Answer / remodeen

THERE ARE SKIN EFFECT, FERRANTI EFFECT.,CORONA LOSSES.,,

It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

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why exciter frequency 150 Hz ?

1 Answers   Siemens,

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how to select cable size?

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I have 1 KW, 3ph. 440v, 50 hz, cos(phi) .75, efficiency 75%(star delta connection)Motor. How to calculate line current & Phase current (1) Star connection (2) delta Connection

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Why a starter is used for a motor?

50 Answers   L&T, Nilachal Polytechnic,

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Can we Co-ordinate relay in Load Break switch?

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how to get 48 V DC I have ... 1. 12 volt power supply board 2. DC power supply ( max. 30 v) 3. 9 volt batteries ( 2 - not chargeble)

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This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?

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A T-T transformer can not be parallel with transformer A V-V B star-delta C star-star D delta-delta

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what is the principal of transformer?

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As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.

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what will happen if we give a dc supply to a transformer.?

10 Answers  

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