Answer Posted / amit rajak

High voltage bus bar can be protected from short circuit
fault or surges by using reactors.

These are simply an inductor which is placed at different
location or that part of circuit which is to be protected.

its principle of working is that it dissipates energy in the
form of heat when high voltage passes through it

as per the voltage of the bus bar variable reactors can be
used of variable rating.

working principles of cf lamp,incandescentlamp and f lamp?

2201

---

take 100kva DTR( delta/wye ), what ll happen if we connect 11kv to LT side instead of connecting to HT side? will the DTR behave as a step up transformer or something else????

2192

---

how i can calculate the size for fire cable

1935

---

during installation time of transformer and alternator which points we have to observed?

1881

---

A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

1221

---

diff. between tension mode & speed mode

2259

---

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

1162

---

What is the accepted limit to increase the choosen transformer capacity over the load and why ?

3451

---

How does PLC work for sychronising of Two or more DG sets?

2020

---

what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1878

---

A 2083kva AVR was tested, phase to ground shows continuity, what is the implications

969

---

Q: How to calculate Transformer losses , tell us by Formula.

1990

---

previous year paper of ntpc bhel for degree in electrical enng

3155

---

How will you define capacitance?

1100

---

what is the difference between switchgear and circuit breakers and is there any difference between outdoor and indoor switchgear and circuit breakers , and how would you differentiate between switch yard and substation and grid station . thanks

2163

---