Practice Test GeeksMEM - Master of Engineering Management Practice Test
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Operations Management Flashcards

7 cards from real MEM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A hospital emergency department has an average arrival rate of 10 patients/hour and an average service rate of 12 patients/hour. Using M/M/1 queuing, what is the average time a patient spends in the system?

    Answer: 30 minutes

    W = 1/(μ−λ) = 1/(12−10) = 0.5 hours = 30 minutes.

  2. Which supply chain risk mitigation strategy involves holding excess inventory at strategic locations to buffer against supply disruptions?

    Answer: Forward stocking

    Forward stocking places buffer inventory closer to demand points to absorb upstream supply disruptions quickly.

  3. An operation has a cycle time of 4 minutes per unit and a shift of 480 minutes with 60 minutes of planned downtime. What is the takt time if customer demand is 100 units per shift?

    Answer: 4.2 minutes

    Available time = 480 − 60 = 420 minutes; takt time = 420 / 100 = 4.2 minutes per unit.

  4. In the DMAIC framework used in Six Sigma projects, the 'Analyze' phase primarily focuses on which activity?

    Answer: Identifying root causes of defects

    The Analyze phase uses statistical tools to identify and verify the root causes driving process variation and defects.

  5. A manufacturer selects suppliers using a weighted-score model. Supplier A scores 80 on quality (weight 0.5), 70 on delivery (weight 0.3), and 90 on cost (weight 0.2). What is the total weighted score?

    Answer: 79

    Score = (80×0.5) + (70×0.3) + (90×0.2) = 40 + 21 + 18 = 79.

  6. Which forecasting method is most appropriate when a time series exhibits both trend and seasonal components?

    Answer: Holt-Winters exponential smoothing

    Holt-Winters (triple exponential smoothing) explicitly models level, trend, and seasonal components simultaneously.

  7. In facility layout design, a product layout is most advantageous when which condition is met?

    Answer: High volume, low variety production

    Product (line) layouts are optimized for high-volume, standardized production where the sequence of operations is fixed.