OPMA Ch 6
The term "assembly line" refers to progressive assembly linked by some material handling device.
TRUE
Assembling-to-order means moving the customer order decoupling point from finished goods to components.
TRUE
One methodology used to evaluate equipment investment decisions where the investment entails an initial investment, fixed costs, and variable costs is Break-Even Analysis.
TRUE
One trade-off illustrated by the product-process matrix is between flexibility and cost.
TRUE
The closer the customer is to the customer order decoupling point the more quickly the customer receives the product.
TRUE
Using the assembly-line balancing procedure, which of the following is the required cycle time if the production time in minutes per day is 1440 and the required output per day in units is 2000?
A. 0.72
Which of the following is not a basic type of process structure?
A. Product-process matrix
A difference between project and continuous flow categories of process flow structures is which two of the following?
A. The size and bulk of the product
Using the assembly-line balancing procedure, which of the following is the theoretical minimum number of workstations if the task times for the six tasks that make up the job are 4, 6, 7, 2, 6, and 5 minutes, and the cycle time is 10 minutes?
A.3
You have just determined the actual number of workstations that will be used on an assembly line to be 6 using the assembly-line balancing procedure. The cycle time of the line is 5 minutes and the sum of all that tasks required on the line is 25 minutes. Which of the following is the correct value for the resulting line's efficiency?
B. 0.833
According to Little's law, which of the following can be used to estimate work-in-process inventory?
B. Throughout rate times Flow time
Which of the following basic types of process structures is one which similar equipment or functions are grouped together?
B. Workcenter
You have just determined the actual number of workstations that will be used on an assembly line to be 8 using the assembly-line balancing procedure. The cycle time of the line is 10 minutes and the sum of all that tasks required on the line is 60 minutes. Which of the following is the correct value for the resulting line's efficiency?
C. 0.750
Assume a fixed cost for a process of $15,000. The variable cost to produce each unit of product is $10 and the selling price for the finished product is $25. Which of the following is the number of units that has to be produced and sold to break-even?
E. 1,000 units
The placement of which of the following is not determined by production process organization decisions?
E. Emergency Exits
In balancing an assembly line, workstation cycle time has to be less than the time between successive units coming off the end of the line.
FALSE
Little's law states that supply chain processes can be regarded as unrelated and thus treated and analyzed separately.
FALSE
In assembly-line balancing the theoretical minimum number of workstations is found by a ratio of the sum of all task times divided by the cycle time.
TRUE
In designing a production layout a flexible line layout might have the shape of a "U".
TRUE
In designing a production line mixed-model line balancing might be used by JIT manufacturers.
TRUE
Little's law can be thought of as a relationship between units and time.
TRUE
In a workcenter, machine A has a ten minute set-up time per batch and a two minute per unit run time. Machine B performs the identical function but has a set-up time of thirty minutes and a one minute run time per unit. The workcenter makes products in batches ranging from one unit to one hundred units. Assuming capacity is not a limitation on either machine, on which batches should machine B be used?
B. Batches of more than 20 units should be run on machine B
Using the assembly-line balancing procedure, which of the following is the theoretical minimum number of workstations if the task times for the eight tasks that make up the job are 7, 4, 7, 8, 9, 4, 3 and 6 minutes, and the cycle time is 8 minutes?
C. 6
Assume a fixed cost for a process of $120,000. The variable cost to produce each unit of product is $35, and the selling price for the finished product is $50. Which of the following is the number of units that has to be produced and sold to break-even?
C. 8,000 units
Which of the following basic types of process structures is one which equipment or work processes are arranged according to the progressive steps by which the product is made?
D. Assembly line
Which of the following is not a step in developing a manufacturing cell layout?
D. Disposing of left-over machinery and outsourcing ungrouped processes
Which of the following is not considered a major work flow structure?
D. Fabrication
According to Little's Law, which of the following ratios is used to find throughput rate?
