While HT line put on to activate ACB in low tention panel VCB tripping instantly.why it happens
155811KV electrical line going through the forest in cloudy night ,how can we find the direction of line.
5 5260Am using an electronic digital display to see the RPM of ABB ACS 550 drive, which is showing negative value when the motor & drive in stop mode but it is showing correct value during the run mode. can anyone help me out??
2 2547Post New Electrical Engineering Questions
Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,
how to calculate the formula of cable size if motor kw is given
Operation of isolators.
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
Which level of the Transformer oil got dielectric strengh? And why?
we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?
CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor
How to detect voltage vector shifting in interconnection protection.
what is the control circuit for operating the clean room air shower
Define unilateral circuit?
What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?
How 48-relay (incomplete sequence) functions?
what is meant by 3rd hormonics ?
In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?
what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..