how many earthing should need for UPS, where its connected
Answer Posted / mahesh bial airport
two earthings required for UPS one is body earthing and
another one is dedicatedneutral earthing
| Is This Answer Correct ? | 13 Yes | 1 No |
Post New Answer View All Answers
Explain the method to keep noises low in a control system?
What is reverse power relay?
DEAR SIR/MADAM,CLEARLY EXPLAIN ABOUT CRAWLING AND COGGING EFFECTS IN INDUCTION MOTOR.
Define settling time.
I am experienced with house and industrial wiring but I don't have any licence how can I apply an licence and which type of licence i can get i didn't complete deee just only experience
1. transformer design formula ? 2. how to calculate the primary turns and secondry turns ? 3. core types ? 4. how to find the primary current and secondry current ? 5. how to calculate the stacking factor ? 6. range of fulx density ?
how power trnafor from 1 point to another point in bus bar ya transmission line( voltage trnasfer from 1 point to another poin)
HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com
how could we know the size of cable by physical view?
What is the principle of HIGH SPEED DIRECT DRIVE MOTOR ?
I have a drawing of a wound rotor induction motor for a crane. This crane motor has 5 forward speeds & 5 reverse speed implemented of course with different amount of resistance for each speed setting selected. What has got me scratching around is the fact that 8 of the 10 speed selections switch in uneven (unbalanced) amounts of resistances on each of the 3 connections to the motor's rotor.Can this be possible? I would have assumed this would produce unbalanced rotor currents and therefore vibration in the motor. I would greatly appreciate anyone's comments on this. Many thanks, Confused.
What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.
how do we calculate length of starting time and repeated starting of a direct online starter?
What are the advantages and disadvantages of the ac motors?
Why arc quenching is used in Diode ?