Answer / brahma reddy

the power exp for syn. gen due to saliency is

P= (EV/Xd)sin& + v2/2[1/Xd-1/Xq]sin2&

the term after + is called reluctance power that
means eventhough gen not starts it will posses some power
due its reluctance
due to this in syn gen powrer is saliency

why is the vector group analysis done in transformer tests

28 Answers   K K Rao, Lloyds, Nicco Engineering Services Limited, Qatar Petroleums,

---

How to run 1ph motor(230 VOLTS its full load amps is 4.5 ampa))with 480 volts main(we didn hav neutral)Thn we go for step down transformer.Our load 10 amps,so we conisder this amps in primary are secondary side?

1 Answers  

---

What is restricted earth fault protection ?

1 Answers  

---

What is the function of wave trap in an electrical substation?

2 Answers  

---

why needtwo winding LV and HV in transformer?

1 Answers   Organic Industries,

---

Why TAP changer provided in primary side of HT transformer ? and why not in secondary?

9 Answers   ABB, Reliance,

---

What are the tests to be taken on a transformer and generator?

12 Answers   Honeywell,

---

Why a transformer Noise during its running condition ?

8 Answers   NTPC,

---

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

0 Answers   DAE,

---

What is the constructional difference between ceiling fan and table fan

2 Answers  

---

What is the dependency of stiffness on load angle??

0 Answers  

---

what is the difference between 3 phase 3wire &3phase 4 wire meter?what is the advantage of 3p3w over 3p4w?

1 Answers   L&T, MahaDiscom,

---