Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / ajayk
yes reason is commutation
but then .we can also use
metal brushes.why dont we
use then. Reason is 1.carbon
has high resistance which
decreases the time constant
of sparking transients during
commutation,so less sparking
and 2.they are cheap too and
long lasting.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.
What is an ac motor?
What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.
I use 20 nos led tube 4feet, in pathway 100mtr approximate, so what size cable i use for lighting
If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?
Define coil span?
"TRANSFORMER MODELING AND ANALYSIS" MEANS WHAT AND WHICH TOPICS U READ IN THIS
WHY L-G FAULT IS MORE SEVERE IN TERMS OF RRRV?
i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula
what is RNG in the DG synchronizing by PLC?
in dc suppy frequency is zero why? if dc frequency is zero how to exist dc transients and ac transients
How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?
How we can change the direction of rotation of Induction motor? Prove it using graphical
A commercial Building is designed with 14th floor levels with indoor substation of three phase transformer with rated capacity of 1000 Kva.The transformer delivered 65% of its rated capacity at 0.67 power factor lagging.Because of low power factor, the power customer was penalized and certain cost was charged accordingly based on every point percentage lower than 85%.This situation may repeatedly happen on the succeding energy bills of power customer.The power customer is desired to improve its historical power factor of 0.67 lagging and no further penalty be impose by the local power company on the next bill. Q: Identify the appropriate solution you want to offer to Client?.Justify SCIENTIFICALLY and MATHEMATICALLY the principles behind the solution.
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
