Answer / guest

since V/f is constant hence flux will remain constant.

Answer / prateekd

if v/f ratio does not remain constant then there is increase
in air gap flux which will get machine saturated.

Answer / satyadeo vyas

https://www.quora.com/Why-is-the-VF-ratio-kept-constant-in-the-VFD/answer/Satyadeo-Vyas-1?ch=10&share=f1386f09&srid=CMgSL

What is the significance of 3.5 core cable ????

8 Answers   Intelux Electronics,

---

we have taken HV test of 2.5 k and Megger test on 11 kv HT cable.here it shows no fault but when we are charging the same cable with 11 kv supply why the VCB 11 kv gets tripped can anybody define the possible cause of fault ?

4 Answers   MAHINDRA,

---

what is principle of DC machines?

5 Answers   APTransco, NTPC, Wipro,

---

hi i will D.E.E.E.is completed pls send rrb diploma old qustion papaer sent in my e mail. i.d.

0 Answers   IIT,

---

what are the particle used along with silica gel in transformer breether,explain their functions.

4 Answers   ME, Oil India,

---

For Bus duct hi pot test, where we want to connect the return and ground leads?

2 Answers  

---

what is dc transformer? how it work?

15 Answers  

---

how the speed of the gets motor regulated. does it draw the same current on the all speed level.

0 Answers   Danko,

---

Why sip ring used in ac motor also why its not used in dc motor?

2 Answers   RRB,

---

i have one transformer 1000kva, 11/.433kv. we are using 200/5 amp. ct unit for measuring purpose, & one 800 amp. V.C.B Unit for the same t/f operate, i wants to known the primary current of T/F is only 53 amp. why we used 800 amp. V.C.B ? & 200/5 amp. CT Unit.

4 Answers  

---

how to electrically make connection to ferroli GN2N?

0 Answers  

---

The ohm is the unit of:(a) Charge(b) Resistance(c) Power(d) Current

2 Answers  

---