QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A |
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1. Which objective function is typically used in linear programming?
A. Maximize or minimize a linear combination of decision
variables
B. Maximize a nonlinear utility curve
C. Minimize variance only
D. Maximize entropy
Answer: A
Rationale: Linear programming involves optimizing a linear objective
subject to linear constraints.
2. In a queuing system, Little’s Law states that:
A. Average waiting time equals service time divided by arrival rate
B. Average number in system equals arrival rate times average
time in system
C. Utilization equals arrival rate minus service rate
D. Queue length is always minimized
Answer: B
Rationale: Little’s Law is L = λW, a fundamental relationship in queuing
theory.
3. Which probability distribution is commonly used to model the
number of arrivals in a fixed time period?
A. Normal
B. Exponential
, C. Poisson
D. Binomial
Answer: C
Rationale: The Poisson distribution models counts of events occurring
over time.
4. A process with a Cp greater than 1 indicates:
A. The process is out of control
B. The process mean is off-center
C. The process spread fits within specification limits
D. The process is incapable
Answer: C
Rationale: Cp measures process capability based on spread relative to
specs.
5. Which inventory model assumes constant demand and
instantaneous replenishment?
A. Newsvendor model
B. EOQ model
C. Quantity discount model
D. Periodic review model
Answer: B
Rationale: The Economic Order Quantity model assumes constant
demand and instant replenishment.
6. In work measurement, a time study is used to:
A. Evaluate product quality
B. Determine standard time for a task
C. Measure machine efficiency
D. Analyze market demand
, Answer: B
Rationale: Time studies establish standard times for work tasks.
7. Which layout is best suited for high-volume, standardized
production?
A. Process layout
B. Fixed-position layout
C. Cellular layout
D. Product layout
Answer: D
Rationale: Product layouts support high-volume, repetitive production.
8. In hypothesis testing, a Type I error occurs when:
A. A false null hypothesis is accepted
B. A true null hypothesis is rejected
C. A false null hypothesis is rejected
D. A true null hypothesis is accepted
Answer: B
Rationale: Type I error is rejecting a true null hypothesis.
9. What is the primary goal of ergonomics?
A. Increase machine utilization
B. Reduce production cost
C. Fit the job to the worker
D. Eliminate all hazards
Answer: C
Rationale: Ergonomics focuses on designing work to match human
capabilities.
10. In PERT analysis, the expected activity time is calculated
using:
A. (Optimistic + Pessimistic) / 2