Answer / prabhas

Motor current rating is calculated by using the formula
I= P/1.73*V*PF

Normany it is 1.8times of power of the motor will be their
in 420v 3 phase motor.

Ex: 500Kv HT motor 11kv voltage
is Approx. 32A is the rated current.
so 32.5 or 33A is OL Setting.

Answer / manish

=32*0.9
=28

i want some interview related questions with their answers which can help for attend the interviews...

0 Answers   Janta Glass,

---

1.wat is the purpose (or)function of regulator? 2.wat is the purpose of stabiliser?

3 Answers  

---

difference between converter and invertor

2 Answers  

---

Define bibo stability.

0 Answers  

---

The ratio of white balls and black balls is 1:2. If 9 gray balls is added it becomes 2:4:3. Then what is number of black balls ?

3 Answers   CTS,

---

---

Why increase in current leads to increase in conductor temperature?

0 Answers  

---

WHAT IS THESETTING CALCULATION FOR THE RELAY?

1 Answers  

---

if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

0 Answers   First City,

---

How I design capacitor bank for different load.7MW connected load.

3 Answers   Samtel,

---

what is bus PT ?

4 Answers  

---

transformer is connected with 50hz and 60hz at same rating which will give more output on same rating

2 Answers   Palace Consultant,

---

what is short circuit force ? How to calculate it for Panel?

1 Answers   Bilt,

---