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Niebels Methods, Standards and Work Design 13th edition Andris Freivalds, Benjamin Niebel - Solutions
How are simultaneous activities handled in BasicMOST?
What are some of the advantages in using a predetermined time system as opposed to stopwatch time study?
What are the advantages of using predetermined times?
Which other two terms are used frequently to identify predetermined times?
Who pioneered the MTM system?
What is the time value of one TMU?
Would it be easy or difficult to perform a GB get with the left hand while simultaneously performing a PC place with the right hand? Explain.
For which reasons was MTM-2 developed? Where does MTM-2 have special application?
Is there consistency between MTM-1 and MTM-2 in the handling of simultaneous motions?
If MTM-3 were used to study an operation of approximately three minutes' duration, what could you say about the accuracy of the standard?
Determine the time for the dynamic component of M20 B20.
Develop a BasicMOST analysis of the cable-clamp assembly shown in Figure 4-17.
The Purdue Pegboard Task is a standard test for motor skills. It consists of a board with a series of holes and pegs, stored in depressions at the top of the board (shown below). One version of a standard task is done with both hands simultaneously as follows:1) Both right and left hands pick up
The old-fashioned way of voting, by paper ballot, involves a voter picking up a pencil, placing an X in the appropriate box for the candidate he/she chooses, returning the pencil to the table, and then placing the ballot into the ballot box. Assume all items (ballot, pencil, ballot box) are within
A worker tests piston rings. He picks up an untested ring from the left-side stand with his left hand, tries to pass it through the left-hand slot (a no-go slot, meaning a good ring should not go through). He then pulls the ring back and tries the right-hand slot (a go slot, meaning a good ring
A 30-pound bucket of sand having a coefficient of friction of 0.40 is pushed 15 inches away from the operator with both hands. What would be the normal time for the move?
A 3/4-inch diameter coin is placed within a 1-inch diameter circle. What would be the normal time for the position element?
Calculate the equivalent in TMUs of 0.0075 hours per piece, of 0.248 minutes per piece, of 0.0622 hours per hundred, of 0.421 seconds per piece, of 10 pieces per minute.
The MTM-2 (see Figure 13-20) describes a simple operation in which each hand gets a part, the right hand regrasps it an puts it into a fixture. Pressure is applied to seat it. Next a pin is grasped, regrasped and inserted into the assembly. A hand wheel is cranked six revolutions under resistance
Develop a BasicMOST analysis of the proper sequence of activities in Figure 13-20.
The Purdue Pegboard Task is a standard test for motor skills. It consists of a board with a series of holes and three types of pieces: pegs, washers and standoffs, stored in a depression at the top of the board. The assembly, with the board rotated perpendicular to the operator's torso, is as
Develop a BasicMOST analysis for the first complete assembly in Problem 7.
Develop an MTM-2 analysis of the cable-clamp assembly shown in Figure 4-17.
Where was work sampling first used?
How can the validity of work sampling be sold to the employee not familiar with probability and statistical procedure?
What are the pros and cons for using work sampling to establish standards of performance?
What are advantages of work sampling over stopwatch time study?
In which areas does work sampling have application?
How is it possible to determine the time of day to make the various observations so that biased results do not occur?
What considerations should be kept in mind when taking work sampling studies?
The discuss the statistical basis for the tradeoff between the number of observations collected and the accuracy of work sampling.
What are the principal advantages of using a random reminder in connection with a self observation study?
Over how long a period is it desirable to collect observations?
Discuss the tradeoffs of observing simultaneously ten clerks in a large bank.
The analyst in the Dorben Reference Library decides to use the work sampling technique to establish standards. Twenty employees are involved. The operations include cataloging, charging books out, returning books to their proper location, cleaning books, record keeping, packing books for shipment,
Dorben Co. provides a 10% allowance for its operators. A work sampling study of one operator over an 8-hr shift yields the following data. Average rated performance is 110%.a. What is the observed time (in minutes) for loading?b. What is the normal time for unloading?c. What is the overall standard
A work sampling analyst notices that out of 50 observations, a worker is taking a break 2 times, chatting to a co-worker 2 times, and is absent from the workstation once. The analyst is 95% confident that the worker is actually working from _________% to __________% of the time. If the statement is
The following observations were obtained randomly over an 8-hour time period on the Zip operator, during which time he assembled 20 Zip drives.a) How many minutes of a typical 8-hour work day is the Zip operator working?b) What is the average performance of the Zip operator?c) What is the normal
The work measurement analyst in the Dorben Company is planning to establish standards on indirect labor by using the work sampling technique. This study will provide the following information:T = Total operator time represented by the studyN = Total number of observations involved in the studyn =
The analyst in the Dorben Company wishes to measure the percentage of downtime in the drop hammer section of the forge shop. The superintendent estimated the downtime to be about 30 percent. The desired results, using a work sampling study, are to be within ±5 percent of p with a level of
The Dorben Company is using the work sampling technique to establish standards in its typing pool section. This pool has varied responsibilities, including typing from tape recordings, filing, Kardex posting, and copying. The pool has six typists who work a 40 hour week. Seventeen hundred random
How many observations should be recorded in determining the allowance for personal delays in a forge shop if it is expected that a 5 percent personal allowance will suffice, and if this value is to remain between 4 and 6 percent 95 percent of the time?
To get ±5 percent precision on work that is estimated to take 80 percent of the workers' time, how many random observations are required at the 95 percent confidence level?
