is copper and 85 lbm is rubber.
- Density of rubber is 70 lbm/ft3
- Specific gravity of Copper is 9
So As per the formula of specific gravity
![S_{cu}=\frac{\rho_{cu}}{\rho_w}](https://tex.z-dn.net/?f=S_%7Bcu%7D%3D%5Cfrac%7B%5Crho_%7Bcu%7D%7D%7B%5Crho_w%7D)
here density of water is 62.4 lbm/ft3
Solving for Density of Copper gives
![S_{cu}=\frac{\rho_{cu}}{\rho_w}\\9=\frac{\rho_{cu}}{62.4}\\\rho_{cu}=9 \times 62.4\\\rho_{cu}=561.5 lbm/ft3](https://tex.z-dn.net/?f=S_%7Bcu%7D%3D%5Cfrac%7B%5Crho_%7Bcu%7D%7D%7B%5Crho_w%7D%5C%5C9%3D%5Cfrac%7B%5Crho_%7Bcu%7D%7D%7B62.4%7D%5C%5C%5Crho_%7Bcu%7D%3D9%20%5Ctimes%2062.4%5C%5C%5Crho_%7Bcu%7D%3D561.5%20lbm%2Fft3)
For composition on volume basis, volume of individual components and composite are calculated as
![V_{cu}=\frac{m_{cu}}{\rho_{cu}}\\V_{cu}=\frac{15}{561.5}\\V_{cu}=0.0267 ft^3\\\\V_{r}=\frac{m_{r}}{\rho_{r}}\\V_{r}=\frac{85}{70}\\V_{r}=1.214 ft^3\\\\V_{c}=V_{r}+V_{cu}\\V_{c}=1.214+0.0267 \\V_{c}=1.2409 ft^3](https://tex.z-dn.net/?f=V_%7Bcu%7D%3D%5Cfrac%7Bm_%7Bcu%7D%7D%7B%5Crho_%7Bcu%7D%7D%5C%5CV_%7Bcu%7D%3D%5Cfrac%7B15%7D%7B561.5%7D%5C%5CV_%7Bcu%7D%3D0.0267%20ft%5E3%5C%5C%5C%5CV_%7Br%7D%3D%5Cfrac%7Bm_%7Br%7D%7D%7B%5Crho_%7Br%7D%7D%5C%5CV_%7Br%7D%3D%5Cfrac%7B85%7D%7B70%7D%5C%5CV_%7Br%7D%3D1.214%20ft%5E3%5C%5C%5C%5CV_%7Bc%7D%3DV_%7Br%7D%2BV_%7Bcu%7D%5C%5CV_%7Bc%7D%3D1.214%2B0.0267%20%5C%5CV_%7Bc%7D%3D1.2409%20ft%5E3)
The composition is given as
![c_{cu}=\frac{V_{cu}}{V_{c}}\\c_{cu}=\frac{0.0267}{1.2409} \times 100 \%\\c_{cu}=2.154 \%\\\\c_{r}=\frac{V_{r}}{V_{c}}\\c_{r}=\frac{1.214}{1.2409} \times 100 \%\\c_{r}=97.83 \%](https://tex.z-dn.net/?f=c_%7Bcu%7D%3D%5Cfrac%7BV_%7Bcu%7D%7D%7BV_%7Bc%7D%7D%5C%5Cc_%7Bcu%7D%3D%5Cfrac%7B0.0267%7D%7B1.2409%7D%20%5Ctimes%20100%20%5C%25%5C%5Cc_%7Bcu%7D%3D2.154%20%5C%25%5C%5C%5C%5Cc_%7Br%7D%3D%5Cfrac%7BV_%7Br%7D%7D%7BV_%7Bc%7D%7D%5C%5Cc_%7Br%7D%3D%5Cfrac%7B1.214%7D%7B1.2409%7D%20%5Ctimes%20100%20%5C%25%5C%5Cc_%7Br%7D%3D97.83%20%5C%25)
So the composition of Composite of Volume basis is 2.154% Copper and 97.83% Rubber.