in a dc motor we supply current only to the armature
conductors,from where is the field winding gets excited then??
Answers were Sorted based on User's Feedback
Answer / ankush miglani 09503043086
o helo bewkoof
y are u confusing me.
dear there are two types of dc motors
1. self excited
2. seperately excited
in self excited the armature and field are fed from single
supply
while in seperately excited motors two different supplies
are used
Is This Answer Correct ? | 31 Yes | 2 No |
Answer / abhsiehk
in d.c. motor both the armature & field are supplied by
d.c. supply
Is This Answer Correct ? | 5 Yes | 1 No |
Let us not forget about permanent magnet motors which are
usually very small
Is This Answer Correct ? | 2 Yes | 0 No |
why a tester wont shock while testing the power in house
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor frequency at maximum torque point is A 3.33% B 4.44% C 5.55% D 6.66%
In electrostatic precipitator why positive terminal of tranformer rectifier unit is grounded?
What is the diference between increased saety motors and non sparking motors?
how CBCT works?
What is function of inverter? and who it's operate & what are controlling devices are used?
Write a note on materials used as a fuse element.
Why we use the D-curve MCBs in critical power distrubution.
We wish to test 60 Hz systems from a 50 Hz supply. To acheive frequency conversion, we use a VFD. The VFD powers 40 kVA transformer, which has motor and non-motor loads on it. Will the transformer work?
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
what happens when we apply dc to a transformer
how we can calculate which capacity capacitor bank we have to add for improve pf?
3 Answers Consultancy, JM Huber, Torrent Power,