a induction motar has 30-35% exciting current at no load but in transformer it is only 2-3% ofbrated current why any reason?

1 Answers   century,

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what is V=4.44FBN, THIS 4.44 ONLY U GOT the voltage in term sof 11, 22 etc this 4.44 u will get from form factor which has a value of 1.11

1 Answers  

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To generate electricity , what is the speed of rotor?

1 Answers   JEC,

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if a.c supply is given to the motor,, what happen?

0 Answers   Bhel, L&T, MSEB,

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Differenciate between circuit wiring and sub main wiring with illustrations

0 Answers   MU,

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If i have 200 test cases and we have to execute but we don't have time to execute all testcases.within 1 hour we have to execute that testcases and prepare the test report.so how i have to resolve this problem? is there is any technique in the testing.

3 Answers   Stag Computers,

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what will happen if u run induction motor beyond its rated speed

13 Answers   Adani, BARC, Bescom,

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in general it is observed in power stations, the tertiary winding is used in higher rating Y-Y auto transformer but not in Y-Y power transformer. is the tertiary winding is compulsory then why it is not using in power transformer 

0 Answers  

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what is back trip and re-trip in protection schemes? why these two? define me the exact function of these two?

1 Answers   Siemens,

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Our Alternator nameplate specifies a power factor of 0.8. When the Alternator is on light load, the bus bar voltage rises to 11240 volts, whereas the standard value is 10500 volts. Is it ok to increase the power factor to 0.85 or 0.9. I am afraid because the power factor on the name plate is only 0.8 ?

3 Answers   Escube,

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whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?

0 Answers   DAE,

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How to calculate cable sizes in sq.mm. with using motor KW? Any formula there?

18 Answers   Aswani Properties, BRB Cable, Construction, Hitachi, L&T, Microcool Systems, Nahar, NWPF, Reliance, Renault, Saha Bright Polytech, SGH, TATA, Techno Electric and Engineering, TFIL, Thermax,

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