Answer / marques, joão

The heating time constant is the time required for a
electric motor to attain 63.2% of it's final temperature
for a fixed power input.

Answer / shyams

It is the time required for the electric motor to attain 63.2% of the maximum temperature reached by that electric motor

Answer / adeel

It is the time required for the homogeneous thermal model of an electric motor to attain 63.2% of the steady state temperature for a fixed input and fixed load torque.

Hello Friends, How can we recognize the CT Star Point is S1 or S2 in case of Electro Mechanical Relays and what is meant by Restraining coil in relays and what is the purpose of that.. thank you in advance..

0 Answers   Siemens,

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findout of current?details 440v,3phase,085pf,hp-5

9 Answers  

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hi.. i am krishna. i've complide my diploma engg.in electrical.i applied many places for jobs.but i am always fear from written test.ican't get success in it. i think my basic engg. is weak..show me some idea please..!

5 Answers  

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who invented active elements? plz give me the complte details of active elements...

0 Answers  

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I NEED THE CABLE SIZE. I=800A AND P=315KW

2 Answers   ABC, Wipro,

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i am in need of AC SYNCHRONUS MOTOR 30KW. ANY ONE KNOWS THE MANUFACTURER OF SAME. ALSO MOSFET AC CONVERTER 20KVA CONT.OUTPUT.

0 Answers  

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what is the difference between brush & brushless dc motor explain its operation ?

1 Answers  

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what is the difference b/w neutral and ground?

4 Answers  

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how to caculate no load loss, load losses & impedance percentage in power or distribution transformers

4 Answers  

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how to calculate cable bending angle in a trench?

2 Answers   Eastern Cement,

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1.why motor rating in kw instead of KVA? 2.why alternators rating in KVA instead of KW?. 3.why transformer rating in KVA instead of KW?.

6 Answers  

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wil a dc motor run without a starter??

9 Answers   MRF,

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