Quiz: Consider a process consisting of five resources that are operated eight hours per day. 2 3 4 5 The process works on three different products, A, B, and C: Resources # of Workers for A [Min/Unit] Processing Time Processing Time Processing Time for B [Min/Unit] for C [Min/Unit] 1 2 5 5 5 2 2 3 5 3 1 15 0 0 4 1 0 3 3 5 2 6 Demand for the three different products is as follows: Product A, 40 units per day, Product B, 50 Units per day, and product C, 60 units per day. What is the bottleneck? What is the flow rate for each flow unit assuming that demand must be served in the mix described above (i.e., for every four units of A, there are five units of B and six units of C)?

Quiz: Consider a process consisting of five resources that are operated eight hours per day. 2 3 4 5 The process works on three different products, A, B, and C: Resources # of Workers for A [Min/Unit] Processing Time Processing Time Processing Time for B [Min/Unit] for C [Min/Unit] 1 2 5 5 5 2 2 3 5 3 1 15 0 0 4 1 0 3 3 5 2 6 Demand for the three different products is as follows: Product A, 40 units per day, Product B, 50 Units per day, and product C, 60 units per day. What is the bottleneck? What is the flow rate for each flow unit assuming that demand must be served in the mix described above (i.e., for every four units of A, there are five units of B and six units of C)?

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

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A process has seven elements composed of combination of worker and machine. Elements A, B, D, and F are worker-controlled while elements C and E are machine controlled. Element G is a worker-controlled irregular element performed every five cycles Machines are idle during elements A, D, and G. Two units are produced every cycle. Below are the observed time (in minutes) and performance rating of each element. Work Element Observed Time (in minutes) Performance Rating A 0.75 115% B 1.20 120% C 1.40 N.A. D 1.05 90% E 1.25 N.A. F 1.20 105% G 1.60 85% Worker's allowance is 20% a) Determine Normal Time . Answer in 4 decimal placesb) What is the standard time? Round up answer in 2 decimal places.c) If the worker's performance during actual production is 125% on all manual elements for seven hours worked on an eight-hour shift, how many units will be produced? Round up answer in integer value.d) Determine the worker's efficiency (in percentage). Answer in 2 decimal places
Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR 103 enter your response here Part 2 205 enter your response here Part 3 309 enter your response here Part 4 412 enter your response here Part 5 517 enter your response here ... Question content area right Part 1 The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Job Due Date Duration (days) 103 223 7 205 217 11 309 219 5 412 218 15 517 214 10 Assume that all jobs arrived on day 180; today's date is 200.
3 = noito This work cell will produce 617 units per day (8h x 60 m x 60 se) / 46.67 = 617 Takt time = 140/3 = 46.67 Copyright © 2017 Pearson Education, Ltd. Takt time design Creating plate printing cutting packaging Example: 100 Al-Nojoom Company for advertising has identified the following operations as necessary for the work cell for producing color posters. The customer expects delivery 1000 poster per day, and the work day 10 hours. 1. What is the takt time? Copyright © 2017 Pearson Education, Ltd. 2. How many employees are required? 3. If the number of employees assumed to be 9 employees. Find the quantity of products they able to produce. 4. If the work cell has 4 employees find the Total work time by hours needed to produce 600 units with the same operational time. operation Standard time 21.01 unitnos (min) 1.1 0.9 .75 1.25 1 9-33 sill nG a super 9-34
A company that operated 10 hours a day manufactures two products on three sequential processes. The following table summarizes the data for the problem: Which of the following is the most appropriate representation for variables x and y for the given situation? a.) x is the # of units of Product 1 to be procured; y is the # of units of Product 2 to be procured. b.) x is the # of units of Product 1 to be produced; y is the # of units of Product 2 to be produced. c.) x is the # of units of Product 1 to be stored; y is the # of units of Product 2 to be stored d.) x is the # of units of Product 1 to be delivered; y is the # of units of Product 2 to be delivered.
Consider the following batch-flow process consisting of three process stepsperformed by three machines. Process steps step 1 step 2 step 3 processing time 0.25min./unit 0.20 min./unit 0.15 min./unit setup time 30 min 20 min 45 min Work is processed in batches at each step. Before a batch is processed at a step, the machine atthat step must be set up. (During a setup, the machine is unable to process any product.) Assumethat there is a dedicated setup operator for each machine (i.e., there is always someone availableto perform a setup at each machine.)a. What is the capacity of step 1 if the batch size is 35 parts?b. For what batch sizes is step 1 (2, 3) the bottleneck?
[The following information applies to the questions displayed below.] The following are the car repair shop data: TETE Ticket No. Work Ticket No. Work Ticket No. Work 1 Lube & oil 11 Battery 21 Battery Tires 2 Lube & oil 12 Tires 22 3 Brakes 13 Brakes 23 Brakes 4 Lube & oil 14 Transmission 24 Transmission Lube & oil 15 Brakes 25 Brakes Tires 16 Battery 26 Lube & oil 7 Tires 17 Brakes 27 Lube & oil 8. Brakes 18 Tires 28 Lube & oil 9. Brakes 19 Tires 29 Tires 10 Lube & oil 20 Lube & oil 30 Lube & oil
Heizer and Render advises that when analyzing and designing processes to transform resources into goods, the followingquestions should be asked:- Is the process designed to achieve competitive advantage in terms of differentiation, response or low cost?- Does the process eliminate steps that do not add value?- Does the process maximize customer value as perceived by the customer?- Will the process win orders?A Time-Function Map is similar to a flow process chart, but with time added to the horizontal axis. With time-function mapping,notes indicate the activities and arrows indicate the flow direction, with time on the horizontal axis. 1. Choose a process within your organization and construct a Baseline Time-Function Map
Heizer and Render advises that when analyzing and designing processes to transform resources into goods, the followingquestions should be asked:- Is the process designed to achieve competitive advantage in terms of differentiation, response or low cost?- Does the process eliminate steps that do not add value?- Does the process maximize customer value as perceived by the customer?- Will the process win orders?A Time-Function Map is similar to a flow process chart, but with time added to the horizontal axis. With time-function mapping,notes indicate the activities and arrows indicate the flow direction, with time on the horizontal axis.
Please solve and explain each process
B9
n a manufacturing process, a molded part spends 7 hours in inventory before being placed in a deburring machine, where the part is processed for 2 minutes. After deburring, the part spends 4 hours in inventory waiting for its turn on the polishing machine. The part then spends 7 minutes in polishing before waiting 6 hours in line to be painted. The part goes through a painting process that takes 7 minutes, then spends 11 hours in inventory before being shipped to the customer. What is the percentage of value-added time for the part?
A machine shop manufactures two types of bolts. The bolts require time on each of the three groups of machines, but the time required on each group differs, as shown in the table below. Type I Type IIMachine 1 0.2 min 0.2 minMachine 2 0.6 min 0.2 minMachine 3 0.04 min. 0.08 min Production schedules are made up one day at a time. In a day, 300, 720, and 100 minutes are available, respectively, on these machines. Type I bolts sell for 15¢ and type II bolts for 20¢. (a) How many of each type of bolt should be manufactured per day to maximize revenue?(b) What is the maximum revenue?(c) Suppose the selling price of type I bolts began to increase. Beyond what amount would this price have to increase before a different number of each type of bolts should be produced to maximize revenue?