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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La tubería de hierro fundido generalmente se corta con un(a):
a. sierra alternante. b. soplete de corte. c. cortador de tubería de desagüe. d. sierra para metales.
If the velocity of air through an 8" x 20" duct is 700 fpm, how many cfm of air is being carried by the duct?
What will be an ideal response?
________ is the endogenous growth substance (hormone) that most commonly inhibits germination.
Fill in the blank(s) with the appropriate word(s).
A controlled environment:
A. One that is fully created to prevent definite hazardous conditions. B. Is a natural or induced environment that has been changed in some way to reduce or eliminate potential environmental hazards? C. One that is completely or almost completed shout off from the natural environment. D. One that does not interfere with the free movement of air.