Answer / nishad

My question is Why Earthing is not required in Xformer
primary star point of Star / Star connection????

Answer / k.prakashchandra

Eatrthing primary neutral of star/star Tr at the receiving
end is of no use for protection and safety . At sending end
neutral is earthed and it is sufficient.

What are the advantages of star-delta starter with induction motor?

7 Answers   Merchant Navy, Naval Academy, Samundra Institute of Maritime Studies, YMCA,

---

How you calculating the 30 Hp 3 phase AC motor of power what size of cable is used for this motor?

0 Answers   Dhanam Enterprises,

---

I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.

0 Answers  

---

what is working parincipal of a ht transformer

0 Answers   Pidilite,

---

What is signal flow graph?

0 Answers  

---

---

What, in the construction of a transformer, controls KVA? For example 600/208/120 V transformer can be 10kVA or 45kVA!!! What do we change in the construction of a Transformer in order to change the rating but not the voltage.

1 Answers  

---

Hoe to calculate body earthing conductor size ?

1 Answers   IES,

---

WHY STABILIZER SHOULD USED

2 Answers  

---

what is ups?how its works?and what is there in static switch how it works?

2 Answers   Bhel,

---

what is the reason for using 110 volt and 60 hertz ac supply for using power distribution in America?

2 Answers   Electro Tech,

---

what is the significance of cabability curve of alternator

0 Answers  

---

what are the advantages and disadvantages of oil filled cables over XLPE cables

3 Answers   Areva, AUVA,

---