wat do knw aboot circuit breakers ?

9 Answers   IOCL,

---

why the field winding of synchronous machine is excited by dc source

2 Answers  

---

can I connect 25KvA stepdown transformer(RYB-440V,UVW-240V) to the output of 15KvA,3-phase online UPS(440V phase to phase)please brief.

1 Answers  

---

Explain the experiment on ward leonard method of a speed control on a dc shunt motor with an suitable circuit diagram.

0 Answers  

---

What is difference between mcb and mccb.

0 Answers  

---

---

why electric shock due to dc is dangerous than that of ac

44 Answers  

---

While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

0 Answers  

---

Since phi is the angular displacement between V & I, then why we use phi in power triangle ie. when showing active, reactive & apperent power in triangular manner & if it is ok then where is V & I in the triangle.

1 Answers  

---

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

5 Answers   AC, Formo Plastic, HBL Power Systems, SECL,

---

Why we use circular(Stepped) cross section in transformer core?

0 Answers  

---

why colour of electrical equipment( like transformer) is grey

10 Answers   Trident,

---

What is the differance between 2 dc motors of armature voltage 660 v and 440 v?

0 Answers   Kirloskar,

---