Why different values of B’s (magnetic flux density) are
chosen for DC machines and Induction Motors?
- 1 Answers
- 2683 Views
- I also Faced
- E-Mail Answers
Answer Posted / iamdon
Induction Motors are designed for COMPARATIVELY LOW VALUE
OF B.Because if we select higher value of B,the magnetizing
current requirement for establishing the working flux in
the air gap will became high.This reduces the power factor.
This condition is undesirable hence must be avoided.
DC machines are designed for COMPARATIVELY HIGH VALUE OF B.
Because if we select lower value of B,the amount of force
developed will became small.Since there are large spaces
available on poles,so we have no difficulty in putting
extra number of turns on it for getting higher value of B.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
Why computer humming sound occurred in ht transmission line?
what are the 4 rules to start the motor?
How can we calculate ac current from the given DC current when AC voltage is given?
In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?
dear sir, i completed diploma in electrical in 2005, how i can get electrical supervisor liance in mumbai
Can we use both Electrical & mechanical interlock between tow breakers? if yes how, please explain
What is the difference between Delta & Wye windings?
What is the criteria that generally follow by distribution licenses to fix contact demand of their industrial customers?
How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.
1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?
Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks
what are the range of memory address in plc for L&T lx7 4A
difference between Ac and Dc mcb ????
What is the lower limit of break-down voltage of converter transformer.
What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?
