Advantages of simulation models include all of the following EXCEPT:
Time compression
Better understanding of the real system
Answers what-if questions
More realistic replication of a system than mathematical analysis
individuals
Consistency of models of the same system developed by different
Show or Reveal the Answer
Consistency of models of the same system developed by different
Key Points: Due to a lack of a standardized approach, models of the system built by different individuals may differ widely.
Key Points: Due to a lack of a standardized approach, models of the system built by different individuals may differ widely.
Key components of wait line simulations include all of the following except:
Arrival rate
Service rate
Scheduling blocks
Queue structure
Show or Reveal the Answer
Scheduling blocks
Question: An ink manufacturing company manager draws a control chart that displays a process mean. The manager is concerned that the process of ink packages assembly is inconsistent and inefficient. The control chart below shows that the process is out of control because:
Eight points are above the center line
Process means are too close to the LCL
Process means are too far from the UCL
One point is above the center line
Show or Reveal the Answer
Eight points are above the center line
Explanation: The process is out of control because eight points are above the center line.
A process is said to be out of control if eight or more points fall on one side of the process control chart center line. The center line is designed to measure the mean of a process. If a process capability study shows that eight or more points fall on one side of the center line, it indicates that the process has shifted in its performance and the underlying cause should be investigated.
Explanation: The process is out of control because eight points are above the center line.
A process is said to be out of control if eight or more points fall on one side of the process control chart center line. The center line is designed to measure the mean of a process. If a process capability study shows that eight or more points fall on one side of the center line, it indicates that the process has shifted in its performance and the underlying cause should be investigated.
Question: Penmanship Inc. produces high quality pencils for a select group of customers. Within each production cycle of 10,000 pencils, there are two types of defects that can occur at the following rates: wrong dimensions (80 defects) and faulty eraser (45 defects). What is the Defects per Unit (DPU) measurement of this process?
0.0575
0.0215
0.0275
0.0125
Show or Reveal the Answer
0.0125
Explanation: The DPU measurement of this process is 0.0125.
Defects per Unit or DPU is a process performance metric that calculates the defect occurrence rate depending on a production cycle or process. In this example, the total number of defects per 10,000 pencils produced = 80 + 45 = 125 defects.
The DPU = Total Number of Defects ÷ Total Number of Units
= 125 ÷ 10, 000
= 0.0125
Explanation: The DPU measurement of this process is 0.0125.
Defects per Unit or DPU is a process performance metric that calculates the defect occurrence rate depending on a production cycle or process. In this example, the total number of defects per 10,000 pencils produced = 80 + 45 = 125 defects.
The DPU = Total Number of Defects ÷ Total Number of Units
= 125 ÷ 10, 000
= 0.0125
Question: What is a balanced experiment?
Same number of factors as levels
Each factor level appears the same number of times
At least one trial for all possible combinations of factors and levels
At least two repetitions for each trial
Show or Reveal the Answer
Each factor level appears the same number of times
Question: SIPOC provides a view of the process that contains approximately how many steps?
6-25
5-7
8-15
25-40
Show or Reveal the Answer
5-7
Question: All of the following are disadvantages of simulation EXCEPT:
No guarantee that the model will provide a good answer
No way to prove that a simulation's model performance is completely reliable
Simulation may be difficult to develop
Required special training to become proficient
Disrupts ongoing activities of the real system
Show or Reveal the Answer
Disrupts ongoing activities of the real system
Key Points: Simulation does not disrupt the ongoing activities of the real system.
Key Points: Simulation does not disrupt the ongoing activities of the real system.
Question: The best process flow structure to use for making automobiles is?
Group technology cell
Continuous flow
Job shop
Assembly line
Batch shop
Show or Reveal the Answer
Assembly line
Key Points: An assembly line is best of making cars.
Key Points: An assembly line is best of making cars.
Question: The type of processing structure that is used to produce gasoline, chemicals, and steel is:
Assembly Line
Continuous Flow
Job Shop
Project
Batch
Show or Reveal the Answer
Continuous Flow
Key Points: Job shop produces low standardized products, batch produces multiple products and assembly line produces fewer major products. Project, on the other hand, is not a processing structure.
