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).

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Types of fault current include overloads, short circuits, ground faults, and _____.

a. arc faults b. symmetrical faults c. asymmetric faults d. transient faults

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Describe the typical Australian crossbreeding system

What will be an ideal response?

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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

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