Question 1

Using the random order or "whim" priority rule to sequence production jobs means that supervisors select whichever job they feel like running first.

Accepted Answer

The statement accurately describes the random order or "whim" priority rule. Supervisors have no set criteria or objective factors to follow when sequencing production jobs- they simply choose based on personal preference or immediate availability.

Question 2

A system that "backward schedules" is designed to determine and report the earliest date an order can be completed.

Accepted Answer

Backward scheduling starts with the due date and schedules the last operation first and then works backward to determine the latest start date that can meet the customer's due date, not the earliest completion date.

Question 3

In infinite loading no consideration is given directly to whether there is sufficient capacity at the resources required to complete the work,nor is the actual sequence of the work as done by each resource in the work center considered.

Accepted Answer

In infinite loading, the focus is on maximizing the utilization of resources without considering capacity constraints or the actual sequence of work done by each resource.

Question 4

The FCFS priority rule used in sequencing production jobs will always result in a better solution than the LCFS rule.

Accepted Answer

It is not necessarily true that FCFS (First-Come-First-Serve) priority rule will always result in a better solution than LCFS (Last-Come-First-Serve) rule in sequencing production jobs. It depends on the specific characteristics of the production jobs, such as their length or priority level. Additionally, there are other sequencing rules that could also result in better solutions than FCFS or LCFS depending on the circumstances.

Question 5

In production scheduling the process of determining which job to start first on some machine or in some work center is known as sequencing or priority sequencing.

Accepted Answer

This is a correct statement.

Question 6

Shop-floor control (or production activity control)can involve expediting late and critical orders.

Accepted Answer

Shop-floor control involves monitoring and expediting orders to ensure timely completion, especially for late and critical orders.

Question 7

Initiating performance of scheduled work is commonly termed "dispatching" of orders.

Accepted Answer

Initiating performance of scheduled work is commonly referred to as dispatching.

Question 8

Shop-floor control (or production activity control)can involve reviewing the status and controlling the progress of orders as they are being worked on.

Accepted Answer

Shop-floor control refers to the process of monitoring the production process and progress of orders on the shop floor. It involves activities such as tracking the status of work orders, scheduling production activities, and ensuring that deadlines are met.

Question 9

A shop-floor control system is a system that uses data from the shop floor as well as data processing files to maintain and communicate status information on shop orders and work centers.

Accepted Answer

This is the definition of a shop-floor control system.

Question 10

Theoretically,all schedules are feasible when finite loading is used.

Accepted Answer

Finite loading takes into account the capacity of resources and ensures that tasks are scheduled within their available capacity. Therefore, all schedules generated using finite loading should be feasible.

Question 11

The textbook underscores the importance of scheduling with the phrase "workflow equals cash flow and scheduling lies at the heart of the process".

Accepted Answer

The textbook states that "workflow equals cash flow" and that "scheduling lies at the heart of the process" (page 143).

Question 12

The assignment method of job sequencing is a special case of the transportation method of linear programming.

Accepted Answer

The assignment method is a special case of the transportation method of linear programming where the number of sources and destinations are equal, with a single unit of supply and demand at each location. In the case of job sequencing, the assignment method is used to allocate jobs to machines or workers to maximize efficiency.

Question 13

In finite loading no consideration is given directly to whether there is sufficient capacity at the resources required to complete the work,nor is the actual sequence of the work as done by each resource in the work center considered.

Accepted Answer

Finite loading involves scheduling jobs only to the extent that resources (machinery, workstations, labor) are available, taking into account the capacity of each resource and the sequence of operations to ensure that no resource is overloaded.

Question 14

A backward schedule tells when an order must be started in order to be done by a specific date.

Accepted Answer

A backward schedule works backwards from a specific deadline to determine when tasks must be started and completed in order to meet that deadline.

Question 15

The LCFS and Johnson's priority rules are basically the same except LCFS uses due dates as a major determiner of job sequence.

Accepted Answer

LCFS (Last Come, First Served) prioritizes jobs based on their arrival times, serving the most recently arrived job first, without considering due dates. Johnson's priority rules are used for minimizing the total time needed to complete a set of jobs on two machines, focusing on the order of jobs to optimize processing time, not on arrival times or due dates directly.

Question 16

Johnson's rule,a priority rule used in sequencing production jobs is used only in production situations where we are dealing with one machine or one stage of production activity.

Accepted Answer

Johnson's rule is specifically designed for scheduling jobs on two machines or two stages of production activity, not just one. It aims to minimize the total time needed to complete all jobs on both machines.

Question 17

The objective of Johnson's rule for job sequencing is to minimize flow time from the beginning of the first job until the completion of the last job.

Accepted Answer

This is the main objective of Johnson's rule, which is a technique used to prioritize and sequence jobs to minimize the total time required to complete them.

Question 18

Under the STR/OP sequencing priority rule,orders with the jobs with the longest STR/OP are run first.

Accepted Answer

Under the STR/OP (Shortest Time Remaining per Operation) sequencing priority rule, orders with the shortest time remaining per operation are run first, not the longest.

Question 19

Priority rules are the rules used to obtain a job sequence in production scheduling.

Accepted Answer

Priority rules are indeed used to obtain a job sequence in production scheduling. These rules help to determine the order in which jobs should be completed based on various factors such as due dates, processing time, and machine availability.

Question 20

A work center is a physical area of the business in which productive resources are organized and work is completed.

Accepted Answer

A work center is a physical area of the business where resources such as personnel, equipment, and materials are organized and used to complete specific tasks or operations.

Quiz 19: Scheduling