Operations Final Exam Prep

88 Questions | Total Attempts: 853

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  • 1. 
    A bottling process sometimes results in overfills or underfills. Overfills are especially damaging to the equipment. Which process capability index would this company most want to monitor?
    • A. 

      Cp

    • B. 

      Cpl

    • C. 

      Cpu

    • D. 

      Cpk

  • 2. 
    A company currently has no items in inventory. The demand for the next four months is 200, 400, 250 and 350 units. Assuming a level production rate of 250 units per month, determine the month in which a backorder will materialize.
    • A. 

      The month in which demand is 250

    • B. 

      The month in which demand is 400

    • C. 

      the month in which demand is 200

    • D. 

      The month in which demand is 350

  • 3. 
    A manufacturer of printed circuit boards produces boards. To monitor the number of boards that do not pass a functional test, a(n) ____ is used.
    • A. 

      X-bar chart

    • B. 

      P-chart

    • C. 

      C-chart

    • D. 

      R-chart

  • 4. 
    A moving average model works best when ____ in the time series.
    • A. 

      Only irregular variation is present

    • B. 

      Only a trend is present

    • C. 

      There is no trend, seasonal, or cyclical pattern

    • D. 

      Trend, seasonal, and cyclical patterns all exist

  • 5. 
    A tool to help determine how a process works and what it is supposed to do is a
    • A. 

      Run chart

    • B. 

      Cause-and-effect diagram

    • C. 

      Scatter diagram

    • D. 

      Flow chart

  • 6. 
    A tool to help focus on the most significant problem is:
    • A. 

      Flowchart

    • B. 

      Pareto analysis

    • C. 

      Cause-and-effect diagram

    • D. 

      Scatter diagram

  • 7. 
    A withdrawal Kanban
    • A. 

      Authorizes production

    • B. 

      Authorizes suppliers to produce

    • C. 

      Authorizes the transfer of an empty container

    • D. 

      Autorizes shipping to customers

  • 8. 
    A(n) ____ is a statement of how many finished items are to be produced and when they are to be produced
    • A. 

      Aggregate Plan

    • B. 

      Master Production Schedule

    • C. 

      Material Requirements Plan

    • D. 

      Capacity Requirements Plan

  • 9. 
    According to Chapter 13, a candy manufacturer makes use of all of the following concepts and methods of resource management EXCEPT
    • A. 

      Dividing the year into 13 periods of four weeks each

    • B. 

      All types of candy are converted into a poundage figure for purposes of aggregate planning

    • C. 

      The amount of inventory investment is a top priority and they must be kept low

    • D. 

      The policy of the firm is to allow the workforce to vary, that is, a chase strategy

  • 10. 
    According to the Theory of Constraints, ____ is the amount of money generated per time period through actual sales.
    • A. 

      Throughput

    • B. 

      Non-Bottleneck work activity

    • C. 

      Non-physical constraint

    • D. 

      Utilization

  • 11. 
    According to the Toyota Motor Company, waiting time is a necessary evil in production and is not classified as waste.
    • A. 

      True

    • B. 

      False

  • 12. 
    According to the Toyota Motor Company, which of the following is not one of the seven major waste categories?
    • A. 

      Overproduction

    • B. 

      Transportation

    • C. 

      Motion

    • D. 

      Single-piece flow

  • 13. 
    All of the following are important concepts in forecasting except
    • A. 

      Determining the planning horizon length.

    • B. 

      Determining the time bucket size (i.e., year, quarter, month, week, day, etc.).

    • C. 

      Using a smoothing constant of 0.1 in Delphi methods of forecasting

    • D. 

      . Identifying cyclical patterns.

  • 14. 
    All of the following are important in choosing a forecasting method except
    • A. 

      Smoothing constant (alpha)

    • B. 

      Time span for which forecast is made

    • C. 

      Data requirements

    • D. 

      Quantitative skills needed

  • 15. 
    An inventory item can be
    • A. 

      Only a parent

    • B. 

      Only a component

    • C. 

      Both a parent and a component

    • D. 

      Neither a parent or a component

  • 16. 
    An R-square of 0.80 means
    • A. 

      80% of the variability in the independent variable is explained by the dependent variable

    • B. 

      80% of the variability in the dependent variable is explained by the independent variable

    • C. 

      80% of the variability in the dependent variable is not explained by the independent variable

    • D. 

      Multiple regression was used

  • 17. 
    Assigning people to tasks, setting priorities for jobs and scheduling equipment fits best with which level of the generic framework for resource planning?
    • A. 

      Aggregate planning - Level 1

    • B. 

      Disaggregation - Level 2

    • C. 

      Execution - Level 3

    • D. 

      Capacity requirements planning

  • 18. 
    C-charts
    • A. 

      Are used for the fraction of non-conforming items

    • B. 

      Count the number of non-conformances (defects) per unit

    • C. 

      Use continuous metrics

    • D. 

      Can have negative lower control limits

  • 19. 
    Chapter 10 describes how a clogged court system tried to solve the bottleneck problem regarding the processing of tens of thousands of foreclosures by
    • A. 

      Hiring extra retired judges to process foreclosures.

    • B. 

      Shifting civil and criminal court work to slack periods so foreclosures could be processed

    • C. 

      Increase the price of court filing fees to influence demand

    • D. 

      Apply the Theory of Constraints to this court system

  • 20. 
    Common cause variation is
    • A. 

      Controllable at the sources

    • B. 

      Called assignable cause

    • C. 

      Can be reduced by statistical process control methods

    • D. 

      Inherent (i.e., present) in every process

  • 21. 
    Exponential smoothing...
    • A. 

      Works best for long-term forecasting

    • B. 

      Yields a mathematically optimal solution

    • C. 

      Assigns weights to past data that decay exponentially as the data gets older

    • D. 

      Cannot be adapted to handle trend

  • 22. 
    For a non-bottleneck activity
    • A. 

      Utilization must be near 100%

    • B. 

      An hour lost has no effect on total process or factory output.

    • C. 

      Use large order sizes to minimize setups

    • D. 

      Work-in-process buffer inventory should be placed in front of non-bottlenecks

  • 23. 
    For single exponential smoothing
    • A. 

      Large values of alpha place more emphasis on recent data

    • B. 

      Small values of alpha place more emphasis on recent data

    • C. 

      Very volatile time series with substantial random variability should use a large value for alpha

    • D. 

      Very stable time series with little random variability should use small values for alpha

  • 24. 
    Ford Motor Company has decided to switch to a pull system of manufacturing and distribution for its vehicles. Which one of the following is most likely to occur?
    • A. 

      Inventory levels will increase.

    • B. 

      Component parts and subassemblies will be replenished only when needed

    • C. 

      Dealer parking lot space will need to be increased

    • D. 

      Finished goods inventory will decrease, but raw materials and work-in-process inventories will increase.

  • 25. 
    Historically, the average proportion of defective bars has been 0.015. Samples will be of 100 bars each. Calculate the UCL and LCL for a p-chart using z = 3. Suppose a sample had 0.044 defectives. What would you do?
    • A. 

      Nothing

    • B. 

      Look for assignable causes

    • C. 

      Delete the sample with 0.044 defects and take another sample tha tis better

    • D. 

      None of these choices