Answer / 7anoter4

I think it is the active [real] part of the transformer short-
circuit impedance.
Let’s say uk% it is the short-circuit voltage-4-25% percent of
rated voltage supplied at primary terminals when secondary
terminal are short-circuited and the current will be the rated
current. Then the short-circuit impedance Zk=R+jX
=uk%/100*Vrated/sqrt(3)/Irated –for 3 phases transformer. If
we’ll know kxr= X/R [6-40 ] then X=Zk/sqrt(1+1/kxr^2)
and R=X/kxr.

why can tv operate at low voltage??

2 Answers  

---

my question is Megger of cable insulation or swgr board meggerring some values in one day 50mohms,some other day checking different values(20Mohms). this tell that some person tell that that values ok. how to identify the megger value is correct. pls tell me the answer.

2 Answers  

---

how to select the isolation tranformer for siemens 802dsl cnotroller

0 Answers   Siemens,

---

how i decrease the neutral to ground voltage , thats i read 7v on my digital meter.i dont know about my earth pit.

2 Answers  

---

what is meant by Back emf ?where its occur ?

6 Answers  

---

What are the advantages of star-delta starter with induction motor?

7 Answers   Merchant Navy, Naval Academy, Samundra Institute of Maritime Studies, YMCA,

---

Bhel supervision exam question: If 2 generators are working in a network. And if suddenly the field of anyone generator weakens. What will happen in the network? 1. The generator will run as motor 2. The generator will run as motor in reverse direction 3. The generator will take lighter load 4. The generator will take more load

9 Answers   Bhel,

---

how to select the double earth conductor if 21A full load?

0 Answers   L&T,

---

TYPES OF TEMPERING OF ENERGY METER

1 Answers  

---

we are operationing 3NOs 800 Kva generators by singronyus.specialey evening time our panel trip. the panel showing generator earth fault

4 Answers   RRB,

---

What is the difference btwn grounding and earthing?

11 Answers   HAL,

---

What the full form of KVARs

2 Answers   Siyaram,

---