Interested to Buy Any Domain ? << Click Here >> for more details...
Which power will flow first if we switch on a motor? Active or
Reactive? How?
- 5 Answers
- 8435 Views
- NPTC, I also Faced
- E-Mail Answers
Answer Posted / rishi
reactive power will flow first because as we have generally the motor electrical equivalent circuit composed of series resistors and inductance.
now if in any such circuit if current is to flow then it must charge the inductors first and then current will flow through resistors. hence this will lead to reactive power flow at the very first instant of machine switching.
| Is This Answer Correct ? | 5 Yes | 1 No |
Post New Answer View All Answers
High voltage test procedure of in swgr board. why should measure millivolt drop on testing time?
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
Show Details FROM:Muhammed Ikram TO:qa@allinterview.com Message flagged Saturday, June 4, 2011 10:07 PMMessage bodyHello all, i want to ask a question to all of you that what is VMM (voltage monitoring module )? how it work,s? i heard somewhere that it compare 1 phase voltage to other phase voltage. but there is also some setting on it. how to set it,s setting. please tell me briefly. Thank,s and Regard,s. Muhammed Ikram.
Merits & Demarits of Oil circuit & Air circuit breakers ?
how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?
How the setting of the vector surge relay shall be calculated when the relay is to be used for Grid islanding application?
what is the use of vcb & isolator in substation?
how unidirectional torque is produced in DC motor?
which type of cabel
Under wat condition statcom operates as an inductor for the transmission line?
please give some hindalco placement papers for written exam
What does the term supermesh means?
whati s the sludge current in ups
How to design harmonic filter at the project stage without nowing the harmonics levels
what is automatic voltage regulator?we can control the vlotage by using fuzzy controller in matlab?why we go for fuzzy?
