Answer / khrabsheh

Sensitive Earth Fault Protection Normally used on systems where the earth fault current is limited to a very low value (Neutral earthed through resistors, Peterson coil, reactance, etc) Scheme consists out of a ring CT (Core Balance CT) around the three phase conductors, and the relay connected to the secondary side of the CT. A very low setting is possible, even sometimes lower then 1% FLA. Need to coordinate with similar relays downstream.

what is servo motor & how does it work.

0 Answers  

---

hi Is there any possibilities to find out the rotation of a shaft or something else by using electromagnectic waves or by IR rays.If s then can v change the dir., of rotation of the same by remotely?& how? plz dn't any1 say "NO r CAN'T"

0 Answers  

---

What is the minimum underground tank size capacity considered for firefighting purpose?

0 Answers  

---

what happens if DG N earthing fails while running and N Earthing fails while Transformer on load ???what will be the impact ???????/

2 Answers  

---

What is a liquid resistance starter?where it is used??

15 Answers   Mecon,

---

---

Is it possible that Generator trip but Turbine not trip.Give explanation.

1 Answers   Essar,

---

If the soil resistivity is more large, how can we earthing our 11 k.v. transmission line?

2 Answers  

---

If current and resistance in a circuit is increased by 20%, what will happen to its voltage drop??

4 Answers  

---

in a induction motor if we put capacitor across it will the power factor of the motor will improve? if yes how

6 Answers   Reliance,

---

Write the current equation in series RLC circuits.

0 Answers   Agilent, Integreon, ZS Associates,

---

How calculate cable size & voltage drop for the following requirement connected load 150 KW distance cable length 1000 M voltage 3 phase 415 v.

1 Answers  

---

What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

0 Answers  

---