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Author Question: Variable frequency drives (VFD) reduce the speed of AC motors by: A) Controlling the frequency ... (Read 90 times)

codyclark

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on: Jul 26, 2018
Variable frequency drives (VFD) reduce the speed of AC motors by:
 
  A) Controlling the frequency (Hz) of the power to the motor.
  B) Applying an adjustable magnetic brake to the motor.
  C) Controlling the voltage available to the motor, like a light dimmer.
  D) Limiting the current to the motor.

Question 2

In a firm, fixed price contract, the contractors profit is _____.
 
  a. subject to penalties and incentives
  b. incorporated into the bid
  c. negotiated separately from labor and material costs
  d. tied to project schedule performance


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javimendoza7

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Reply #1 on: Jul 26, 2018
Answer to Question 1

A

Answer to Question 2

b


codyclark

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Reply #2 on: Jul 26, 2018
Thanks


javimendoza7

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Reply #3 on: Jul 26, 2018
Welcome :)


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