what is slip ring induction motor? How it works?
it is a type of induction motors ,it is used where ,there we need high torque.it have a moulded slipring in it's rotors , and it's rotor shorted through the resistance box, and we can verying it's speed.it is used mostly in cranes in a industrial areas.
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Where is servomechanism used?
BSNL TTA EXAM QUESTION
What is Earthing?
Why dont we get shock while testing for voltage with a line tester? How the bulb inside the tester glows while testing with tester coz we are totaly isolated from earth or we are not giving close path for the current to flow?
What is the winding resistsnce need to be in a 1000kva, 11kv/415v transformer, between ht winding to lt winding, ht winding to earth, lt winding to earth.?
How can we save electrical cost i.e switchgear, wiring, conduiting etc in a room?
What is the polarization index value ? (Pi value)and simple definition of polarization index ?
What is the reasonable voltage between Neutral & Earth of an electrical system for good earthing?
is synchrnous pannel is need for two eqal rating transformers to run in parallel
What is a variable speed motor?
why inductancce of armature inductance of dc machines is neglected?
What is the theoretical capacity of a channel in each of the following cases? i) Bandwidth: 20KHz SNR(dB) =40 ii) Bandwidth: 200KHz SNR(dB) =06 iii) Bandwidth: 1MHz SNR(dB) =20