WorksheetsAC Drive Characteristics 1
Total questions: 10
Worksheet time: 4mins
An example of a Constant Torque load would be__________
An Electric Vehicle
A Mill or Lathe
A Fan
Conveyor Belt
Which of these best describes a Variable Torque load?
Jet Turbine Engine
Axial Piston Pump
Paper Rolling Machine
An S-Curve is typically programmed for high ___________ Loads.
Precision
Frequency
Horsepower
Inertial
The Boost Select parameter on the Powerflex 4 drive increases the _________ at low RPM.
Hertz per Torque Ratio
NP Voltage
Volts per Hertz Ratio
Volts per Amperage Ratio
When the drive is done Injecting DC voltage but the motor is still turning, the drive will_____________
Coast the motor to a stop
Ramp the motor to a stop
Continue applying DC voltage until the motor stops rotating
Dynamic brake the motor to a stop
Amperage ________ as the trainers AC motor increases in RPM.
Stays Constant
Increases
Switches Polarity
Decreases
A Constant Power load requires Torque to ________ as speed increases.
Remain Constant
Double
Increase
Decrease
When calculating the maximum frequency a 2-pole motor can run at, you take the rated frequency times ________
25%
10%
50%
150-200%
If you have an external button to start the drive and a button to stop the drive, you set the start source parameter to __________
2-Wire
3-Wire
2-Button
External Source
Operating an AC motor above base speed involves operating above the rated__________ on the NP data
Torque
Frequency
Voltage
Horsepower
