Variable frequency drives (VFD) reduce the speed of AC motors by: ...

[codyclark]

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

[javimendoza7]

Answer to Question 1

A

Answer to Question 2

b

[codyclark]

Thanks

[javimendoza7]

Welcome