Answer / elavarasan.p

in sub station Hv side side leakage current will flow then
body earth will be samely to be connect to be in the lv
side some earth current will flow in lv side thats will be
approximately 1-2A will flow

Answer / mrinmoyboruah

Cable insulation together with cable conductors form
capacitance. On nergising a cable this capacitance gets
charged and cable charging current flows even if no load is
connected at cable end. Similarly when cable is disconnected
from power source it retains the original charging energy
until it finds a conducting path to earth for discharge.
Hence before touching a disconnected cable all its
conductors including metal sheath and armours should be
connected to a earth path so that the stored energy in the
cable gets discharged.

what does a string of resistors in a series will do?

0 Answers  

---

what are different types of alternator and discuss about the methods of cooling

16 Answers   Bhel, Jindal, L&T, Nalco, Vedanta,

---

what is the function of supervison relay?Draw its wiring diagram.

2 Answers   IBM, R.R. ISPAT LIMITED,

---

what is difference between megger & Contact resistance meter & its Application?

2 Answers  

---

what is cogging? how it can be controlled?

1 Answers   HCL,

---

---

Why transformer rating in kVA not in kW?

5 Answers   ABB,

---

why we use perllel conection system in the wiring?

4 Answers   Airtel,

---

WHAT IS MOBILE SUB-STATION? & REALLY BENEFIT IN INDIA

0 Answers   BMC,

---

Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity

0 Answers   NCC,

---

Merits & Demarits of Oil circuit & Air circuit breakers ?

0 Answers   Genco,

---

all interview questions with answers of ntpc (2000-2009

0 Answers   Hetero, NTPC,

---

how to calculate the Neutral transformer impedance?

0 Answers   Schneider,

---