why the frequency and voltage in india is 230v and 50HZ. when compared to USA say 110v and 60 HZ.

471

How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva

625

what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded

1126

Atwhat condition reverse power relay will act?

1068

what is saturation kit?which use above 15 kw motors panel side.

2702

what is the condition for YnD11

1489

I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

849

which motors are used in electric traction?

100

hey guys help me out.....what  are the industrial uses/functions of nozzles in industries 

639

What is the formula to calculate a three phase alternator

1218

How to calculate Temp from Resister from PT100 equation,

580

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?

1209

pls tell me function of closing coil of A.C.B.

2342

3 phase Motor will be given 2 phase after 2 to 5 second we given 3rd phase so Motor Run sum-time in forward or sum time run reverse direction. All time phase sequence is not change. Why motor run in reverse direction? Please Explain........

938

What is the most accurate way of testing ELCB?ELCB is better than RCD?

2271