Answer / sachinvom

PNP and NPN. A PNP transistor is that in which a N-type
semiconductor is sand witched between two P-type
semiconductor. A NPN transistor is that in which a P-
type semiconductor is sand - witched between two N-type
semiconductors.

Answer / shatrudhan prasad

two type of transister,npn,pnp.we made npn transister .when select two pn diode thanafter join together.p terminal of first diode is join together p terminal of second diode.

why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

4 Answers  

---

Whether should be the oil level in OCTC transfomer? It should be upto winding immersed completely or should be upto tap changer s/w? How it will affect the performance of the transformer. Rating may be 33KVA

0 Answers  

---

why the rating of a transformer in kva not in kw.

9 Answers  

---

For 300 MW plant what is the distribution voltage

6 Answers  

---

Electricity sometimes can be dangers , sometime got shoked form it . It is because of volatge or Current

6 Answers   Kirloskar,

---

what is the difference between capacitive and resistive voltage divider?

0 Answers  

---

what are the colour's and their indications in bucholz relay?

4 Answers  

---

Why a transformer is known as a static device?

7 Answers  

---

WHAT IS ELECTRICAL MAINTAINTENCE ?

0 Answers  

---

Suppose am having the PF value .8, so how can we say that is it lagging or leading?

11 Answers   Bhel,

---

Can any body tell gulf interview question for experienced electrical engineer ?

0 Answers   Gulf,

---

which is best ac or dc

3 Answers  

---