Answer / raviahir

Relay sense the
fault nd suply
information to
circuit breaker

Answer / gtmanikandan

Protection relay is device detect the fault trip faulty section of power system

We store the d.c supply...then why can't we store A.c supply???

4 Answers  

---

can anibody tel me on what basis the transformer vector groups are determined????

1 Answers  

---

WHAT IS THE USE OF TERTIARY WINDING IN A STAR/DELTA TRANSFORMER ?

3 Answers  

---

URGENT PLEASE//////////A WORK SHOP IS HAVING A 100 KVA TRANSFORMER 11KV/415 VOLTS, AND THE CONNECTED LOAD OF THE WORK SHOP IS 80 KW WITH INDUCTIVE LOADS, LIGHTING LOADS,ETC., HOW MANY EARTH ELECTRODES ARE NEEDED AND WHAT IS THE EARTH RESISTANCE OF EACH EARTH ELECTRODE AND COMBINED EARTH RESISTANCE in normal soil. AT 11 KV SIDE AND AT LT SIDE. HOW TO CALCULATE.

1 Answers  

---

what is the type of pilot wire in pilot relay?

1 Answers  

---

---

what is general test conduted by transformer

8 Answers   Wipro,

---

how can we change the rotating direction of single phase AC induction motors?

12 Answers   Heubach Colour, L&T, MNM Jain Engineering College,

---

Why do we need ring main unit (RMU). what is its purpose and its advantages . what is the operating function of rmu

6 Answers   MahaDiscom,

---

why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?

1 Answers  

---

In 11KV Double pole structure for each phase we are using Disc one Insulator. Why we are not using 2 r above insulators instead of one insulator?

4 Answers   Genus,

---

What is the maximum size(MVA)of power transformer available in the India/world?

13 Answers   Adani,

---

A parallel flow heat exchanger will perform better than a counter flow heat exchanger. State if the statement is true or false.

0 Answers   Blue Star,

---