Answer / krishan chand tyagi

Transfomer overfluxing can be result of
1. Overvoltage
2. Low system frequency
A transformer is designed to operate at or below a maximum
magnetic flux density in the transformer core. Above this
design limit the eddy current in the core and nearby
conductive components cause overheating which within a very
short time may cause severe damage.The magnetice flux in
the core is proportional to the voltage applied to the
winding divided by thhe impedence of the winding.The flux
in the core increase with either increasing voltage or
decreasing frequency.During starrtup or stardown of
generator connected transformers, o following a
loadrejection, the transformer may exeperience an excessive
ratio of volts to hertz, that is, become overexcited.

Why is the earth socket in an electrical plug outlet made thicker and lenghty?

5 Answers  

---

transformer phasor diagram under load explain it?

1 Answers  

---

why ht motor connection in star

10 Answers   Suzlon,

---

what are the condition that makes hooter blow?

1 Answers  

---

What is the meaning of 'A synchronous motor floating on line'?

2 Answers  

---

why we are called the 4-20ma transducer,not 0-20 ma transducer??

3 Answers  

---

what is intermediate switch

1 Answers  

---

in three pin plug 6 Amp. 220v AC rating. why earth pin diameter is higher than ohter two pin? what its purpose ?

6 Answers  

---

what do you mean by plant earthing system.

1 Answers  

---

what kn of disc is used in 33kv,132kv,220kv,400kv,800kv transmission line

1 Answers   Jindal, Power Grid,

---

can i connect REF and Differencial relay in 1 CT core for transformer protection?

1 Answers  

---

how do i work out the Amps of a incommer if i am running 1 37 KW motor and a 0,75 KW motor and some solinoids

1 Answers  

---