Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / ashhad khan
if armature wdg is opened then rotor will start deaccelerating normally and motor will stop eventually. you can think it as a small DC permanent magnet motor supply disconnected suddenly. it will jst stop rotating. because in our case also field winding is connected to supply so magnetic field will be there continuously but our armature is disconnected from supply so it will stop generating magnetic field which would have forced rotor to rotate.
question should be what would happen if fiel supply is disconnected suddenly in a running motor.
because in this case concept of back emf comes .As field vanishes so back emf becomes zero and we know eq. v=Eb+IR so current will become large enough to burn out the armature winding of motor
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
a starter used for squirrel cage induction motor?
Define peak time.
What is the pro & con of having 11kv & 33kv incoming, and what is the adv & disadv. of converting from 11kv to 33kv.
How to detect voltage vector shifting in interconnection protection.
if any house we instaled a 1.5 ton ac and its phase cable of wiring is installed but netrual cable of wiring not instaed. my question is that is neutual of house(for other wiring is capable for ac load or a sepeart neutrual wiring required
Terminal blocks is used for segregate the connections... There is any principle for terminal block..?
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
how can i get the formula to find out the cable size if i know the load of main fuse protection.
why ss stablity limit is more transient stablity limit?
what is proper capacitor placement? How to evaluate capacitor size?
What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?
what is mean by ideal infinite bus? why it is required to consider in fault short circuit calculations?
Why Stabilising Resistor used in REF circuit ?
I completed iti in2004 I was worked in A grade contractor can I get c licence
WHAT IS counter flux IN CT?
