Answer Posted / ripun

Mf=field ct ratio/meter ct ratio *field pt ratio/meter pt ratio
Let field ct ratio=15/5a
Field pt ratio=11kv/110v
Meter ct ratio=-/5a
Meter pt ratio=-/110v
M.F=15/5*1100/110=300

Can we use 230VAC, 63A MCB for 120VAC, 63A supplied heaters load?

1431

---

Explain the operation of grid connected central solar inverter ?

1485

---

How to do maintenance of transformer feeder.

1811

---

For high frequency application we use which transformer?

1854

---

what is reverse power relay brief explanation and in b/w where it is connected

1982

---

what is the clear formula to calculate cable size for a load

1925

---

While testing LA mast,What are the parameter limits ?

1858

---

What kinds of decision are made about CT from it's Knee point(voltage & current)?

4968

---

if the armature current in a dc generator is ac ( sinusoidal ) why doesnt the sjhape af armature mmf a sinusoidal (ni) ? armature mmf in case of a dc machine is triangular.

1932

---

What is meant by derating factor?

1164

---

I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.

1901

---

How to calculate the sag of OPGW during stringing???

2540

---

what is meant by power and distribution transformer ?

1925

---

What happen when neutral point connected to core balance current transformer? (Neutral point of an alternator of a 180KVA DG. Neutral point connected to CBCT means enter to the CBCT)

2229

---

trasnfarmaer core make

1902

---