Answer / chandresh aghera

the working principle of 3 phase recti is to provide high d.c.
current in rolling millls to rolling material.with hot or cold
rolling.

if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please

0 Answers   Bhel,

---

What are the advantages of autotransformer?

0 Answers  

---

Why voltages are 11kv 33kv why not others?

2 Answers  

---

what is difference between isolation and ultra isolation transformer?, what is the method of testing ?

0 Answers  

---

How do you think they do earthing or grounding in ships and aeroplanes?

9 Answers  

---

what is the difference between the megger and multimeter operation ?

3 Answers  

---

What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)

0 Answers   Great Eastern Energy Corporation Ltd,

---

assume we are put both df/dt and vector surge relay in same bus the df/dt relay setting is +5 hz an -5HZ. we want operat the vector surge relay before the df/dt how i calculate the setting of the vector surge relay.

1 Answers  

---

state working of halogen lamp?

0 Answers  

---

Why oil preferred over the air as a cooling medium for high rated transformer?

1 Answers  

---

Please clarify 1. Icw: rated short circuit working withstand capacity 2. Icu: Rated ultimate breaking capacity 3. Ics: Rated service short circut withstand capacity 4. other specification of ACB

0 Answers  

---

1.where in India the maximum transmission voltage is operated? 2.what the methods are used to cool down the transformer?give the specific ratings of the transformer & specific cooling process. 3.how zero & negative sequence reactances are formed in a rotating machine when fault occur in the system?

2 Answers   IES,

---