Question 6 A 3-phase star-connected source with a line voltage of 380V supplies a delta-connected balanced load with a phase impedance 20+10j 2. a.) Calculate the total real power delivered to the load. b.) Draw a phasor diagram for one phase only, showing all line- and phase-, voltages and currents. (5) (5)

Ch 11 Q10

QUESTION 2 In an effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 50 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $60. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past, what is the test statistic? (please round your answer to 2 decimal places)

QUESTION 1 BE8.1 E8.1 (LO 1) Eve Herschel is the owner of Herschel's Pizza. Herschel's is operated strictly on a carryout basis. Customers pick up their orders at a counter where a clerk exchanges the pizza for cash. While at the counter, the customer can see other employees making the pizzas and the large ovens in which the pizzas are baked. Identify the principles of internal control. Instructions Identify the six principles of internal control and give an example of each principle that you might observe when picking up your pizza. (Note: It may not be possible to observe all the principles.)

QUESTION 3 Which of the following refers to a short run phenomenon? economies of scale diseconomies of scale diminishing returns constant returns to scale

Customer value segmentation is the practice of matching service level to the profitability of the client. Question 10 options:   True   False

QUESTION THREEWarehousing is an important contributor to both productivity management and quality in a manufacturing industry. (a) Discuss symptoms of inefficient material handling in a warehouse.The following information is provided; Stock keeping unit (SKU)  Number of PalletsSKU 010                                         4            SKU 020                                         6 SKU 030                                        14 SKU 040                                         8 SKU 050                                         5 The pallets are being stored 3 high. Calculate: i. The number of pallet positions required to store the full consignment? ii. The percentage space utilisation in this warehouse.

Question 2 Mr. Ferdinand is a well known entrepreneur who sells fresh organic beef to persons in the local community. Customers love the quality of meet that Mr. Ferdinand sells so they tend to recommend his product to other persons. Recently, Mr. Ferdinand has been rumning out of beef to sell to his customers. One customer suggests to him that he must use past sales records to forecast demand for his beef so that he can meet his customers demand. Using a numerical example, demonstrate to Mr. Ferdinand how he can use a three- week and a four-week weighted moving average to forecast demand for his beef. I. II. Show how Mr. Ferdinand can test the accuracy of his forecast. III. Explain to Mr. Ferdinand two ways in which he can benefit from doing forecast for his beef. 日正

I choose

Question 40 A company buys medium grade carpet in 100-foot rolls. The average number of defects per roll is 1.8. Assuming that these data follow a Poisson distribution, what is the probability of finding exactly seven defects in a carpet roll chosen at random? 0.001 O 0.002 O 0.003 O 0.004