Principles and Practice of Engineering (PE) – Industrial
Examination Questions And Correct Answers (Verified
Answers) Plus Rationales 2025/2026 Q&A | Instant
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1. Which of the following is the primary objective of industrial engineering?
A. Maximizing production cost
B. Minimizing worker satisfaction
C. Optimizing efficiency and productivity
D. Eliminating automation
Industrial engineering focuses on improving efficiency, productivity, and quality
in systems.
2. In a production system, which inventory type is held to buffer against
uncertainties in demand?
A. Cycle stock
B. Safety stock
C. Pipeline inventory
D. Anticipation inventory
Safety stock acts as a buffer against variability in demand or supply.
3. Which time study technique is most commonly used for analyzing manual
work?
A. Simulation
B. Line balancing
C. Stopwatch time study
D. Work sampling
Stopwatch time studies measure the time taken for tasks to set standard times
for operations.
4. The EOQ (Economic Order Quantity) model assumes:
A. Variable demand and infinite lead time
B. Shortages are allowed
C. Constant demand and instantaneous replenishment
D. Random ordering costs
,EOQ assumes steady demand and instant replenishment to minimize total
inventory costs.
5. Which quality tool uses a graphical representation of defects by category?
A. Histogram
B. Scatter diagram
C. Pareto chart
D. Control chart
Pareto charts help identify the most significant causes of defects using the
80/20 rule.
6. A bottleneck in a production line is:
A. The fastest operation
B. The operation with the lowest cost
C. The operation with the lowest throughput
D. The operation with the most workers
The bottleneck limits the capacity of the entire production system.
7. Which of the following is a lean manufacturing principle?
A. Increasing inventory
B. Maximizing machine idleness
C. Eliminating waste
D. Increasing batch sizes
Lean manufacturing aims to reduce waste and improve value-added activities.
8. In statistical process control, the UCL and LCL are used to:
A. Calculate production cost
B. Schedule maintenance
C. Monitor process variation
D. Determine labor efficiency
Upper Control Limit (UCL) and Lower Control Limit (LCL) identify if a process is
in statistical control.
9. The critical path in project management represents:
A. The cheapest tasks
B. The longest sequence of dependent tasks
C. Tasks with no dependencies
, D. The tasks with highest resource cost
The critical path determines the minimum project duration.
10. Which method is used to balance a production line for minimal idle time?
A. Pareto analysis
B. Line balancing
C. Work sampling
D. Simulation
Line balancing allocates tasks to workstations efficiently to minimize idle time.
11. Which type of maintenance is scheduled based on elapsed time or usage?
A. Corrective
B. Predictive
C. Preventive
D. Reactive
Preventive maintenance reduces breakdowns by maintaining equipment at
scheduled intervals.
12. Which forecasting method is best for short-term and stable demand?
A. Linear regression
B. Delphi method
C. Exponential smoothing
D. Econometric model
Exponential smoothing is simple and effective for short-term forecasts with
stable demand.
13. In a queuing system, λ represents:
A. Service rate
B. Arrival rate
C. Waiting time
D. Number of servers
λ denotes the average number of customers arriving per unit time.
14. Which of the following layouts is most suitable for high-volume
production of standardized products?
A. Process layout
B. Product layout
C. Fixed-position layout
Examination Questions And Correct Answers (Verified
Answers) Plus Rationales 2025/2026 Q&A | Instant
Download Pdf
1. Which of the following is the primary objective of industrial engineering?
A. Maximizing production cost
B. Minimizing worker satisfaction
C. Optimizing efficiency and productivity
D. Eliminating automation
Industrial engineering focuses on improving efficiency, productivity, and quality
in systems.
2. In a production system, which inventory type is held to buffer against
uncertainties in demand?
A. Cycle stock
B. Safety stock
C. Pipeline inventory
D. Anticipation inventory
Safety stock acts as a buffer against variability in demand or supply.
3. Which time study technique is most commonly used for analyzing manual
work?
A. Simulation
B. Line balancing
C. Stopwatch time study
D. Work sampling
Stopwatch time studies measure the time taken for tasks to set standard times
for operations.
4. The EOQ (Economic Order Quantity) model assumes:
A. Variable demand and infinite lead time
B. Shortages are allowed
C. Constant demand and instantaneous replenishment
D. Random ordering costs
,EOQ assumes steady demand and instant replenishment to minimize total
inventory costs.
5. Which quality tool uses a graphical representation of defects by category?
A. Histogram
B. Scatter diagram
C. Pareto chart
D. Control chart
Pareto charts help identify the most significant causes of defects using the
80/20 rule.
6. A bottleneck in a production line is:
A. The fastest operation
B. The operation with the lowest cost
C. The operation with the lowest throughput
D. The operation with the most workers
The bottleneck limits the capacity of the entire production system.
7. Which of the following is a lean manufacturing principle?
A. Increasing inventory
B. Maximizing machine idleness
C. Eliminating waste
D. Increasing batch sizes
Lean manufacturing aims to reduce waste and improve value-added activities.
8. In statistical process control, the UCL and LCL are used to:
A. Calculate production cost
B. Schedule maintenance
C. Monitor process variation
D. Determine labor efficiency
Upper Control Limit (UCL) and Lower Control Limit (LCL) identify if a process is
in statistical control.
9. The critical path in project management represents:
A. The cheapest tasks
B. The longest sequence of dependent tasks
C. Tasks with no dependencies
, D. The tasks with highest resource cost
The critical path determines the minimum project duration.
10. Which method is used to balance a production line for minimal idle time?
A. Pareto analysis
B. Line balancing
C. Work sampling
D. Simulation
Line balancing allocates tasks to workstations efficiently to minimize idle time.
11. Which type of maintenance is scheduled based on elapsed time or usage?
A. Corrective
B. Predictive
C. Preventive
D. Reactive
Preventive maintenance reduces breakdowns by maintaining equipment at
scheduled intervals.
12. Which forecasting method is best for short-term and stable demand?
A. Linear regression
B. Delphi method
C. Exponential smoothing
D. Econometric model
Exponential smoothing is simple and effective for short-term forecasts with
stable demand.
13. In a queuing system, λ represents:
A. Service rate
B. Arrival rate
C. Waiting time
D. Number of servers
λ denotes the average number of customers arriving per unit time.
14. Which of the following layouts is most suitable for high-volume
production of standardized products?
A. Process layout
B. Product layout
C. Fixed-position layout
