Answer / k.prakashchandra

IE Rules 1956

errection check list for transformer maintenance

0 Answers   RRB,

---

Why 50hz and 60hz frequencies are used by the world, why they are not taking 55hz?

3 Answers  

---

How you give clearance to a spare feeder.

0 Answers   KSEB, L&T, Siemens,

---

How do you know when the battery is fully charged?

6 Answers   ABB, Pricol,

---

list of tests to be carried out at manufacturers end while purchasing a step up transformer of 11kv to 66kv ,2MVa Capacity.

0 Answers  

---

---

how to check regenerative load in drived motor

0 Answers   Hindustan Unilever Limited, NHPC,

---

If i have 200 test cases and we have to execute but we don't have time to execute all testcases.within 1 hour we have to execute that testcases and prepare the test report.so how i have to resolve this problem? is there is any technique in the testing.

3 Answers   Stag Computers,

---

What are the symptoms of a bad PG card of a drive (inverter) esp. of Yaskawa Ac Drives (inverters) G7 ?

0 Answers  

---

What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

0 Answers   ABB,

---

When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number

0 Answers   TATA,

---

If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

0 Answers   Nalco, NTPC,

---

lenz law application and define

0 Answers  

---