Lab #12 Report

2. The results from a settling column test performed on a municipal sewage from a certain town were as presented below. The experiments were conducted on a sample of sewage which is sieved through a 1.2 mm mesh to remove gross solids that would block valves. 501 of the sample weighed 1.352 gm. After drying. Sampling Time (min.) 0 60 180 360 Experimental results for amount of SS remaining in the sample (mg/l) Sampling depth (cm) 100 230 150 118 90 200 230 150 143 115 300 230 159 147 134 400 230 157 152 145 The sewage treatment work incorporates two primary settlement tanks each of a diameter of 25 m. The sewage flow to the tanks is 0.3 m³/s. Find the percentage expected SS removal at the works.

7. Repeat the experiment using a second and third rod of different material. Data Table: T; °C Lo m Aluminum 0.30 Material AL m T; °C AT °C 5.44 x 10-4 24.6 100.2 0.29 4.21 x 10-4 23.5 99.9 Brass 0.30 3.83 х 104 25.0 100 Copper Data Analysis Table Experimental a Accepted a /°C 24 x 10-6 Material Error % Aluminum 19 х 106 Brass 17x 10-6 Сopper

Q.49 A person operates a machine that makes capacitors. He has been advised to keep the track of the percentage defectives at his work center. He knows that this type of process, they expect about 4% defectives plus or minus some chance variation. He wishes to initially construct a control chart for defectives. He has prepared ten daily samples of hundred capacitors each. Sample No. 1 2 3456 789 10 % defectives 4 3 36 195 12 4 3 ) Construct the relevent control chart. What are upper and lower control limits?

QUESTION 7 The heat evolved in calories per gram of a cement mixture is approximately normally distributed. The mean is thought to be 100, and the standard deviation is 2. You wish to test Ho: μ =100 versus H₁: μ #100 with a sample of n=9 specimens. If the acceptance region is defined as 98.5 ≤x≤ 101.5, f Find ß for the case in which the true mean heat evolved is 103 O a.0.5 b. 0.0244 O c.0.9878 O d. 0.0122

The heat transfer conducted through material is calculated from the equation: Q = KX AXTD/L Where K: Conductivity of material A: Area of heat transfer TD: Temperature difference across material L: Thickness of material A student measures the area, thickness and temperature difference and assumes that the error in conductivity is negligible. The student also estimates the uncertainty range for each variable. In estimating the maximum possible value of Q, the student should use the following formula: A B Q max= K x A max x TD max / L max Q max= K x A max x TD max / L nom Q max= Q nominal + dQ/dLmin Q max= K x A max x TD max / L min

Macro farms Ltd can purchase two types of fertilizer which contain the following percentage                                        Nitrate        Phosphate       Potash                 Type X              18                    5                      2                  Type Y               3                   2                       5 For certain type of crop, the following minimum quantities (kg) are required                                      Nitrate         Phosphate      Potash                                         100                 50                  40               Type X cost GHS10 per kg and type Y cost GHS5 per kg. The company currently buys 1,000 kg of each type and wishes to minimize it expenditure on fertilizers.Required 1. What is the minimum expenditure that can be incurred on fertilizer?  2. Find the savings the company can make by switching from it current policy to your recommendation.

I hope you can help me thank you

3. The following table shows the daily temperature measurements and numberof defects for the Temperature Day Number of Defects 1 24.2 25 2 22.7 31 3 30.5 36 4 28.6 33 5 25.5 19 32.0 24 7 28.6 27 8 26.5 25 9. 25.3 16 10 26.0 14 11 24.4 22 12 24.8 23 13 20.6 20 14 25.1 25 15-day observation. 15 21.4 25 Compute for the following: a. Mean b. Median C. Variance d. Standard deviation е. Mean deviation

The number of pups in wolf dens of the southwestern United States is recorded below for wolf dens: 5875343958 56 5 6479436 10 89 127 12 10 969 Compute a 90% confidence interval for the population mean of wolf pups per den in the southwestern United States ( 2decimal places) E = lower limit = upper limit =

