Smartbook chapter 5 study guide

True or false: In a supply-constrained process with multiple flows, the capacity for some flows will exceed demand.

False Reason: In a supply constrained process, the capacity for each flow is less than its demand.

Which of the following is the correct measure of capacity for an orthopedic doctor who treats a variety of patients?

Minutes of work per hour

True or false: Flow units that are scrapped complete the process.

False

True or false: If a resource has implied utilization greater than 100%, then it is always the bottleneck.

False

True or false: In a process with multiple flows, all of the resources have the same demand.

False

True or false: One ought to add capacity only to the resource with the highest implied utilization.

False

True or false: There is one processing time for a process that requires rework.

False

True or false: The first step in determining the bottleneck of a complicated process with multiple flows is calculating the implied utilization of each resource.

False Reason: Calculating the implied utilization is the 3rd step. Before one can calculate the implied utilization, one must first determine the demand through the resource as well as its capacity.

True or false: In a supply-constrained process with multiple flows, the capacity for some flows will exceed demand.

False In a supply constrained process, the capacity for each flow is less than its demand.

True or false: A beginning step in using the "minutes of work" concept when analyzing a rework problem is to establish a flow unit type for rework.

True

The presence of rework can _______ process capacity.

decrease

If the process' maximum implied utilization increases and everything else remains the same, then the maximum flow rate of a flow ______.

decreases

Increasing the yield ______ the number of flow units that need to be processed to get a certain number of good flow units

decreases

Increasing the yield ______ the number of flow units that need to be processed to get a certain number of good flow units.

decreases

Removing ________ flow units from the process is known as scrapping.

defective

Removing ___________ flow units from the process is known as scrapping.

defective

If a process with multiple flows is demand-constrained, then the actual flow rate equals the ______.

demand for the flow

Capacity in patients per time unit equals demand ______ implied utilization.

divided by

The maximum rate of a flow equals the demand rate for the flow ______ the process' maximum implied utilization

divided by

The total demand at the resource is always _______ implied utilization. (Check all that apply.)

equal to

When implied utilization is less than 100%, the flow rate will be _____ the demand rate.

equal to

In terms of improving a process with multiple flows--through capacity addition--which of the following is the most important goal?

find the bottleneck

When determining how much work each resource is capable of doing, indicate which of the following are the goals that we want to accomplish.

find the bottleneck determine the maximum flow rate evaluate the actual flow rate through the process

With a capacity constrained process with multiple flow units, the maximum flow rate for all units is determined by summing the maximum ______ rate for each type of flow.

flow

To have an implied utilization less than 100%, a resource must face a demand rate that is _______ 60 minutes per hour.

less than

The higher the implied utilization, the ______ the capacity per unit of time.

lower

The more a resource produces defects (given the same input flow rate) the ____ its yield.

lower

If a process with multiple flows is supply constrained, then the actual flow rate equals the ______ rate.

maximum flow rate

In a table used to calculate implied utilization, the resource's capacity and total demand are expressed in ______.

minutes of work

If the process yield decreases then that process needs to produce _____ units to get the same number of good units.

more

To calculate the demand for a resource in minutes per hour, you _______ the demand rate per hour by the minutes spent per flow unit.

multiply

To determine hourly capacity expressed in minutes of work per hour at a resource, ______ the number of workers by 60 minutes per hour.

multiply

In a table used to calculate implied utilization, each resource will occupy __________ row(s)

one or 1

Which metric cannot exceed 100%?

utilization

Each column in the demand table corresponds to how many different types of flows?

1

Using the "minutes of work" concept, indicate the order of steps from first to last for analyzing the resource where rework occurs.

1. Given nature of process, determine time unit that is easiet 2. for each flow unit type determine the demand per unit of time 3. compute the total demand per time unit by adding the demands for each flow unit type 4. Divide the resources total demand by its capacity computing implied utilization for the resource

List--from the beginning to the end--the order of steps required to find the bottleneck and flow rates in a process with multiple flows.

1. evaluate the demand table 2. Determine capacity for each resource 3. Calculate and evaluate the implied utilization for each resource 4. Determine the capacity for each type of flow

If each resource in a process has a yield of 100%, then the process will have a yield of ____%

100

Suppose a step in a process with flow unit dependent processing times is staffed by four employees, each of which get a five minute break each hour. What is the available time at this step?

