Practice Test Geeks(CPM) Certified Plant Manager Practice Test
← All CPM Flashcard Decks

MRP & Production Control Flashcards

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

Read the first 7 MRP & Production Control flashcards as text

  1. A Rough-Cut Capacity Plan (RCCP) differs from Capacity Requirements Planning (CRP) in that RCCP:

    Answer: Checks capacity at only key or critical resources against the MPS, before MRP is run

    RCCP is a quick check of critical resources against the MPS to validate feasibility before the detailed MRP explosion is performed.

  2. Which production scheduling approach sequences jobs to minimize the total time all jobs spend waiting and being processed (makespan)?

    Answer: Johnson's Rule

    Johnson's Rule is a scheduling algorithm that minimizes makespan for n jobs processed through two machines in sequence.

  3. In MRP II, what does the 'resource planning' module address that basic MRP does not?

    Answer: Long-range capacity planning including capital equipment and workforce needs

    Resource planning in MRP II provides long-range aggregate capacity planning covering equipment, facilities, and workforce over a multi-year horizon.

  4. What is the primary purpose of safety stock in an MRP environment?

    Answer: To buffer against demand variability and supply uncertainty so that net requirements are met even when inputs are unpredictable

    Safety stock protects service levels against variability in demand or replenishment lead times, acting as a buffer in the MRP inventory record.

  5. A planned order release in MRP becomes a 'firm planned order' when a planner:

    Answer: Manually freezes the order so the system will not automatically change it during re-planning

    A firm planned order is manually protected from automatic rescheduling, giving the planner control over a specific order during the re-planning process.

  6. Which dispatch rule prioritizes the job with the smallest ratio of time remaining to work remaining?

    Answer: Critical Ratio (CR)

    Critical Ratio = (Due date − Today) / (Remaining lead time); a ratio below 1.0 indicates the job is behind schedule and should be expedited.

  7. In production control, 'input/output control' is used primarily to:

    Answer: Monitor and regulate the flow of work into and out of work centers to control queue lengths

    Input/output control compares planned versus actual input and output at work centers so managers can adjust releases or capacity to maintain target queues.