Q.1
What should be the minimum value of PCR Cp for a six-sigma company?
  • a) 2.0
  • b) 1.0
  • c) 3.0
  • d) 1.3
Q.2
What should be the position of the process mean for the calculation of the PCR Cp?
  • a) Near to the USL
  • b) Near to LSL
  • c) Centered between LSL and USL
  • d) Cp Does not take this into account
Q.3
What is the function of Cp?
  • a) To measure the value of process mean
  • b) To measure the value of the process standard deviation
  • c) To measure the USL and LSL of the quality characteristic
  • d) To measure the spread of the specifications relative to the six sigma spread
Q.4
Which one of the processes performs the best?
  • a) The one which operates near the USL
  • b) The one which operates near the LSL
  • c) The one which operates at the midpoint of the interval between the specifications
  • d) The one which operates outside the specifications
Q.5
4 processes have same value of Cp and the USL and LSL values equal toandrespectively. Which one of those performs the best?
  • a) Centered at 50
  • b) Centered at 44
  • c) Centered at 54
  • d) Centered at 63
Q.6
If Cp=Cpk which of these is true?
  • a) Process is centered at the LSL of the specifications
  • b) Process is centered at the USL of the specifications
  • c) Process is centered at the midpoint of the specification
  • d) Process is centered at the outside the specification limits
Q.7
Which of these gives the best performance of the process?
  • a) Cp = Cpk
  • b) Cp – Cpk = Cpk
  • c) Cp > Cpk
  • d) Cp < Cpk
Q.8
Which of these is correct?
  • a) Cpk=min⁡(Cpu, Cp)
  • b) Cpk=min⁡(Cpu, Cpl)
  • c) Cpk=max⁡(Cpu, Cp)
  • d) Cpk=max⁡(Cp, Cpl)
Q.9
Which of these is a correct definition for the Cpk?
  • a) Cpk is the one sided PCR for the specification limit nearest to the standard deviation of the process
  • b) Cpk is the one sided PCR for the specification limit farest to the standard deviation of the process
  • c) Cpk is the one sided PCR for the specification limit farest to the average of the process
  • d) Cpk is the one sided PCR for the specification limit nearest to the average of the process
Q.10
If Cp>Cpk what conclusion can be carried out about the process?
  • a) The process has its operation at the midpoint of the interval between the specifications
  • b) The process operates off-center
  • c) The process performance is the best possible for that Cp
  • d) The process can’t perform any better for same Cp
Q.11
For a process, the upper specification limit and lower specification limits areandrespectively. If the process has its mean equal toand its standard deviationwhat is the value of Cpk for this process?
  • a) 1.7
  • b) 2.5
  • c) 1.0
  • d) 1.5
Q.12
If Cp=2.0,Cpu=1.5,Cpl=2.5 what will be the value of Cpk?
  • a) 2.5
  • b) 2.0
  • c) 1.5
  • d) 0
Q.13
If Cpk=1.0 and Cp=2.what will be the actual fallout for the process in ppm?
  • a) 200
  • b) 2700
  • c) 1
  • d) 1350
Q.14
Cpk measures the maximum of the two, Cpu and Cpl.
  • a) True
  • b) False
Q.15
For the calculation of Cpk the quality characteristic should have a lognormal distribution.
  • a) True
  • b) False
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