What is the fault or needs to be done when frequency in ac drives is not changing?

0 Answers  

---

what is relation between vector group of transformer and its load hormonics?

1 Answers   Sanmar,

---

how to size H.T & L.T Panel ?

0 Answers   Schneider,

---

HOW TO CALCULATE THE CAPACITOR RANGE FOR LOAD FOR PF IMPROVEMENT? EXPLE:FOR 65 HP LOAD HOW TO CALCULATE CAPACITOR RANGE?

12 Answers   Al-Malik, All Star Electric, GEC, Reliance, Universal Industries,

---

How can we have to decided motor connection as a STAR-DELTA or DELTA-STAR?

3 Answers   IOCL, Jindal,

---

where does 22kv line starts

0 Answers   Eskom,

---

the resstance of a thermistor is 5000 ohm at 25degreeC and coefficient is .04/degCel. A measurement with lead resitance of 10 ohm will cause an error of

1 Answers   GATE,

---

why middle phase should used for earth fault and other phases used for over current in overcurrent and earth fault relay?

7 Answers   ABB, ONGC,

---

why do select 11000v rubber mat even we use only 415Volts

1 Answers   Saint Gobain, Tata Steel Limited,

---

why can we use cosine wave instead of sine in ac supply as both have same rms vale and ripple factor

0 Answers   Indcoil Transformers, Power Grid,

---

What is the effect of positive feedback on the stability of the systems?

0 Answers  

---

why any inductive load need free wheeling diode?

4 Answers   Essar,

---