7th EditionAdel S. Sedra, Kenneth C. Smith2,025 explanations

10th EditionR.C. Hibbeler1,670 explanations

14th EditionR.C. Hibbeler1,447 explanations

6th EditionCharles Alexander, Matthew Sadiku2,102 explanations

ENGINEERINGEthanol gas $\left(\mathrm{C}_{2} \mathrm{H}_{6} \mathrm{O}\right)$ is burned with 110 percent theoretical air. During the combustion process, 90 percent of the carbon in the fuel is converted to $\mathrm{CO}_{2}$ and 10 percent is converted to CO. Determine (a) the theoretical kmols of $\mathrm{O}_{2}$ required for complete combustion of one kmol of ethanol, (b) the balanced combustion equation for the incomplete combustion process, and (c) the rate of heat transfer from the combustion process, in kW, when 3.5 kg/h of fuel are burned when the reactants and products are at $25^{\circ} \mathrm{C}$ with the water in the products remaining a gas.
$$
\begin{matrix}
\text{} & \text{}{\bar{h}_{f}^{\circ}, \mathrm{kJ} / \mathrm{kmol}} & \text{M, kg/kmol}\\
\text{}{\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}(g)} & \text{-235,310} & \text{46}\\
\text{}{\mathrm{CO}_{2}} & \text{-393,520 } & \text{44}\\
\text{CO} & \text{-110,530 } & \text{28}\\
\text{}{\mathrm{H}_{2} \mathrm{O}(g)} & \text{-241,820} & \text{18}\\
\text{}{\mathrm{H}_{2} \mathrm{O}(\mathrm{l})} & \text{-285,830} & \text{18}\\
\text{}{\mathrm{O}_{2}} & \text{} & \text{32}\\
\text{}{\mathrm{N}_{2}} & \text{} & \text{28}\\
\end{matrix}
$$ ENGINEERINGFor an emitter follower biased at $I_{C}=1 \mathrm{mA}$ and having $R_{\mathrm{sig}}=R_{L}=1 \mathrm{k} \Omega, r_{o}=100 \mathrm{k} \Omega, \beta=100,$ $C_{\mu}=2 \mathrm{pF}, C_{L}=0, r_{x}=0,$ and $f_{T}=400 \mathrm{MHz},$ find the low-frequency gain $A_{M}, f_{Z}, f_{P 1}, f_{P 2},$ and an estimate for $f_{H}.$