Answer / rahul faye

A variable-frequency drive (VVVFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor. A variable frequency drive is a specific type of adjustable-speed drive. Variable-frequency drives are also known as adjustable-frequency drives (AFD), variable-speed drives (VSD), AC drives or inverter drives

Answer / saravananp

In Electrical:- VFD(Variable Frequency Drive). This is used to monitoring and controlling the speed of the driven based on the variation of frequency.

In Mechanical:- This is used to control the flow of air within the duct in terms of CFM(Cubic foot Metre).

what is control supply rating of a machine

0 Answers  

---

Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

0 Answers  

---

Is it possible to control the power in transmission lines by remote controlling method?? if yes explain in details???

1 Answers  

---

when the diameter of the core and cable is doubled, the value of capacitance ?

2 Answers  

---

what is meant by motor startup supervision & motor load jam protection ?

0 Answers   ABB,

---

---

what is the main function of lbb protection

3 Answers  

---

what is sevice settings for mccb?How can be it setted?

0 Answers  

---

what is the working and construction of generator

1 Answers  

---

How the electric train gets the supply of electricity? What is the return path of the current?

8 Answers   Siemens,

---

how caculate the pump head to maintain perticuler pressure of water and what would be the motor size in hp for the same?

1 Answers  

---

What are the application of Under voltage release?

2 Answers   Techno Electric and Engineering,

---

what is transistors comprised of?

0 Answers  

---