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Author Question: Steel core is used in electromagnets that have AC voltage applied to them because ________. A) ... (Read 25 times)

Ebrown

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on: Jul 27, 2018
Steel core is used in electromagnets that have AC voltage applied to them because ________.
 
  A) laminated steel allows the magnetic field to build and collapse quickly
  B) laminated steel is more economical to use than soft iron
  C) laminated steel is easily formed to any shape, which makes it more usable in complex components

Question 2

What is the advantage of using multiple compressors on a supermarket rack system?
 
  A) The compressors can operate at a higher compression ratio as a parallel group.
  B) Using multiple parallel compressors makes the use of multiple refrigerants possible.
  C) Extra compressors provide backup in case one quits working.
  D) System capacity can match refrigeration loads, which vary over a wide range.


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otokexnaru

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Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

D


Ebrown

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Reply #2 on: Jul 27, 2018
TY


otokexnaru

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Reply #3 on: Jul 27, 2018
You're welcome


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