Answer Posted / jayakumar

If only one tap changer is required, tap points are usually made on the high voltage, or low current, side of the winding to minimize the current handling requirements of the contacts. However, a transformer may include a tap changer on each winding if there are advantages to do so. For example, in power distribution networks, a large step-down transformer may have an off-load tap changer on the primary winding and an on-load tap changer on the secondary winding.


Reference from Wikipedia

what is p.s impedance measurement test in earthing transformer?

2473

---

What is the universal motor?

1161

---

Define closed loop control system.

1152

---

Why let through energy not considered for ACB breaker while cable sizing?

2472

---

Give the expression for the frequency of oscillations in an op-amp sine wave oscillator?

1160

---

how to find Harmonics and types as per the equipemnts

1337

---

There are different classes of protections in power plants.class a,b,c are clear..is there any class d and e r there..and elaborate class b protection.

2149

---

what is the relation between size of the anteena and wavelenghth of radiated wave

2239

---

At what factor resistance r of a conductor depends?

1150

---

would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

2510

---

what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?

2006

---

How to see the inductance in a transmission lines

2183

---

What is the difference between diode and a transistor in terms of the direction of current flow?

2266

---

How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current

1615

---

what is dry and wet frequency withstand voltage? why & where it is used??

2502

---