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Control:11 Questions

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1. What is not a primary objective of SPC? *

Center the process Determine changes in the process behavior Monitor process in real time Eliminate common causes of variation

3. What control chart is used when the sample size is between 4-10 per sub-group? *

X-MR chart Xbar-R chart Xbar-S chart Median Chart

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2. What is not a concept directly related to SPC *

SPC is developed by Walter Shewmart Every process has variation Variation is due to common and assignable causes Use varying types of Control Charts

4. What control chart plots individual data points and the moving ranges? *

X-MR chart Xbar-R chart Xbar-S chart Median Chart

5. What control chart plots the defects per unit? *

p chart np chart c chart u chart

7. What is not a good rational sub-grouping practice? *

Use large sample size when using discrete data Use many sub groups with small sub group size Keep items within a sub-group homogeneous Keep items between sub-group heterogeneous

9. Which among the following is not part of the 8 pillars of TPM? *

Make operators responsible for equipment maintenance Schedule maintenance based on historical failure rates EHS dept. ensures the health and safety of operators Apply error or failure detection systems in equipment

6. What control chart plots the count of defects? *

p chart np chart c chart u chart

8. Which among the following are not part of the statistical indicators of process changes in SPC? *

3 points in a row on the same side of the mean 4 of 5 points more than 2 sigma from the mean 6 points in a row all increasing or all decreasing 15 points in a row within 1 sigma from the mean

10. What is not among the 6 big losses that TPM intends to eliminate? *

Slow Downs Rework Breakdowns Fatigue

11. What factor is not considered in computing for Overall Equipment Effectiveness (OEE)? *

Availability Productivity Quality Security

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