D. Inventory/Flow time
When balancing an assembly line, which of the following is not a way to reduce the longest task time below the required workstation cycle time?
D. Speed up the assembly line transfer mechanism
A continuous process indicates production of discrete parts moving from workstation to workstation at a controlled rate.
FALSE
A make-to-order firm will work with the customer to design the product, and then make it from purchased materials, parts, and components.
FALSE
Break-Even Analysis can only be used in production equipment decision making when dealing solely with fixed costs, no variable costs.
FALSE
The essential issue in satisfying customers in the make-to-stock environment is to balance the cost of the finished item against the willingness of the consumer to pay for it.
FALSE
The time needed to respond to a customer's order is called the customer response time.
FALSE
Workcenter layouts allocate dissimilar machines into cells to work on products that have dissimilar processing requirements.
FALSE
Workstation cycle time is the time between successive units coming off the end of the assembly line.
FALSE
A general purpose machine is less capable than a special purpose machine in certain tasks but can perform a broader variety of tasks.
TRUE
A high-level map or diagram of a supply chain process can be useful to understand how material flows and where inventory is held.
TRUE
A project layout is characterized by a high degree of task ordering.
TRUE
A project layout is characterized by a relatively low number of production units in comparison with process and product layout formats.
TRUE
An example of an assemble-to-order firm is Dell Computer.
TRUE
The objective of mixed-model line balancing is to meet the demand for a variety of products and avoid building high inventories.
TRUE
The product-process matrix shows the relationship between process structures and product volume and variety characteristics.
TRUE
The volume requirements for the product are one determinant of the choice of which process structure to select.
TRUE
For the purposes of assembly-line balancing, the required workstation cycle time is found by dividing production time per day by the required units of output per day.
TRUE
If the sum of the task times required to produce a product is 45 minutes and the cycle time for the same product is 10 minutes. Thus, the theoretical minimum number of workstations is 5 using the assembly-line balancing procedure.
TRUE
The essential issue in satisfying customers in the make-to-stock environment is to balance the level of finished inventory against the level of service to the customer.
TRUE
The first step in balancing an assembly line is to specify the precedence relationships among tasks to be performed on the line.
TRUE
The focus in the make-to-stock environment is on providing finished goods where and when the customers want them.
TRUE
The efficiency of an assembly-line is found by a ratio of the sum of all task times divided by the cycle time.
FALSE
If the sum of the task times required to produce a product is 80 minutes and the cycle time for the same product is 15 minutes, the theoretical minimum number of workstations is 8 using the assembly-line balancing procedure.
FALSE
Process selection refers to the strategic decision of choosing the volume of output to produce in a manufacturing facility depending upon the way that facility produces.
FALSE
Process selection refers to the strategic decision of selecting which kind of production processes to use to produce a product or provide a service.
FALSE
The assembly-line balancing procedure determines the precedence relationships of manufacturing tasks.
FALSE
The closer the customer is to the customer order decoupling point the longer it takes the customer to receive the product.
FALSE
Break-Even Analysis can be used to help decide whether to perform a task with a special purpose machine or with a general purpose machine.
TRUE
Engineer-to-order firms will work with the customer to design the product, and then make it from purchased materials, parts, and components.
TRUE
You are hired as a consultant to decide if your client should purchase a new, highly specialized, piece of equipment. The product to be produced by this equipment is forecast to have a total worldwide demand of 15,000 units over the entire product life. The initial investment to acquire and install the equipment is $256,000. The variable cost to produce each unit will be $15 and the selling price for the finished product will be $30. Which of the following best describes the situation the firm is facing?
B. The company's total margin will be less than its investment
Which of the following is a basic type of process structure?
D. Workcenter
One difference between an assembly line process flow and a continuous process flow is that on the assembly line the flow is discrete rather than continuous.
TRUE
Using the assembly-line balancing procedure, which of the following is the required cycle time in minutes per unit if the daily production time is 480 minutes and the required daily output is 50 units?
C. 9.6
