Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / apoorv
it is start delta starter. in star connection ,
phase voltage is 1 by root 3 of line voltag and phase current
ids equal to line current.and in delta its vica versa
so at output we get , both reduced current and voltage
doe to reduce starting current.
| Is This Answer Correct ? | 2 Yes | 3 No |
Post New Answer View All Answers
What is vaccum currcuit breaker.define with cause and where be use it device?
Why strting torqe high in inducation motor?
dear sir/madam i want to get some knowledge about RRB EXAMINATION(section engineer) 1- what is minimum cut off 2- wht portion is major portion . 3- can any body provide Sample paper. thanks & regards ashish
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?
In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?
Write the programming software name for LG, SIEMENS,Messung,AB
Is there any specialised book to refer about fault level calculation both in MV and LV side??
Mention what are the different colors on wires indicates?
What will be result if we connect LT votage to the terminal of HT motor?
how to prepare the technical test
please tell me how a surge protector work on a DC 48Volt.? please describe briefly.
What is meant by reset level of the relay?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
