Answer / anil

most induction motors are started in direct on line, but when large motors are started that way because of disturbance of voltage on supply lines due to high current . to control the starting current we the star delta connection using direct of line control circuit using connectors and timer to reduce the starting current

if 50hz transformer is required to be run on 50% frequency what needs to be done???????????

6 Answers   century,

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from which formula we select a capacitor rating?

0 Answers   CLG,

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Why we are use dol starter up to 10 hp

0 Answers  

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what is meant by leading or lagging power factor?like in capacitor power factor is leading and in inductor power factor is lagging

4 Answers  

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what is the maintain in ACB,VCB,MCB,MCCB breakers?

4 Answers   CTS,

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what is Harmonic effect?

2 Answers  

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what is the meaning of powerfactor

6 Answers   NTP,

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What is the difference between electric and electronic circuits?

11 Answers  

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As we know induction squirrel cage motor torque Directly praprortinal to applied voltage in star connection & delta also. If I connect 55KW Motor to DOL starter in load condition does motor withstand the load & what will be the current withdrawn ? motor will not fail ?

0 Answers  

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if we give 60 hz single phase supply to the transformer used in europe , than what will happen

0 Answers   Core Logic,

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what you mean ct ratio? why use 400/5a,200/5a,150/5a ?

1 Answers  

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In DC motor,the field MMF is given by NI.N-no.of field winding turns,I-excitation and both are constant.Then how could the main flux decreases due to armature reaction.

4 Answers   Bhel, IBM,

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