Answer / md.ariff

LXI H,2500H
MOV A,M

why single induction motor is not self starter?

3 Answers  

---

What is tan delta & PPM in transformer? and whats its IS value?

0 Answers  

---

How to calulate the NGR resistance ?

1 Answers   L&T,

---

Which Current transformer will be bigger in size, 400/5 or 400/1 & why?

2 Answers   Apollo,

---

during installation time of transformer and alternator which points we have to observed?

0 Answers  

---

1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

0 Answers  

---

What is the role of link in neutral in a three phase ac system?

10 Answers  

---

difference between fleming's left hand rule and RHR briefly.

3 Answers  

---

Where is the center of magnetic field in alternator

1 Answers   GMR, Siemens,

---

I would like to install the largest KW alternator to a 200 amp aluminum bus box in my home. Is it possible to install a 250 KW 400v 251amp synchronous alternator to my home?

2 Answers  

---

what is the UPS

4 Answers  

---

Do we really need wheels for the transformer

1 Answers  

---