a) Quality of insulation on electrical cable is controlled by checking the numbe

Question

a) Quality of insulation on electrical cable is controlled by checking the number of pinholes per foot of cable.

If cable size varies in width, i.e., one chart is used for several cable sizes, the control chart to use:

1. X-bar chart

2. R-chart

3. P-chart

4. C-chart

5. U-chart

b) A process that produces fuses is controlled by finding the proportion defective fuses in each sample (of about 100 units) at regular time intervals.

The type of control chart appropriate for this situation is:

1. X-bar chart

2. R-chart

3. P-chart

4. C-chart

5. U-chart

Explanation / Answer

B ANS ) A U chart plots the number of defects per unit. It is possible for a unit to have one or more defects but still be acceptable in function and performance.basic definition

so option is 5

Aans ) by basic definition of p chart

ans pchart

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