If the average handling activity during a 10-day study is 82 percent, and the number of daily observations is 48, what is the confidence interval for each day's percentage activity?
The following data was collected by an intern working at the Mole Hill Ski Resort regarding the efficiency of the V-8 Ford engine that was used to power their rope tow for the bunny slope. Management would like to know how many hours of service they can expect to achieve out of their obviously
Data from an 8-hour work sampling study are shown below.a) What % of the time is the machine running?b) What % of the time is the machine broken?c) What is the limit of accuracy of this study?d) What is 95% confidence interval of the machine running?e) Your manager says that the range in part d) is
Differentiate between indirect labor and expense labor.
Why are standard data especially applicable to indirect labor operations?
Summarize the advantages of standards established on indirect work.
Explain the application of slotting for indirect or expense labor.
Why will a universal standards system involving as few as 20 benchmark standards work in a large maintenance department where thousands of different jobs are performed each year?
Explain 'queuing theory.'
Which four divisions constitute indirect and expense work?
Are standards established on the 'unnecessary delays' portion of indirect and expense work? Why or why not?
Why has there been a marked increase in indirect workers?
Why do more unavoidable delays occur in maintenance operations than on production work?
What is meant by crew balance? By interference time?
Explain how time standards could be established on janitorial operations.
Which office operations can be readily time studied?
Work measurement procedures establish an average time of 6.24 minutes per piece on the inspection of a complex forging. The standard deviation of the inspection time is 0.71 minutes. Usually, 60 forgings are delivered to the inspection station on the line every eight-hour turn. One operator
In the tool and die room of the Dorben Company, the work measurement analyst wishes to determine a standard for the jig boring of holes on a variety of molds. The standard will be used to estimate mold costs only, and it will be based on operator wait time for molds coming from a surface grinding
What would be the expected waiting time per shipment if a stopwatch time study established that the normal time to prepare a shipment was 15.6 minutes? Twenty-one shipments are made every shift (eight hours). The standard deviation of the service time has been estimated as 1.75 minutes. It is
Using Monte Carlo methods, what would be the expected downtime hours because of the lack of an operator for servicing if four operators were assigned to the work situation described in Example 15-3 in the text?
The arrivals at the company cafeteria are Poisson, with an average time between arrivals of 1.75 minutes during the lunch period. The average time for a customer to obtain lunch is 2.81 minutes, and this service time is distributed exponentially. What is the probability that a person arriving at
Compare and contrast the different ways of determining a standard time.
An audit revealed that a standard as originally established was 20 percent loose, explain the methodology to be followed to rectify the rate.
What is the relationship between the accuracy of time standards and production control? Does the law of diminishing returns apply?
Explain the different costs comprising factory cost. Which ones would a methods analyst have most control over?
Explain the benefits of increasing production in relation to manufacturing cost.
When is it no longer necessary to follow up the installed method?
How can valid time standards help develop an ideal plant layout?
Explain the relationship between time standards and plant capacity.
In what way are time standards used for effective production control?
How do time standards allow the accurate determination of labor costs?
How does developing time standards help maintain the quality of products?
In what way is customer service improved through valid time standards?
What is the relationship between labor cost and efficiency?
Explain how inventory and storage areas can be predicted accurately.
In the XYZ Company, management is considering going from two 8-hour shifts per day to three 8-hour shifts per day or two 10-hour shifts per day in order to increase capacity. Management realizes that shift start-up results in a loss of productivity that averages 0.5 hour per employee. The premium
A time standard is established allowing the operator 11.28 minutes per piece. The sales department expects to sell at least 2,000 of these parts in the next year. How many audits of this standard would you recommend be scheduled during the next 12 months?
If a day work shop was paying an average rate of $12.75 per hour and had 250 direct labor employees working, what would be the true direct labor cost per hour if during a normal month 40,000 hours of work were produced? Assume 21 working days per month.
The Dorben Co. is deciding whether it is worth releasing a new 'improved' model of its Widget. The following details have been collected:Standard time (min) = 1.00Direct material costs er widget = $0.50Direct labor costs per widget = $1.00Indirect labor costs per widget = $0.50Expense labor costs
Operators assemble pumps at an hourly rate of $10.00. The standard time for the assembly is 20 minutes. Direct material costs are $19.50/pump. Indirect labor and other overhead is calculated simply at a rate of $5.00/hr, while general office expenses are calculated at a rate of $2.00/hr. What is
What are the three general categories under which the majority of wage incentive plans may be classified?
Under the cash plan, what does the amount of money distributed depend on?
What determines the length of the period between bonus payments under the cash plan? Why is it poor practice to have the period too long? What disadvantages are there to the short period?
What are the characteristic features of the deferred profit sharing plan?
Why is the basis for the 'share and share alike' method of distribution?
What are the fundamental prerequisites of a successful wage incentive plan?
Why is it fundamental to keep time standards up-to-date if a wage incentive plan is to succeed?
What does unduly high performance indicate?
How would you go about establishing a climate to increase worker motivation?
What are some of the reasons for the failure of wage incentive schemes?
Differentiate between individual wage payment plans and group-type plans.
What is meant by the term fringe benefits?
Which company policies are included under nonfinancial incentives?
What are the characteristics of piecework? Plot the unit cost curve and operator learning curve for day work and piecework on the same set of coordinates.
Why did measured daywork become popular in the 1930s?
How does IMPROSHARE differ from the Rucker and the Scanlon plans?
Define 'profit sharing.'
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