Answer / kj

These are both used on a DG.

The short circuit maintenance CT is used to keep the output
voltage and current high enough to clear a fault by
tripping an overcurrent device (circuit breaker).

The droop CT is used to cause the voltage to decrease as
the kvar load rises. This is used to help DG's share the
kvar load.

How to write a progrramme to turn ON and turn OFF a motor with a single push button in AB?

2 Answers   HCL, Torrent Pharma,

---

Why the capacitor are connected in Delta(Three Phase) for power factor improvement ?

5 Answers   Hero Honda,

---

Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.

0 Answers   NHPC,

---

directional relay is typically used to respond in fault condition who it can be used just as reverse power protection which purely senes direction reversal to operate a circuit breaker?

1 Answers  

---

What is the function of the generator exciter?

0 Answers  

---

---

the single phase voltage is 230 volts and threee phase is 430 v.why three phase is not 660 v?

2 Answers  

---

Why current transformers are rated in BURDEN instead of VA?

4 Answers   Bhel,

---

either water sensor or flow meter,how we observe the water level, f any other equipment are in market ?

0 Answers  

---

in Megger what type of voltage(AC or DC) are produce.how they work.

1 Answers  

---

how to match 0 -10V with 4 - 20mA

3 Answers  

---

generally rectifying of ac tells. ac signel appear at phase and neutral with respect to frequency by -veand +cycles. but we doesn't experience shock with neutral in house hold ac??????.

1 Answers   ETA, RRR, TCS,

---

Explain using drawings what is reverse PID action w.r.t PID controllers.

0 Answers   L&T,

---