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Question: this class is manufacturing systems and could use some help...

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This class is Manufacturing Systems and could use some help. Thanks!

1. Two workers with similar skills operate two identical machines (the same brand, model, and year of manufacture). They make the same product. You as a quality engineer measure the accuracy of dimensions (how much is the average different from the base value) and precision (what is the range of measured dimensions). What is the most probable finding when the results from these two machines are compared?

a.

Both precision and accuracy will be identical

b.

Precision must be the same, while accuracy must be different

c.

Precision will most likely be different

d.

Precision will most likely be identical

2. In Taguchi’s experiments, what is used as a criterion to decide whether or not an input parameter has a strong influence on the output?

a.

Higher levels of factors

b.

Higher statistical significance

c.

None listed here

d.

Higher levels of variables

e.

Higher signal-to-noise ratio

3. Imagine two manufacturing processes (machines) which make the same part, one being four sigma capable and the other one six sigma capable. You compare their control charts and the following holds for their control limits:

a.

More information is needed to guess what is the difference in control limits between these two processes

b.

Four sigma capable process have narrower range of control limits (UCLLCL)

c.

Six sigma capable process have narrower range of control limits (UCLLCL)

d.

UCLLCL depends more on what is the process average in particular case than on the process capability

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