Explore topic-wise MCQs in Statistical Quality Control.

This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Statistical Quality Control knowledge and support exam preparation. Choose a topic below to get started.

1.

For the calculation of Cpk the quality characteristic should have a lognormal distribution.

A. True
B. False
Answer» C.
Discussion
2.

Cpk measures the maximum of the two, Cpu and Cpl.

A. True
B. False
Answer» C.
Discussion
3.

If Cpk=1.0 and Cp=2.0, what will be the actual fallout for the process in ppm?

A. 200
B. 2700
C. 1
D. 1350
Answer» E.
Discussion
4.

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
Answer» D. 0
Discussion
5.

For a process, the upper specification limit and lower specification limits are 62 and 38 respectively. If the process has its mean equal to 53, and its standard deviation 2, what is the value of Cpk for this process?

A. 1.7
B. 2.5
C. 1.0
D. 1.5
Answer» E.
Discussion
6.

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 C<sub>p</sub>
D. The process can t perform any better for same C<sub>p</sub>
Answer» C. The process performance is the best possible for that C<sub>p</sub>
Discussion
7.

Which of these is a correct definition for the Cpk?

A. C<sub>pk</sub> is the one sided PCR for the specification limit nearest to the standard deviation of the process
B. C<sub>pk</sub> is the one sided PCR for the specification limit farest to the standard deviation of the process
C. C<sub>pk</sub> is the one sided PCR for the specification limit farest to the average of the process
D. C<sub>pk</sub> is the one sided PCR for the specification limit nearest to the average of the process
Answer» B. C<sub>pk</sub> is the one sided PCR for the specification limit farest to the standard deviation of the process
Discussion
8.

Which of these gives the best performance of the process?

A. C<sub>p</sub> = C<sub>pk</sub>
B. C<sub>p</sub> C<sub>pk</sub> = C<sub>pk</sub>
C. C<sub>p</sub> &gt; C<sub>pk</sub>
D. C<sub>p</sub> &lt; C<sub>pk</sub>
Answer» B. C<sub>p</sub> C<sub>pk</sub> = C<sub>pk</sub>
Discussion
9.

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
Answer» D. Process is centered at the outside the specification limits
Discussion
10.

4 processes have same value of Cp and the USL and LSL values equal to 62 and 38 respectively. Which one of those performs the best?

A. Centered at 50
B. Centered at 44
C. Centered at 54
D. Centered at 63
Answer» B. Centered at 44
Discussion
11.

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
Answer» D. The one which operates outside the specifications
Discussion
12.

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
Answer» E.
Discussion
13.

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. C<sub>p</sub> Does not take this into account
Answer» E.
Discussion
14.

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
Answer» B. 1.0
Discussion