what is the difference between squirrel cage & slip ring
induction motor?
Answer Posted / im
in squirrel cage : rotor winding i.e., heavy copper bars are short circuited so that current is not equal to zero , thus we obtain magnetic field around those copper bars as some current flowing through it.which opposes rmf and starts rotating.
in slip rings: in rotor there will be a starred connection of copper conductors , the other ends of this conductors are connected to slip rings upon which the brushes are mounted.
these brushes are connected to 3 phase supply via rheostat(used to increase resistance). when the motor is ON due to resistance provided by rheostat the motor produces much torques initially after some time the brushes are umounted from sliprings , and all these 3 sliprings are short circuited by means of metal collar. thus this is now same as squirrel cage i.m
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what is cascade speed control device?and how this device control the speed of motors?
What is kirchoff ’s current law (kcl)?
what can be the causes of capacitor start motor having a higher current that its actual
what is the minimum pay scale for electrical engineer (building construction)in kuwait? plz revert back with yrs of experience & pay scale respectively.
what is th basic difference between a d latch time line and a d flip flop time line???
What are gain margin and phase margin?
what is lumped and distributed elements?
new 90kw motor installed so how I purchased cable ,fuse,etc please give me technic for cable selected why always capacitor delta connection
1.What will be stored in online ups EPROM IC?
I completed my BE EEE degree 2006 .... which license should i apply .... ?????
why capacitive load is not used in routine life????any reason is there ??????
WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?
what is alluminium arm in ab conductors
When distance between two pulleys is not fixed, the tension of belt is adjusted by a) driver shaft b) driven shaft c) adjustment screw d) belt
66kv under ground cable how to layaing in ground any special case two ckt r runing