why field resistance is higher than armature resistance in
dc machines? and why filed resistance is kept at min value
at starting in same time of armature resistance at max value?
- 4 Answers
- 30836 Views
- I also Faced
- E-Mail Answers
Answer Posted / sai
To allow the maximum current through the armature, resistance is kept to very low value. According to ohm's law, V=IR.
As R is very low then current becomes maximum.
| Is This Answer Correct ? | 21 Yes | 10 No |
Post New Answer View All Answers
why does connected a indutor with mnsformeretering core of current transformer ?
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?
If we need4× 50mm sq cable but it's not available so we can pull 4×25mm sq 2cables
what is the difference between dry and wet type of 132kV terminations. which one is durable
if sf6 gas low in gis what will happen
Compare salient pole and cylindrical rotor machines.
How many types of colling system it trformers?
how braking & making capacity of circuit breaker is calculated?
How to calculate the Harmonics losses in terms of cost/unit.
I have c license but I don't know eligibility of Max Kilo Volts under the electrical licensing board.
What is difference between Over Current & Earth Fault protection?
how to compare with Relay settings for HT< panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps
What is the mechanism of WTI
which type of effect of turbine and generator reverse power protection ?
How to calculat the ratio of HT\LT in energy meter
