do fast A model of a ship made to 1/20 scale, with wetted area 4 m²,is towed in fresh water at 1.2 m/s. The measured resistanceis 46.2 N. From tests on a thin plate of the same length asthe model, the skin resistance is found to be 5.22 v1.95 N/m².Assuming skin resistance of the full-scale ship to be 4.95 v1.9N/m². Find the total resistance of the ship in sea water atthe speed corresponding to the model speed of 1.2 m/s.Density of sea water 1025 kg/m³.(327.5 kN)

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Answered: A model of a ship made to 1/20 scale,…

Understanding Business

12th Edition

ISBN:9781259929434

Author:William Nickels

Publisher:William Nickels

Chapter1: Taking Risks And Making Profits Within The Dynamic Business Environment

Section: Chapter Questions

Problem 1CE

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SCENARIO B: A woodcutting operation has a target (nominal) value of 200 inches and consistently averages 200.1 inches with a standard deviation of .05 inches. The design engineers have established an upper specification limit of 200.25 and a lower specification limit of 199.75 inches.
A six-sigma green belt candidate finds P/T ratio of his gauge as 0.632. The gauge has no bias. He tried improving his gauge precision, but failed to do so. He plans to use averages of repeated measurements in his quality improvement project. How many repeated measurements does he need to make on a part to have a P/T ratio of 0.200 based on the measurement averages? Answer:
i will 10 upvotes plz do fast A liquid of specific gravity 0.88 and absolute viscosity 6.533 x 10^-4 Ns/m is flowing through a pipe of diameter 0.15 m at the rate of 60 litres per second. If the loss of head in 100 m length of pipe is 4.56 m. Determine whether the pipe is rough or smooth.
A quality engineer has a manufacturing specification (in cm) of 0.25 plus or minus 0.05 Historical data indicates that if the quality characteristic takes on values larger than 0.3 cm or smaller than 0.2 cm, the product fails and a cost of $90 is incurred. Determine the Taguchi Loss Function and estimate the loss for a dimension of 0.15 cm.
The measurement of 85 automotive cables gave an arithmetic mean of the inner diameters of 3.51 mm and a standard deviation of 0.02 mm.The value required by the manufacturer is 3.5 upper/lower tolerance +0.04/ -0.12It is requested : a. Calculate the capability coefficients Cp, Cpk and state whether or not the machine is capable of producing compliant parts, i.e. whether or not the data dispersion is well centred. If applicable, calculate the adjustment coefficient Cr.b. If scrap is obtained, state whether it is recoverable or non-recoverable and calculate the percentage of scrap.c. Plot the limits of the tolerance field and the distribution of the measured data (using mean and standard deviation).
In hydraulic fracture test, an induced fracture was created at 12.8 MPa. The fracture was reopened in three subsequent cycles. The reopening pressure at third cycle was found to be 6.4 MPa. If the tensile strength of rock is 6.3 MPa, and the pore water pressure is negligible. Determine the maximum and minimum principle stresses if the shut - in pressure was found to be 5.9 MPa
Quality control in a factory pulls 40 parts with paint, packaging, or electronic defects from anassembly line. Of these, 28 had a paint defect, 17 had a packaging defect, 13 had an electronicdefect, 6 had both paint and packaging defects, 7 had both packaging and electronics defects, and 10had both paint and electronic defects. Did any part have all three types of defect? If so, how many?
As the supervisor in charge of shipping and receiving, you need to determine the average outgoing quality in a plant where the known incoming lots from your assembly line have an average defective rate of 4.0%. Your plan is to sample 80 units of every 1,000 in a lo number of defects in a sample is not to exceed 3. Such a plan provides you with a probability of acceptance of each lot of 0.79 (79%). The average outgoing quality for the plant is =% (enter your response as a percentage rounded to two decimal places).
An extrusion molding produces pipe with an outer diameter specification of 15-14mm. A machine capability study records a mean of 14.56mm and a standard deviation of 0.85. Calculate Cp and Cpk. Is the machine capable if 1.11 is the minimum acceptable Cp /Cpk set by the company?
West Battery Corp. has recently been receiving complaints from retailers that its 9-volt batteries are not lasting as long as other name brands. James West, head of the TQM program at West's Austin plant, believes there is no problem because his batteries have had an average life of 60hours, about 10% longer than competitors' models. To raise the lifetime above this level would require a new level of technology not available to West. Nevertheless, he is concerned enough to set up hourly assembly line checks. Previously, after ensuring that the process was running properly, West took samples of 5 9-volt batteries for 25 test to establish the standards for control chart limits. Those 25 tests are shown in the following table: Sample Data Sample Data Hour Sample Taken 1 2 3 4…
Linda Boardman, Inc., an equipment manufacturer in Boston, has submitted a sample cutoff valve to improve your manufacturing process. Your process engineering department has conducted experiments and found that the valve has a mean (μ) of 12.00 and a standard deviation (a) of 0.04. Your desired performance is μ = 12.00 ±3 standard deviations, where σ = 0.020. For the given information, the process capability index (Cpk) = 0.875 (round your response to three decimal places).
Using a Taguchi Quality Loss Function (QLF) to Determine Tolerance The desired distancefor Flextronchip customers is 0.2 mm between two adjacent pins. Any deviation from this valuecauses interference. The process of handling complaints costs the firm at approximately $40.00 perchip. The engineers of the firm expect the average customer will be likely to complain when thedistance is off target by at least 0.0001 mm. At the factory, the adjustment can be made at a cost of$1.60, which includes the labor to make the adjustment and additional testing.Required1. What is the value of k, the cost coefficient, in the Taguchi quality loss function (QLF) based on theabove data?2. Based on a Taguchi quality loss function (QLF), what should the tolerance be (to 5 decimal places)before an adjustment is made at the factory?3. Based on your answer to requirement 2 above, what are the specification limits (upper and lower, to fivedecimal places) for the production of the product in question?

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