What is the primary function of a variable frequency drive (VFD)?
A. To control the speed of an electric motor
B. To convert AC power to DC power
C. To measure voltage and current in an electrical system
D. To protect electrical equipment from power surges
Answer:A
What is the primary function of a variable frequency drive (VFD)?
A. To control the speed of an electric motor B. To convert AC power to DC power C. To measure voltage and current in an electrical system D. To protect electrical equipment from power surges
Explanation: VFDs are devices that are used to adjust the speed of an electric motor by varying the frequency of the power supplied to the motor. This allows for more precise control over the speed of the motor, which can improve efficiency and reduce energy consumption.