Key Points: Job shop produces low standardized products, batch produces multiple products and assembly line produces fewer major products. Project, on the other hand, is not a processing structure.
Question: A break even point indicates which of the following:
The point where cost is minimized
The point where profit is maximized
The point where we are indifferent between two options
The point where we are most efficient
All of the above
Show or Reveal the Answer
The point where we are indifferent between two options
Question: According to Hayes and Wheelwright, which of the following is not a major process flow structure?
Batch
Continuous Flow
Job Shop
Project
Assembly Line
Show or Reveal the Answer
Project
Key Points: A project is a type of job.
Key Points: A project is a type of job.
Question: Goldratt's rule of production scheduling include all but:
Do not balance the capacity - balance the flow
Utilization and activation of a resource is not the same thing
An hour saved at a non-bottleneck is a mirage
A process batch should be fixed both along its route and in time
Priorities can be set only by examining the system's constraints
Show or Reveal the Answer
A process batch should be fixed both along its route and in time
Key Points: According to Goldratt, a process batch should be variable (and not fixed) both along its route and in time.
Key Points: According to Goldratt, a process batch should be variable (and not fixed) both along its route and in time.
Question: Desirable features of simulation software include which of the following capabilities?
I. Interactive
II. User-friendly
III. Macro functions
IV. Animation
I only
I and II only
I, II, and III only
II, III, and IV only
I, II, III, and IV
Show or Reveal the Answer
I, II, III, and IV
Key Points: All are desirable features of simulation software.
Key Points: All are desirable features of simulation software.
Question: The steps in Goldratt's Theory of Constraints problem solving approach include:
Identify the system constraint
Decide how to remove the system constraints
Elevate the system constraint to highest priority
A and B
A and C
A, B, and C
Show or Reveal the Answer
A, B, and C
Key Points: All three are part of Goldratt's theory of constraints.
Key Points: All three are part of Goldratt's theory of constraints.
Question: A process flow diagram shows how parts are put together to make a product.
TRUE
FALSE
Show or Reveal the Answer
FALSE
Key Points: A process flow diagram shows the steps required to make a product. An assembly diagram shows how the parts go together.
Key Points: A process flow diagram shows the steps required to make a product. An assembly diagram shows how the parts go together.
Question: An example of a business/industry that uses batch flow process structure is:
Automobile assembly
Heavy equipment
French restaurant
Sugar refinery
Commercial printer
Show or Reveal the Answer
Heavy equipment
Key Points: Commercial printer and French restaurants are examples of job shop. Automobile assembly uses an assembly line structure while sugar refinery uses continuous flow structure.
Key Points: Commercial printer and French restaurants are examples of job shop. Automobile assembly uses an assembly line structure while sugar refinery uses continuous flow structure.
Question: A major process flow structure is the fabrication shop.
TRUE
FALSE
Click here to know the Answer
FALSE
Key Points: This is not a major process flow structure.
Key Points: This is not a major process flow structure.
Question: The type of processing structure that is used for producing discrete products at higher volume is:
Continuous Flow
Project
Job Shop
Assembly Line
Batch
Show or Reveal the Answer
Assembly Line
Key Points: Job shop produces low standardized products, batch produces multiple products and continuous flow produce is high-standardized products. Project, on the other hand, is not a processing structure.
Key Points: Job shop produces low standardized products, batch produces multiple products and continuous flow produce is high-standardized products. Project, on the other hand, is not a processing structure.
Question: Operational measures include:
Inventory
Operating expenses
Throughput
A and B
B and C
A, B, and C
Show or Reveal the Answer
A, B, and C
Key Points: All three are operational measures.
Key Points: All three are operational measures.
Question: RISK is an add-in program that works with Microsoft Excel and has the capability of adding many useful simulated-related functions to the spreadsheet.
TRUE
FALSE
Show or Reveal the Answer
TRUE
Question: Which of the following according to Goldratt is not a component of production cycle time?
Setup time
Queue time
Wait time
Process time
Maintenance time
Show or Reveal the Answer
Maintenance time
Key Points: Idle time and not maintenance time is the 5th component of production cycle time.
Key Points: Idle time and not maintenance time is the 5th component of production cycle time.
No comments:
Post a Comment