EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780176919962
Author: Herman
Publisher: VST
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Textbook Question
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Chapter 25, Problem 1RQ

Refer to Figure 25–1 to answer the following questions.

When switch HOA SW 122 is in the OFF position, which contacts have connection between them?

Expert Solution & Answer
Check Mark
To determine

The contacts that have connection between them when the switch is in off position.

Explanation of Solution

Refer to the table for the HOA SW 122. The X shows that for the connection between the two contacts the O indicates that there is no connection between the two contacts.

The case when the switch HOA SW 122 is in the off state, the contact 12 and 56 are connected thus the contacts 12 and the 56 have the connection in between when the switch HOA SW 122 is in off state.

Thus, the contact that have connection between them is 12and 56.

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