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Author Question: When do normally open relay contacts close? A) They cannot close because they are open contacts. ... (Read 239 times)

s.tung

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When do normally open relay contacts close?
 
  A) They cannot close because they are open contacts.
  B) When the relay coil is energized
  C) When the relay coil is de-energized
  D) When they receive power

Question 2

What power source does a heater normally operate on?
 
  A) 300 V to 400 V B) 208 V to 240 V C) 150 V to 250 V D) 200 V to 240 V



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dpost18

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Answer to Question 1

B

Answer to Question 2

B




s.tung

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Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review


yeungji

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Reply 3 on: Yesterday
Excellent

 

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