Questions asked
Which of the following conditions is characterised by the narrowing of the airways due to muscle spasms, swelling, and mucus production? Question 8Answer a. Emphysema b. Asthma c. Chronic bronchitis d. Bronchiectasis
What issues in this incident increase the psychological risk of the responders as they prepare to handle the human remains? Identify at least three issues and explain why they might increase the psychological risk for the crew.
Why do you think Dell splits its shares? What is the effect of stock splits on shareholders’ equity and profitability ratios? Current assets Current liabilities Pretax income Interest expense $20,000,000 $8,000,000 $1,700,000 $700,000
7) How much ice is required to decrease the temperature of 775 mL of water from 60°C to 45°C? The density of water is 1.0 g/mL, the △ H°fus = 6.02 kJ/g, and the Cs,liq = 4.18 J/g.°C
at consequence would arise if a peptide bond no longer maintained partial double-bond character? ? Rotation about the peptide bond would be prevented. The peptide bond would no longer have a planar geometry. The bond length would decrease. The peptide bond would no longer remain uncharged.
||w|| = √(16^2 + (-12)^2) = √(256 + 144) = √
A thin lens with a diameter of 20 mm have an effective focal length of $f = +50$ mm. 20 mm behind (right) from the lens is one aperture of the size 10 mm. Find the positions and the diameters of the entrance and exit pupils, if the object plan is far from the lens. Both methods (calculation and graphical) are allowed.
Ünite ??letme Gücü Nominal No Alt S?n?r? Güç Giri?-Ç?k?? E?risi 1 57 MW 150 MW $F_1(P_1) = [8,5xP_1^2 + 1350xP_1 +7215]x10^3 kcal/h$ 2 40 MW 150 MW $F_2(P_2) = [5,7xP_2^2 + 1175xP_2 +7530]x10^3 kcal/h$
In both circuits Fig. a & b. $R_1 = 39~k$, $R_2 = 4.7~k$, $R_E = 1.2~k$ and $R_C = 2.2~k$ $V_{CC} = 18$ Voltage, Beta = 120, $r_o = infinity$. In each circuit determine: 1. $I_{CQ}$, and $V_{CEQ}$- 2. Compare your obtained results for each figure.
QUESTION 1: (45 marks) Consider the four-stream problem in which hot streams are cooled and cold streams are heated as follows: Stream Type of Number Stream Heat Capacity Rate C (kW/°C) Source Temp. Ts (°C) Target Temp. T: (°C) 1 Hot 3 180 100 2 Hot 5 120 80 3 Cold 3 70 140 4 Cold 2 80 160 The minimum temperature approach $\Delta T_{min} = 20^\circ C$. a) Construct the temperature interval diagram; (5 marks) b) Construct the problem table; (6 marks) c) Construct the energy cascade diagram; (8 marks) d) Determine the pinch temperatures for hot and cold streams; (2 mark) e) Determine the Maximum Energy Recovery (MER) targets for hot and cold utilities. (4 marks) f) Create the Heat Exchanger Network (HEN) by matching the streams and find the minimum number of heat exchangers & utilities required above and below the pinch point. (20 marks) $\Delta H_i = \Delta T_i \left[ \sum C_i - C_h \right]$ Above the Pinch, $C_h \le C_c$ and $N_{HX,min} = N_s + N_u - 1$ Below the Pinch, $C_h \ge C_c$