Q1: Question 3 a) Using annotated diagrams, explain the workings of a Vapour Compression Refrigeration System. You should include details of the changes of the state of the refrigerant as it goes through the refrigeration cycle. [13 marks] (Word limit: 300 words) b) Refrigeration can also be achieved with a Vapour-Absorption System. Using diagrams where appropriate, explain the main principles of this system and the advantages and disadvantages of this compared to a Vapour Compression system. [12 marks] (Word limit: 250 words)See Answer
Q1: Question 1 ? You are required to upload your solutions and working out as either a Word, PDF or JPEG file. A South Australian Industrial Centre has four machines of five different types and operates 40 hours per week. Part-mix ratios, batch quantities, part routings, machines, servers, and production times are given in the table below for the five-part styles produced in the shop. Operation sequence for each part style is in the order of station number. Part styles are identified by letter and stations are identified by number. Determine: -) | CFS) ? F5 205 % (a) Which station is the bottleneck (b) Total production rate of all five parts (c) Production rates of each of the five-part styles 50 T (d) Utilization of each server at each station (e) Average utilization of the industrial center Part style (i) Part mix P Batch quantities Qb Stations (i) 1 2 3 4 F6 61 Y 4 + Servers Si 1 1 1 2 F7 A 0.2 20 TPA (hr) 0.30 0.23 0.14 0.40 # F8 B 0.3 20 TPB (hr) 0.20 0.35 0.20 0.28 F9 & 7 V8 A C 0.4 20 Tpc (hr) 0.18 0.22 0.45 D 0.5 -1- 20 Tpo (hr) 0.12 0.28 0.38 09 F10 ( 99 E 0.8 20 TPE (hr) 0.14 0.28 [10 Marks: 2 marks each] 0.48 100 --- ) 0 F11 0+ F12See Answer
Q1: The objectives of this experiment are to: • define a refrigeration cycle and quantitative measures of its performance. • evaluate the performance of a cycle based on experimental measurements.See Answer
Q1: Discussion Questions: 1. In the lower levels of the pyramid forecasting system, how would you prevent abdication of the responsibility for forecasting? 2. Can a grocery store capture true demand data? How might a warehouse capture demand data? 3. Some experts have argued it's more important to have low bias (mean error) than to have a low MAD. Why would they argue this way? Problems: 1. Demand for stereo headphones and MP3 players for joggers has caused Nina Industries to grow almost 50 percent over the past year. The number of joggers continues to expand, so Nina expects demand for headsets to also expand, because, as yet no safety laws have been passed to prevent joggers from wearing them. Demand for the stereo units for last year was as follows: Demand Month (Units) January 4,200 February 4,300 March 4,000 April 4,400 May 5,000 June 4,700 Demand July August September October Month (Units) 5,300 4,900 5,400 5,700 November 6,300 December 6,000 a. Using least squares regression analysis, what would you estimate demand to be for each month next year? Using a spreadsheet, follow the general format in Figure 3.3. Compare your results to those obtained by using the forecast spreadsheet function. b. To be reasonably confident of meeting demand, Nina decides to use three standard errors of estimate for safety. How many additional units should be held to meet this level of confidence?See Answer
Q1: Final Project Research Title: Investigating the Impact of Smartphone Usage on Sleep Quality and Academic Performance Among the 10 students given in the table below. Significance level (a=0.05). Case Study I: the Impact of Smartphone Usage on Sleep Quality. Case Study II: the Impact of Smartphone Usage on Academic Performance. Calculate the numerical measures (Mean, Standard Deviation, Median, Mode) for each case and perform the same calculations using Excel. Compute the correlation coefficients for each case, both numerically and by employing Excel. Utilize the quantitative methodology to investigate the relationships among the variables, ensuring to identify and include all the components of this research method. Is there a relationship between sleep quality and performance? Please provide the interpretation. Prepare a Research Proposal on the given topic, taking into account all the elements of the attached research proposal. Student S1 S2 S3 S4 S5 S6 S7 000 S8 S9 $10 Average Daily Smartphone Usage (In hours) 5 7 LD 4 8 3 6 4 7 5 Sleep Quality (On a scale of 1-10) 7 4 5 8 3 9 LD 6 7 st 4 5 Academic Performance (Score out of 100) 75 60 80 85 55 90 70 78 62 82See Answer
Q1: Essay topic choices: You have a choice of two (2) essay topics, from which you choose one (1) to respond to. The two options are outlined below:See Answer
Q1: A new restaurant would like to investigate if different age groups of customers prefer different types of food items. Each of their customers is given a food item - a burger or a sandwich. Each customer belongs to either adult or child age group. The customers were then surveyed on whether they enjoyed the food item. The table below gives the percentage of customers in each category.See Answer
Q1: Part 1 | Create Primitive Blocks 1. Create the 1-bit adder block defined in the 4-bit carry lookahead adder circuit. (see lecture handout) 2. Create a half adder circuit. 3. Create a full adder circuit. 4. Create the lookahead carry unit block defined in the 4-bit carry lookahead adder circuit. (see lecture handout) 5. Create a 4-input odd function circuit. (see lecture handout)See Answer
