Answer Posted / rakesh patel

we maintain the frequency of the transformer is constant because if we change the frequency,eddy current loss and hysteresis loss are also be change with respect to frequency. and due to losses, it is directly affects the efficiency of the transformer.that is why we have to maintain the frequency constant.

What is the minimum value of hfe for the oscillations in transistorized rc phase shift oscillator?

1191

---

what will be the min and max voltage flow from neutral to earth?

1466

---

can i connect wavetrap in 2 different phase in EHV line?

1779

---

what is the meaning of the symbol << >> put in transformer drawing

1893

---

what are the available sizes of pin type terminal lugs in the market today?

1794

---

1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)

2207

---

How many methods use the load flow solution?

1269

---

what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

2272

---

Is there any relevant technique to produce power from light and heat energy of the sun simultaneosly from same rays of light?

1822

---

State the formula for overall efficiency of thermal power station

2981

---

If I have 3 essential main switch board and 3 incoming electricity ,but only 1 genset running is that possible.

1572

---

What is the criteria for selecting the voltage classes of an AC Induction Motor.The KW rating above/below which ht/lt selection is made may be provided in details.

1599

---

How to calculate the Harmonics losses in terms of cost/unit.

1962

---

What is cross over distortion? How it can be eliminated?

1220

---

List of equipments required foe industrial repair lab.

1849

---