Chapter 4


	*4.1.1* What is the definition of power factor? What is the best power factor for a machine shop? What are the symptoms of a shop having a terrible power factor?

	*4.1.2* *Sketch a one-cycle picture of the following voltages found on a machine tool.* *a.)* *AC100* *b.)* *R Phase* *c.)* *S Phase* *d.)* *T Phase* *e.)* *What is the instantaneous voltage sum of R, S and T?*

	*4.5.1* *Sketch a picture of three switch contacts in:* *a.)* *Series* *b.)* *Parallel* *c.)* *Which circuit can monitor three alarm contacts on one signal line?*


	*4.5.2* *Sketch a picture of three 1 Ohm resistors in:* *a.)* *Series, then find the equivalent resistance.* *b.)* *Parallel, then find the equivalent resistance.*


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