Answer Posted / jeevan
soft starter is used to reduce the starting current by controlling the applied voltage with the use of thyristors connected in antiparallel. but speed cannot be controlled as of VFD.
once the full voltage applied at certain acceleration period, bypass contactor would be energized to avoid thyristor drop during operation.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How shall i select the value of capacitor or inductor in a system?
Motor,transformers,capacitor tubelight etc....
what are the standard IR values should be of R-E, Y-E, B-E, R-Y, Y-B, B-R of VCB in closed condition and in open condition for 500KVA & 1000KVA transformers. and what is the acceptable range when tested by 5000V megger.
i need list of swg(standard wire guage) or area of conductor v/s current carrying capacity of conductor copper & alluminium...
what causes contact chatter when there is no demand on the air conditioning unit?
how many Classification of fire extinguisher
What is Servo Ventilated Motor?
Explain the operation of variable frequency transformer?
can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?
Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?
How to select transmission line type (i.e. 11kv or 33kv) for new established industries
what is magnetizing and demagnetizing current in generator and motor?
number of I/O devices in siemense plc
If we have 11 kv RYB Phase single core cable near about. Then wht effect and losses
Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph
