Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / bharat
In DC motors, Voltage equation is V=Eb-IaRa
V = Terminal voltage
Eb = Back emf in Motor
Ia = Armature current
Ra = Aramture resistance
At starting, Eb is zero. Therefore, V=IaRa
Ia = V/Ra where Ra is very less like 0.01ohm.
i.e, Ia will become enoromously increased.
Ref. Electrical Technology Auth : BL Theraja, Vol-I & II.
| Is This Answer Correct ? | 37 Yes | 3 No |
Post New Answer View All Answers
What is the meaning of loop in transformer
WHAT IS THE MEANING OG (li = 7 In)
For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?
If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?
what is basic difference betmeen normal & flame proof motor??
why you don not show protection and type of isolation in key single line diagram?
How to discuss the phase shift of transformer considering open delta?
what kelvin's law ?
why do we have spikes enough to burn electronic boards, when generators are not grounded
What is cable tray, its type, and its support?
Mr. mohh sahid m not satisfied for ur answer to the que weather the size of transformer increases or decreases withchange in fr for more detail go to the answer given by me
What is quadrantal symmetry?
what is the star delta connetion and how can do it a three phase motor with control witing with picture
What is meant by Im=30mA@Vk/2. How to know the kee point voltage for CT design
Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .
