The Problem: sTEm puzzle #39
Analysis
sTEm puzzle #39 provides
an opportunity to present the characteristics of single and double stage pumps.
Two stage pumps will bring the pressure to a lower value than a single stage
pump. The data below provides the summary of each pump's performance. The
graphic indicates that the two stage pump does not "pump" a vacuum as
low as the single stage pump can accomplish. One reason for this inconsistency
is that the plots are indeed mislabeled.
Solution
Does the technician suspect that the performance data recorded
below is missed labeled. YES
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