FE Industrial and Systems practice questions with worked solutions
FE Industrial and Systems practice is largely a model-selection exercise. Name the decision, objective, constraints, assumptions, and requested output before touching the calculator.
Try an original Industrial & Systems question
Choose an answer before reviewing the solution. Pay attention to the governing model and setup, not only the final choice.
An M/M/1 service system has an arrival rate of 4 customers per hour and a service rate of 5 customers per hour. The average number of customers in the system is most nearly:
A better review loop for FE Industrial and Systems
Practice creates useful evidence only when the review explains why the setup worked or failed. Use this three-part loop after every question.
Classify the model
Distinguish optimization, inventory, queueing, reliability, forecasting, simulation, and economic comparison.
Define the output
Separate a decision variable, objective value, probability, rate, and performance measure.
Interpret the answer
State what the number means operationally and whether the assumptions fit the system.