Answer Posted / uttam lal

to reduce the core losses in transformer. core loss is the sum of hystersis and eddy current loss

I am B.E.electrical engineer having 7 years of experience in Transformer testing upto 315 MVA.I want to khow how I can get the 'Electrical Valuer' License.

2146

---

Initially, when the input is not equal to the output — what type of response is this?

1101

---

How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...

2044

---

what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct

1911

---

Can we use shunt trip coil instead of trip coil with protection relay for protection?

1781

---

If there are two transformer having rating of 2.5mva, 6.6kv/440v(satr-star),and the load is 600kw then what is better to maintain less losses in transformer having both transformer in parellel or only single transformer connected to load? Please give calculated answer

2766

---

I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

1980

---

Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

1146

---

hi friend i am going too attend for hpcl in this month please help me by sending written test question papers i am in the stream of E.E.E

2019

---

What is transformation ratio what it describes?

1763

---

What is the difference between DOL starter and star delta starter

1167

---

Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

2399

---

EXPLIAN THE IMPORTANCE OF POLY PHASE CIRCUIT.

2225

---

why servomotor motor? where i apply for best output?

2084

---

During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

1920

---