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【Daily Topic】【Electrical Edition 20170321】

2017-03-21View Original

Thread Content

Participation reward: 2 Wealth. Correct reward: 8 wealth. Multiple-choice question: The condition under which the armature in an electromagnetic mechanism is held firmly in place is ( ). A. The electromagnetic attraction is greater than the spring force. B. The electromagnetic attraction is equal to the spring force. C. The electromagnetic attraction is less than the spring force. A
Reply #22017-03-21
The condition for the armature in an electromagnetic mechanism to be reliably attracted is (A) A. The electromagnetic attraction force is greater than the spring reaction force; B. The electromagnetic attraction force is equal to the spring reaction force; C. The electromagnetic attraction force is less than the spring reaction force
Reply #32017-03-21
A: The electromagnetic attraction is greater than the spring reaction force
Reply #42017-03-21
A: The electromagnetic attraction is greater than the spring reaction force

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