When the switch is set in the hand position, contacts 1 and 2 are closed, and contacts 3 and 4 are ____.
a. in auto position
b. open
c. disconnected
d. also closed
b. open
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Figure 41-02
In the accompanying figure, because control relay CR is used as a(n) ____________________, it must be permitted to remain energized when either or both of the motor starters are not energized.
Fill in the blank(s) with the appropriate word(s).
Types of fault current include overloads, short circuits, ground faults, and _____.
a. arc faults b. symmetrical faults c. asymmetric faults d. transient faults
Describe the typical Australian crossbreeding system
What will be an ideal response?
Means of access onto a scaffold include a hook-on or attachable ladder, a ramp, or a(n) ____ and are determined by the competent person on the job.
a.stair tower b.stack of concrete blocks c.adjacent scaffold d.earthen mound