at what condition restricted earth fault relay will act?

1 Answers   Equate,

---

how to select electronic timer(Star-Delta) setting for diff. rating motors

0 Answers   Getrag Ford Transmissions,

---

Is there is any hazard to insulation of 3hp motor 5 KV megger is used for it?

1 Answers  

---

In HI POT test what is reason for applying the AC VOLTS and DC VOLTS in different applications what is the nessesity for this ?

0 Answers  

---

What is bus-bar?

1 Answers  

---

why does in transformer the v/f ratio constant?

2 Answers   TATA,

---

What is mathematical model of a control system?

0 Answers  

---

what is brushless generator.How does work it..??

3 Answers   NTPC,

---

1. for eg, capacitor is used for many purposes(it act as filter, oscillator, bypass capacitor, memory storage etc...) 2. Please tell me some example circuits for different uses of capacitor( whenever and whereever and however we used capacitor as a filter, oscillator tuning etc..) 3. similarly for inductor and resistors(it act as what?) and when and how we want to act as like that?, and how we can used these components depends upon our requirments with example circuits and explanation? design to act as these components depends

0 Answers  

---

I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

2 Answers  

---

what is the maintaining Cf in UPS.

0 Answers   Enercon,

---

why we do not switched on capicitor panel with DG Supply

3 Answers   DLF,

---