Answer Posted / rk

we are maintaing the power factor between 0.95 to 0.98.
the most economical power factor is 0.96.
if your pf is below 0.9, electrical board authorities will
impose a penalty.

Is there any type of starter for DC motor other than two point,Three point and Four point starters?

1979

---

Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

1701

---

we can run 2phase as 3phase .what will be the differnce with respect to phase angle, power, current between the two modes

2097

---

i have total 8 dg sets for synchronizing and 2 buscoupler,1 sectoin dg no 1,2,3,and 2 sectoin dg no 4,5,6,and last section dg no 7,8 ....if buscupler no 1 and 2 is off mode ..than dg no 1,2,3,will synchroniz of another dg sets?

1777

---

i want to model paper for section engg.

1960

---

As a electrical engineer.. what are the basic norms should follow in transformer oil testing.. 1.What is the Electrode type? 2.How long time you will give for oil testing?

3579

---

What is dynamo?How it works and what is the function of dynamo in a DG.

2081

---

Hello sir i m student of gtu .what is idp.

2134

---

What are hrc fuses and where it is used?

1136

---

What is knee point voltage?

1080

---

How to decide and select the different earthing wire size for the different types of earthing

2220

---

How to select the proper VSD to operate high inertial load

1675

---

What is the meaning of loop in transformer

1715

---

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?

1850

---

Why generation voltage in thermal power plant is between 11kv to 33kv?

984

---