0 of 20 questions completed
VFD Automation Quiz
- 20 Questions (Selected Randomly)
- 20 Marks (1 Mark/Question)
- 25 Minutes of Time
All The Best!
You must specify a text.
You must specify a text.
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 20 questions answered correctly
Time has elapsed
You have reached 0 of 0 points, (0)
Thanks for your participation!
You can discuss any questions or concepts related to this topic in our PLC SCADA automation group on Facebook.
Question 1 of 20
What does VFD stand for?
Question 2 of 20
What type of Electric Motor can be used with a VFD?
Question 3 of 20
Which section of a VFD converts incoming AC Power to DC Voltage?
Question 4 of 20
What are the types of VFD?
Question 5 of 20
Why Variable Frequency Drive (VFD) is connected to Electric Motors?
Question 6 of 20
If a single VFD operated 3 motors, which of the following must be remembered?
Question 7 of 20
An embedded ….. conduct the overall operation of the VFD controller.
Question 8 of 20
The main microprocessor programming is in ….. that is inaccessible to the VFD user.
Question 9 of 20
The setting for the speed of VFD is known as …..
Question 10 of 20
Which parts of a VFD is to change DC voltage into the pulse AC voltage?
Question 11 of 20
The VFD controller is consisting of different sub-systems:
Question 12 of 20
Insulated-Gate Bipolar Transistor (IGBT) is found in which part of drives?
Question 13 of 20
A fan using the VFD is described as Close Loop control arrangement, Which of the following must always be programmed in the VFD?
Question 14 of 20
On the closed-loop system using the VFD, the output starts to oscillate between the minimum and maximum speed. Which of the following might correct the problems?
Question 15 of 20
Which of the following control arrangement are identified by the one VFD sending a 4-20mA signal out its analog output (AO) to the analog input (AI) of other VFD?
Question 16 of 20
Bank of large capacitors are the most prominent in which of the following part of a drive?
Question 17 of 20
What types of application curve must be used inside the VFD to operate these cooling tower fan correctly?
Question 18 of 20
Suppose, 480Vac is incoming power to the VFD, which of the following is expected voltage at the DC link?
Question 19 of 20
The three VFDs are operating through serial communication with the local area DDC controller. How many wire connections are required on VFD for serial communications?
Question 20 of 20
If the RS-485 connection is wired between the VFD and DDC controller, this control arrangement is known as which of the following: