BSIE Bachelor of Science in Industrial Engineering MCQ 5 — Questions and Answers
Question 1: The Taguchi loss function expresses product quality loss as proportional to:
- The deviation of a quality characteristic from its target value, squared (Correct answer)
- The number of defects per unit produced
- The probability of exceeding specification limits
- The ratio of process spread to tolerance
Correct answer: The deviation of a quality characteristic from its target value, squared
Taguchi's L(y) = k(y − T)² shows that loss increases with the square of deviation from the target, even within specification limits.
Question 2: In a value stream map, 'push' production means that:
- Customer demand pulls work through the system
- Work is produced based on downstream signals only
- Work is produced and pushed to the next stage based on a schedule or forecast (Correct answer)
- Kanban cards authorize production at each stage
Correct answer: Work is produced and pushed to the next stage based on a schedule or forecast
Push production schedules work based on forecast demand and sends output forward regardless of whether downstream can use it, often creating WIP buildup.
Question 3: Which inventory policy triggers an order when the inventory position falls to or below a specific reorder point, with a fixed order quantity?
- Periodic review (P) policy
- Continuous review (Q) policy (Correct answer)
- Base-stock (S) policy
- Min-max (s,S) policy
Correct answer: Continuous review (Q) policy
The continuous review (Q,r) policy orders a fixed quantity Q whenever the inventory position drops to the reorder point r.
Question 4: In process capability analysis, a Cpk of 1.33 indicates that the process:
- Is exactly centered between specification limits
- Is capable and meets a commonly accepted minimum standard (Correct answer)
- Is not capable and produces many defects
- Has a natural tolerance exactly equal to the specification width
Correct answer: Is capable and meets a commonly accepted minimum standard
Cpk ≥ 1.33 is a widely accepted benchmark for a capable process, corresponding to approximately 64 DPMO with a centered process.
Question 5: In the context of job shop scheduling, the Shortest Processing Time (SPT) dispatching rule minimizes which performance measure?
- Maximum lateness
- Average flow time (mean job completion time) (Correct answer)
- Number of tardy jobs
- Makespan
Correct answer: Average flow time (mean job completion time)
SPT minimizes average flow time and average waiting time, making it optimal for minimizing mean completion time in a single-machine environment.
Question 6: Which technique in industrial engineering breaks a complex task into therbligs (fundamental motion elements) for micro-motion analysis?
- Gantt charting
- Simo chart / therbligs analysis (Gilbreth method) (Correct answer)
- PERT network analysis
- Cause-and-effect diagramming
Correct answer: Simo chart / therbligs analysis (Gilbreth method)
Frank and Lillian Gilbreth developed therbligs—17 basic motion elements—used in simultaneous motion (simo) charts to analyze and improve work methods.
Question 7: A company uses MRP (Material Requirements Planning) to manage dependent demand. Which input document specifies the product structure and component quantities needed to build one parent item?
- Master Production Schedule (MPS)
- Bill of Materials (BOM) (Correct answer)
- Item Master File
- Inventory Status Record
Correct answer: Bill of Materials (BOM)
The Bill of Materials defines the parent-component relationships and quantities required, serving as MRP's structural input for calculating material requirements.
BSIE Bachelor of Science in Industrial Engineering MCQ 5
The Taguchi loss function expresses product quality loss as proportional to: