Answer / k.prakashchandra

More primary and secondary turns are required to make up
for the lower primary current to maintain the secondary
current.Hence the core also will be bigger.

Answer / isa

CT is a step up transformer thats why with the decrease of ct ratio the the current in the secondary side will increase as a result of decrease in secondary voltage ,which will cause more I sqr. losses which is not economical further.

What is the difference between ohmic resistance and effective resistance?

2 Answers  

---

Why R ph of Hv and Lv is shorted or joined together while taking vector group?

1 Answers   IOCL,

---

when current lags behind voltage how does it affect the circuit.In other words what is the significance of lagging current?

3 Answers  

---

Our transformer capacity is 500kva & voltage ratio is 11kv/433v step down tf.Now i need to know if my input voltage is 10500v and what would be the secondary side voltage i.e output voltage ?

3 Answers   Helma,

---

In PT the coil is wound on?

3 Answers   DVC,

---

what is High resistance grounding and whatis the criteria for the selection of High resistance grounding

1 Answers   MAHINDRA,

---

check list for anuval maintatince check list of oil transforms

2 Answers  

---

wat's the procedure to take short circuit current for cable selection

0 Answers  

---

what is mean by dual digital protection in the relay field?

0 Answers   ABB,

---

Dear All, Can anybody please tell me which value(saturated or unsaturated) of sub-transient reactance(Xd") we take for the calculation of fault current of the system?

2 Answers  

---

why are the likely reasons for bochholz & pressure relays oprate due to a internal fault but not differential relay ?

2 Answers  

---

If the primary side current of 33/11 transformer is 64 amps then what will be secondary side current?

2 Answers  

---