1. Why a DC motor starter is called 3 point starter
- 21 Answers
- 74991 Views
- ABB, CG, College School Exams Tests, Crompton Greaves, Infosys, Siva, I also Faced
- E-Mail Answers
Answer Posted / siddarth.m
the main purpose of using a three point starter is
to limit the starting armature current.......
This is because dc motor the initial voltage difference is
less so high current passes through the armature windings
which is not a desired factor.When we use a 3 point starter
it slowly induces the back emf in motor so that the voltage
difference is less and rate of current flow is less, so the
motor doesnt get spoiled
| Is This Answer Correct ? | 88 Yes | 24 No |
Post New Answer View All Answers
What is the purpose of stand by earth fault protection for transformer ?
Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?
54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?
Explain the purpose of inductor in an electric circuit?
What is the tipical Online UPS input voltage for 20 KVA load ( 3 Phase or 1 Phase )? Why ? Explain it...?
how we test a 3 phase motor on single phase supply....? HOW WE RUN A 3 PHASE MOTOR ON SNIGLE PHASE. supply for testing..? how we verify of a 3 phase motors 6 wire & name thame a1/a2/a3..b1/b2/b3 and c1/c2/c3 for connecting star delta starter ........i have only 1 phase supply ? help forum..........
Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803
what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
why steady state stability limit is greater than transient stability limit ? How it can be explained ?
direction of tarbine& genrator
i have to install a HT panel, what components, I have to use in this and what will the diagram of that diagram,please tell me each and everything.
what is strip power factor?
State the other types of Air Conditioners?
what is dry and wet frequency withstand voltage? why & where it is used??
