Answer Posted / g.kiran kumar

for seperatly execited machines an external d.c source is
required to exicte the field coils to emmit the flux.where
in case of self exicted an induced emf induced by the
armature is supply to the field coils.(THERE MUST EXIST
RESIDUEL FLUX IS PRESENT IN FIELD WINDINGS FOR SELF EXICTED
MACHINES)

What is the Current equation in series RLC circuits.

992

---

Which level of the Transformer oil got dielectric strengh? And why?

2186

---

Why mostly the HV side of transformer has Delta?

3160

---

why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.

1925

---

IN dc capacitive reactance is??

1345

---

11 kv input, 66 kv input advantages

1340

---

what is rocking arrangement in arc heating

2074

---

How we can calculate the life of Lead acid battery

1717

---

please explain how to do 'pole drop test' on generator?

2851

---

i've iocl interview.. if you know the interview process please give me information..

1932

---

what is through fault?

2211

---

What is the relationship between voltage,current & frequency?

1713

---

A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1956

---

When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?

1849

---

what is the relation between size of the anteena and wavelenghth of radiated wave

2125

---