In a DC contactor, what provisions help to minimize heavy arcing that burns the contacts?

What will be an ideal response?


To minimize heavy arcing that burns the contacts, a DC contactor usually is equipped with a blowout coil and an arc chute.

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One disadvantage of using canola oil as an engine lubricant is that it is not biodegradable

Indicate whether the statement is true or false

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The exact description of each lighting fixture is given on the ____________.

Fill in the blank(s) with the appropriate word(s).

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When using weave beads in flat open-root V-groove welds, use a _____

a. 10- to 15-degree drag angle b. 15- to 20-degree drag angle c. 10- to 15-degree push angle d. 35- to 40-degree push angle

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In which type of wireless attack is an AP's MAC address spoofed?

A. Trojan horse B. brute-force password C. denial-of-service D. man-in-the-middle

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