Please help Matlab, as well needs to be on excel data sheet.  P14.19 You perform experiments and determine the following values of heat capacity cat various temperatures T for a gas:I) For c, determine (a) the mean, (b) median, (c) mode, (d) range, (e) standarddeviation, (f) variance, and (g) coefficient of variation.II) Using linregr given function, fit the data using a straight line (determine a1,a0, r2). Plot the data and the regression curve.III) Using polyfit command, fit the data using a quadratic curve (determine a2, a1, a0).Plot the data and the regression curve.IV) Using linregr given function, fit the data using exponential model (determineα, β, r2). Plot the data and the regression curve in the T-c space (not the T-log(c)space) T -50      -30    0      60       90   110 C 1250 1280 1350 1480  1580  1700

Go Tools Window Help A Screen Shot 2021-10-30 at 6.12.39 AM Edited Q Sea A- Exercise Consider the following readings in a reactor: table of data representing temperature Thermocouple 1 Thermocouple 2 Thermocouple 3 84.3 86.4 90.0 85.2 87.1 83.5 89.5 88.6 88.9 88.9 86.7 87.6 88.3 85.3 80.3 84.8 90.4 82.4 85.0 85.3 85.3 85 2 82.3 84.7 83.6 89.3 83.4 85.4 89.5 88.9 89.1 86.3 85.3 89.0 87.3 87.2 89.5 89.4 89.8 (a) The maximum temperature measured by each thermocouple. (b) The minimum temperature measured by each thermocouple. oct 30 Ctv

mecha

On the drawing attached, before any geometric controls are applied, what is the coaxility tolerance is implied between the diamters?

Please solve this question

7. A load cell is calibrated in an environment at a temperature of 21°C and has the following deflection/load characteristic: Load (kg) Deflection (mm) 50 100 150 200 0.0 1.0 2.0 3.0 4.0 When used in an environment at 35°C, its characteristic changes to the following: Load (kg) Deflection (mm) 50 100 150 200 0.2 1.3 2.4 3.5 4.6 (a) Determine the sensitivity at 21 and 35°C. (b) Calculate the total zero drift and sensitivity drift at 35°C. (c) Hence determine the zero drift and sensitivity drift coefficients (in units of um/°C and (um per kg)/(°C).

What is the linearity (r-) value of the following concentration and absorbance values: SAMPLE CONCENTRATION ABSORBANCE 1 0.178 0.2127 0.274 0.2715 0.473 0.3892 0.574 0.4568 0.673 0.5327 16 0.864 0.6283 0.9876 0.9976 0.9786 0.9562

What is Qh and Qc based on the table

Please show work for practice problem 12

Student A B D H Number 201780130 2 1 7 8 1 3 Evaluate the following variables and use them as given in the following problems. 200 if I is even, 250 if I is odd (D + G)*10 (H + I/2, if in case the result is zero, use 3 (A +C + E)*2 (P + M)*20 H + 5 M Q %3D 50(E + G + 1) II II || || || |||| ZNPORX

A chemical engineer desiring to study the evaporation rate of water from brine evaporation beds obtained data on the number of inches of evaporation in each of 55 July days spread over 4 years. The data are given in the following stem and leaf plot, which shows that the smallest data value was 0.02 inch, and the largest 0.56 inch. Stem       Leaf 0.0           2, 6 0.1           1, 4 0.2           1, 1, 1, 3, 3, 4, 5, 5, 5, 6, 9 0.3           0, 0, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 8, 9 0.4 0,       1, 2, 2, 2, 3, 4, 4, 4, 5, 5, 5, 7, 8, 8, 8, 9, 9 0.5           2, 5, 6 Find the: a) sample mean; b) sample median; c) sample standard deviation of these data. d) Do the data appear to be approximately normal? e) What percentage of data values are within 1 standard deviation of the mean?

3. Examine your data in Data Table 2 and in Data Table 3. For the data with the smallest percentage difference, compare the total energy at each point. Calculate the sum U₁+Ug at x₁ as ½kx-mgx₁. Calculate that sum at x₂ as ½kx²-mgx₂. Do you expect them to agree reasonably well? Explain why they should or should not be the same. 4. Consider the same data as used in Question 3. Calculate the value of x halfway between x₁ and x₂. Calculate U₁+Ug=½kx² − mgx_for_that point. Do you expect them to agree with the energy calculated in Question 3? If they agree reasonably well, explain why they do. If they do not agree, explain why they do not agree.

Mech 374

How did they get the Fab and Fbc?