Answer / g.trinadh

In off load tap changing transformers tap is changed after discharging of load on LT side where as in on load tap changing transformers tap can be changed with out discharging load on transformer.

Answer / vinoth kumar.n

In off load tap changer the transformer will be in off
condition,it safe for equipment and personal safety,,

In on load tap changer the transforme will be in running
condition,there is no interruption of power supply,but
there is unsafe for windings.

Now a days 230kv are and above prefering only off load tap
changer,The tap changer provision will be held on HT side
only.

what is the responsibilities of electrical project engineer?

2 Answers  

---

how to measure the A.C flux .-instrument

8 Answers   NTPC,

---

What is meant by RCCB

3 Answers  

---

While performing load test on DC SERIES MOTOR, does the voltage decrease slightly. Why?

2 Answers  

---

In a single phase converter, the no. of SCR conducting during overlap? a.1 b.2 c. 3 d. 4

3 Answers  

---

explain me the exact concept of generator neutral....????

2 Answers  

---

What can make the the overloads operate when a star delta three phase motor starts?

1 Answers  

---

can we use ZNyn11 transformer instead of Dyn11 transformer in distribution for effectively eliminating harmonics from the industrial loads.

0 Answers   DEWA,

---

Stator of three phase induction motor creates Rotating Magnetic field.But why not Transformer?

21 Answers  

---

define regulation

3 Answers  

---

How Cable Size is determined for a Particular load.

4 Answers  

---

how to calculate the earth mat design in 132 kv substation yard ????

0 Answers   Divis Laboratories, KSEB, SWPL,

---