Why the brushes used in dc machines are made of carbon not
from other metal?
Answer Posted / pavan msh
brushes used in dc machines are mostly made of carbon bcz carbon is of low cost and also a good conductor
| Is This Answer Correct ? | 5 Yes | 4 No |
Post New Answer View All Answers
What is main cause of cable's terminal point burned in Lug on high temperature although lug and cable selection is ok as per stantard and also tightness is ok as per situation. so please take in deep and tell correct answer thanku.
If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)
How earthing/grounding done in aeroplanes and ships.
What do you mean by passive circuit elements and why these are called passive?
An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.
Write masons gain formula.
Why you want to join non technical field when you are an engineer?
what will be the min and max voltage flow from neutral to earth?
should %impedance be high or low in a power transformer? if so why?
how can motor both beasrings insulation resistance can be check?
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
how slip power recovery system work
sourse is 66 KV / 350 MVA, transfarmer is 1000 KVA 6.6 / 0.415 kv, iF fault is 28.75 MVA on 0.415 KV Bus then calculat the Transfarmer Impidance
Is it required to do earthing in 2nd shop if earthed armoured cable is laid from 1st shop ?
Explain the working of variable frequency transformer?