Question 1

A ____ drive is a motor controller that controls the primary supply frequency of the electrical.

Accepted Answer

A) variable-frequency 
B) standard-frequency 
C) voltage 
D) electricity 
A) variable-frequency 
B) standard-frequency 
C) voltage 
D) electricity

Question 2

The principles that demonstrate the affect of motor speed on pump and fan flow, pressure, and horsepower are defined by the _______________ laws.

Accepted Answer

The answer of The principles that demonstrate the affect of...

Question 3

The stage of the VFD that converts the AC input power to DC power is called the ____.

Accepted Answer

A) inverter 
B) dc bus 
C) rectifier 
D) regulator 
A) inverter 
B) dc bus 
C) rectifier 
D) regulator

Question 4

Only ____-phase motors are suitable for use with VFDs.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

A ____ drive is a motor controller that controls the primary supply frequency of the electrical.

The principles that demonstrate the affect of motor speed on pump and fan flow, pressure, and horsepower are defined by the _______________ laws.