Explain what a substation is and why it is important to the grid
What will be an ideal response?
The substation is a group of transformers used to step up the voltage at the generating station where voltage is put into the system. At the end where voltage is used, a substation is used to drop voltage to a usable level where it is moved around town. The voltage may come through one more substation at an industrial site.
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The only difference in how a three-wire sourcing and sinking sensor is connected is the polarity of the external power supply to which its load is wired.
Answer the following statement true (T) or false (F)
As a substitute for the wage-incentive system, slaveowners most often used the
A. promise of eventual freedom. B. reward of some legal rights. C. the promise to slaves of a grant of private property to do tenant farming after a period of years of bondage. D. whip as a motivator. E. threat of death.
The parking brake switch is in a circuit that illuminates a(an) ________ colored light in the instrument cluster
A) Amber B) Green C) Red D) None of these
As with objects and features, the associations between components and subassemblies are often called ____ relationships.
A. parent-child B. instantiated C. sibling D. permanent