Some DC contactors contain two separate coils. Describe the two coils.
What will be an ideal response?
One is the holding coil and remains energized as long as power is applied to the contactor. The other coil is called the pick-up coil and is used to increase the magnetic field strength when the contactor is first energized.
You might also like to view...
What symbol is used to indicate ohms?
Figure
An exit staircase has an exterior door opening to a public street. Is it an exit, an exit access, or an exit discharge?
What will be an ideal response?
Pipe used in high-pressure and heavy structural applications ____.
A. must have 100% penetration over most of the joint B. does not require 100% penetration, although penetration must be uniform C. must have 100% root penetration over 100% of the joint D. does not require 100% root penetration but must cover 100% of the joint
If you had a tall, nearly leafless houseplant that was not attractive anymore, what two types of cuttings could you take to propagate more plants from it?
What will be an ideal response?