Answer / upenderb

Cogging:the tendency of locking of rotor with the stator poles when they have equal slots or any similarities between the slots is called cogging
Crawling:the tendency of rotor to rotate at a low speed equal to the seventh space harmonic i.e Ns/7 if there are considerable amount of harmonics is called crawling

Answer / kamalesh

cogging

if we convert kw into Ampers,which one formula use by us,pls tell me?

9 Answers   ABB, Essar,

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IN THE CASE OF AN ELCB, IF THERE IS ANY UNSTABILITY BETWEEN PHASE AND NEUTRAL IT MAY TRIP. BUT MY QUESTION IS WHEN A LOAD IS CONNECTED IN BETWEEN P AND N, THE LOAD CONSUMES SOME POWER AND THERE IS A DIFFERENCE IN NEUTRAL WITH RESPECT TO THE PHASE. THUS ACCORDING TO ME, THE ELCB WILL AUTOMATICALLY OPERATES WHEN EVER THE LOAD CONSUMES-- I KNOW IT IS WRONG. BUT THE SOLUTION IS?????????

1 Answers   KSEB,

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What is auto transformer?

28 Answers   ABC, Transformers and Electricals, US Consulate,

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what is multiplying factor of a energy meter connected with a CT ratio of 600/5 and voltage at 415 volts.

1 Answers  

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In CT,which terminal(s1,s2) need to be grounded?

2 Answers  

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why fuse amperes rating are specified ratings like 32amp & 64 amps?

2 Answers  

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Why relay connected R phase and B phase.?

1 Answers  

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what is advertised hop count

0 Answers  

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what is the maximum demand how it is defined

1 Answers  

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what is tha between elcb & rccb?

3 Answers   Essar,

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what is NANO TECHNOLOGY?

2 Answers  

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After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

0 Answers  

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