To Limit Current Chopping in Vacuum Circuit Breakers, the Contact

question 2

Multiple Choice

To limit current chopping in vacuum circuit breakers, the contact material employed should have the properties of

• A)Low conductivity and high vapour pressure.
• B)Low conductivity and low vapour pressure.
• C)High conductivity and high vapour pressure.
• D)High conductivity and low vapour pressure.

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Definitions:

Dred Scott v. Sandford

An 1857 Supreme Court case that ruled African Americans, whether enslaved or free, could not be American citizens and thereby had no standing to sue in federal court.

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Popular Democratic

Referring to a political ideology or movement that blends elements of democracy with a strong appeal to the general populace, focusing on the needs and desires of the common people.

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A legal principle that allows courts to determine the constitutionality of legislative and executive acts.