220 minutes

Four workers will provide an hourly capacity of ______

240 minutes

Suppose the demand rate for flow units of type 1 is 4 units per hour and implied utilization is 125%. What is the flow rate for flow units of type 1?

3.2 units per hour

Which of the following statements are true about a process that involves rework?

A process that involves rework has different processing times. A process involving rework can be solved using the "minute of work" flow unit concept. A process that includes rework has multiple flows.

A process that has one type of flow through a series of resources. > A process that has multiple types of flow patterns through a series of resources. >

Demand is the same across resources Demand varies across resources

True or false: The capacity of a worker should always be expressed in "minutes of work per hour."

False The correct unit of measure varies depending on the business. Since the duration of calls in a call center is expressed in seconds, then it is logical to express the capacity of a worker in "seconds of work per hour."

True or false: Patient is an appropriate flow unit for process analysis when different patients require different amounts of time with a doctor.

False With different patients requiring different amounts of time, "one patient" doesn't adequately represent how much capacity he/she requires.

Given a supply-constrained process, which of the following actions enables management to control the maximum flow rate for a given type of customer?

Given one customer type a higher priority status. Shift resources among customer types.

What can be inferred from a doctor's statement that "some patients have simple issues whereas other have more complex problems."

The process has flow-dependent processing times. The process has multiple flows

True or false: Consider the applications for a driver's license in the department of motor vehicles. Suppose those who are getting a driver's license for the first time must take an extra test that is administered by a designated staff member. To analyze the processes in this department, one would need a different flow unit for those who have to renew their driver's license and a different one for those who are getting a driver's license for the first time.

True

True or false: The yield of a resource is between 0% and 100%.

True

True or false: When two products require different resources in a process you must define them as different flow units.

True

True or false: Implied utilization can be greater than 100%.

True Since implied utilization relates demand to capacity it can be greater than 100% when capacity isn't great enough to meet demand.

True or false: One uses "minutes of work" to express capacity, because it enables one to add together different types of work.

True When a nurse practitioner sees 10 patients a day all with different health issues, we can add up the "minutes of work" performed even through the issues were quite different. "Minutes of work" is a common unit of measure that enables a manager to evaluate a resource's capacity.

If one resource in a process ALWAYS produces defective parts, then the process yield is ____%

actually 0

To calculate demand for a resource in minutes per hour with different flow unit types, you _______ the times spent serving each flow unit type.

add

To calculate the flow rate across all units, you ____ the flow rates of each unit.

add

To calculate the total demand for a resource, you ______ the workloads associated with each customer type

add

To calculate the total demand for a resource, you ______ the workloads associated with each customer type.

add

When implied utilization is greater than 100%, the process is ______ constrained.

capacity

Management ______ affect the maximum flow rate of a given customer type.

can

In a demand-constrained process with multiple flows, the capacity for each flow is ______ its demand.

greater than

To have an implied utilization that is greater than 100%, a resource must face demand that is _____ 60 minutes per hour.

greater than

The higher the total demand at a resource, the _____ its implied utilization.

higher

The less a process produces defective flow units, the _____ its yield.

higher

The lower the capacity at a resource, the _____ its implied utilization.

higher

With multiple flow unit types the bottleneck is the resource with the ______ implied utilization.

highest

Which metric allows you to deduce how much demand exceeds the capacity of the process?

implied utilization

When determining which resource to add capacity to, one should consider both __________ utilization and ____________margin.

implied, profit

Rework can ________ the demands placed upon a resource.

increase

If the flow rate of good output of a process increases--and everything else remains the same--then the process yield ______.

increases

If the processing time of flow units that require rework increases, then the weighted average processing time at the resource where rework is done, ______.

increases

If the processing time per flow unit ______ and everything else remains the same, the workload of a resource increases.

increases

Capacity alone does not dictate the bottleneck because the resource with the lowest capacity may be visited the ______ often.

least

To calculate the workload of a resource that serves different flow unit types, one must know which of the following?

processing time for each patient type demand rate for each patient type

The demand table shows the number of types of flows that need to be processed by each _______.

resource

When determining the bottleneck in the presence of multiple flow units you must recognize that not every flow unit is going to every _____________.

resource

The extra or repeated activities performed on a defective flow unit are collectively called

rework

Which of the following are correct expressions of the capacity of a worker?

seconds of work per hour minutes of work per hour

What information is required to calculate the weighted average processing time?

the processing time for each flow that passes through a resource fraction of each flow that passes through a resource