Answer / guru

The purpose of grounding the CT secondary is inorder to
protect the CT circuit in case of any earth fault in the CT
secondary circuit. Thus even there is an earth fault & the
CT is open the current will still circulates through the
ground to CT. It prevents the accidental open circuit in
the CT which may lead to develop a high potential in
secondary which may lead to CT blast.

Answer / mak

Only For the safety purpse the secondary is short circiuted.It it is open heavy current ll flow and damage the equipment

what is single turn and multiturn encoder ? Can single turn encoder be used to show rpm of a motor(on shaft) ? Plz explain in brief .abanirout@gmail.com

1 Answers  

---

If the secondary winding will be open in current transformer, how to damage the insulators

2 Answers   TPDDL,

---

what is the Auto Mains Failure Panel function in DG?state its function?

3 Answers  

---

why ELCB's are not useful for operation theater equipments ?

4 Answers   Reliance,

---

How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

0 Answers  

---

---

hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

0 Answers  

---

What is Residual Voltage & Residual Current?

4 Answers  

---

why starting current is high and resistance is almost 0 during the starting of motor dc motor...?

0 Answers  

---

protection used for alternator , feeder , transmission line

3 Answers   NHPC, Perfetti,

---

What is the minimum IR value of HT/ LT cable? Pls post separetely!!!!!

0 Answers   Bhel,

---

dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai

0 Answers  

---

what is meant by dielectirc medium? what is the dielectirc value of air and water???

2 Answers   ISRO,

---