Answer / peter hone

Field loss is where field winding loses its residual
magnetism and can not operate. The process to reinstate the
magnetism is to flash the field...by flashing a small
battery across the field winding momentarily to regain the
magnetism...
Have done this on many occasions...it works!

Why earthing is required, and what effect in earthing result is more than 5 ohm and less than 5 or equal to 0 ohm

2 Answers  

---

our industries ht line so power fluctation(once drop of power please rectify causes

0 Answers  

---

what is diff kav & kvarh?

3 Answers  

---

What are the transformer losses?

0 Answers  

---

State thevenintheorem?

0 Answers  

---

---

why cable i burning without tripping. how can protect led street lights

0 Answers   Cosma,

---

what will happen if any motor runs long time with star connection in400vA.C. system

5 Answers  

---

what is the function of turbo charger in disel generators

1 Answers   Kirloskar,

---

what is recovery voltage & transient voltage ?

1 Answers   Bhel,

---

lorteny method

0 Answers  

---

how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

0 Answers   Cadsys,

---

How the field flux is controlled in DC drive ?

4 Answers   TATA,

---