Answer / gurbaj

speed get reduced, as E=V-Ir and E=K*SPEED*FIELD
speed= V-Ir/K*FLUX

CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D

0 Answers  

---

what is inrush curent.

5 Answers   BARC,

---

Why electrical engineer use Cu Strip for transformer neutral why not GI Strip? What if we use GI instead of Cu does it affects the transformer performance.

7 Answers  

---

1.how many earth pits are required for 1000 k.w plant include substion , transformer ? 2. how many earth pits are required for 500kva generator.what is formula to calcute?

0 Answers  

---

Transformer calculation

1 Answers   Aramco, LMW Lakshmi Machine Works Limited,

---

---

What is the purpose of REACTOR in GIS substation?

1 Answers  

---

What is the acessaries distribution transformer ?

11 Answers   Bhel,

---

what is differents between static stablizer and servo stablizer

3 Answers  

---

What are Directly Exited Generators?

2 Answers  

---

ther is any difference if we use 240 V A.C,50 Hz,1 Ph. in place of 230 V A.C,50 Hz,1 Ph.

4 Answers  

---

I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase, before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

---

How we check vector group for a Dyn1 transformer?

6 Answers  

---