Answer / sudheer

Electrical Impedence is the measure of the opposition that circuit presents to a current when a voltage is applied.In quantitative terms, it is the complex ratio of the voltage to the current in an alternating current circuit

Why 1/3 is used in symmetrical components?

0 Answers   ABB,

---

I have tow 200 KVA UPS, both are in parallel mode.My question is that, both are running on battery when power fail, if one of them fail (Eg rectifire fails or some other reason), at thet time reverse power will come to faild ups if it comes then it will harm to failed ups or not? if not then how it protects to faied ups????????????????

1 Answers  

---

In short transmission line,why does the receiving end voltage is less than sending end voltage?

4 Answers  

---

In Railway,why we are used HT Line 25KV ?.why we are not used 11KV,33KV and others for This?

37 Answers   Airtel, BSNL, RRB,

---

im electrical engineer, could any one help me for FEWA exam questions please ?

0 Answers  

---

Difference between RCCB, RCBO and ELMCB.

0 Answers   Megatron Solutions,

---

In case you don't have coal and salt for earthing, how can you achieve good temporary earthing?

1 Answers   Focus Energy, NHPC, ONGC,

---

In 11/0.414 KV Parralel supply network with Bus tie closed what will be the fault level is it doubled or halved??

0 Answers  

---

1 HT service how many LT Service

1 Answers  

---

explain the existence of reactive power in electrical engg?when it generates?

1 Answers  

---

MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 Answers  

---

A 11 KV motor is working. if the supplay is fail. what will happened with it's breaker? Trip / remain the same condition?

4 Answers  

---