Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / suganya
To limit the starting current we are using starters. In
motors the voltage equation is, v=Ia.Ra + Eb. At the time of
starting no back emf will be there i.e Eb=0. therfore
v=Ia.Ra since the resistance is negligible v=Ia i.e armature
current will be equal to the supplied voltage and speed will
be high. so to limit this current we are going for starters.
| Is This Answer Correct ? | 12 Yes | 0 No |
Post New Answer View All Answers
how can motor both beasrings insulation resistance can be check?
How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?
When we need up only in o/p 440v, so why we use directly in 11kva in input?
in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4
63MVA,220KV/6.9KV Transformer LV side neutral is connected to Earth pit through NGR. Whether this earth pit required to connect with near by below grouding earth mat or it is to be kept separate?
which mm cable should be used for 1.hp immersible pump motor for the distance of 330 metres?
some time we open engine breaker 8.0 MW load but plant not trip. and another time engine open 4.0 MW load engine trip why? individually engine breaker open & individually emergency stop why difference?
What is meant by Low Resistance Cable and High Resistance Cable.
Define early construction of human being
what is relay what is protection & contact multiplying relays where it is used function in brief
plz send me the syllabus or any sample paper for engineer trainee recruitment if any,on ravinder911@yahoo.com
How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.
I want definition for ABT Meter (Availability Based tariff) ?
what is the difference between electrical choke and electronic choke?
An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?
