Answer / amarnath

Feeder pillars are the breaker panels which is the very
first set of switching/protection device at the
output/secondary side of the transformer and panel board is
a set of switching/protection devices used for distribution
of power supply.

The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

2 Answers  

---

Why electrical engineer use Cu Strip for transformer neutral why not GI Strip? What if we use GI instead of Cu does it affects the transformer performance.

7 Answers  

---

10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

---

Two bulbs of 500w and 200w rated at 250 v will have resistance ratio as ?

2 Answers   CGL, Dreamz Infra, Sunny Developers,

---

type of transformer

3 Answers  

---

---

I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

0 Answers  

---

working principle a.v.r. ?

0 Answers   Gem Sugars,

---

why and how fault current flows through ground?

1 Answers  

---

What is mean by diversity Fator?

7 Answers  

---

Why do power lines not short out when they fall into water?

0 Answers  

---

When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,

3 Answers  

---

.if the vector group of two transformers is not same n tey r connected in parallel operation then what will happen?

2 Answers   ABB,

---