Does all the output contacts (N/O as well as N/C) of a Numerical relay operate when relay receives a binary input/inputs or contacts are designated to specific logic input/inputs and only these contacts operate?

2084

why impudance relay used for medium transmission power system? why not others?

1471

What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1995

what is transient stability analysis means?

2147

HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

1963

sir i used 3 hp of motor for spraying pump, other home light and other home items which size of allminium pvc wire ix used

1890

transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?

2097

EXPLAIN THE WORKING OF SERIES REACTOR IN HT CAPACITOR BANKS (FOR VOLTAGES & CURRENTS)

8271

HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

3621

what does a k rating in a transformer means?

2505

Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

2079

what is differnce btwen lll and lllg faults

2017

Could the power factor on electrical system can affect the registration of the kwhr meter or the CT/PT? 

1962

I am about to write exam in RRB bangalore for the post of section engineer.please provide me with previous exam questions

2147

relation between power station capacity and voltage level?

2059