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Author Question: When do normally open relay contacts close? A) They cannot close because they are open contacts. ... (Read 201 times)

s.tung

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on: Jul 24, 2018
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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Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

B


s.tung

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Reply 2 on: Jul 24, 2018
Excellent

kilada

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Reply 3 on: Yesterday
Gracias!

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