short circuit test of transformer gives what?

9 Answers   NTPC,

---

what are types of servo motors

1 Answers  

---

What is the normal earth resistance?

11 Answers  

---

From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

0 Answers   Schneider,

---

Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

0 Answers  

---

Can a 150 kva 3 phase,440v/230v delta-wye connection stepdown transformer can be used in reverse as a step up tranformer ?

3 Answers   Meralco,

---

- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

---

if we know Fault level say 25 KA , How to decide busbar size for Distribution network of 1000 Amp Breaker ? Sample Calculation or Farmula Available or not ?

4 Answers   TCS,

---

what is the reason for balance of voltage in magnetic balance test?

2 Answers   Reliance,

---

What is the direction of rotation of blades in a table fan and in a ceiling fan ?

11 Answers   Power Grid,

---

Is it possible Z axis excess error alarm reflect in X axis if yes explain ?

0 Answers  

---

what do you mean by puncturing of insulator by ice -coating?

2 Answers  

---