Answer / n k singh

We can use AC also but additional shading ring must be
provided which gives sufficient phase displaced flux for
relay to be continuously on in negative half cycle of AC
supply also. In case of DC the flux is unipolar hence relay
will be on if DC is available.

the winding of Gen and Motor is star or in delta ??? and why

1 Answers  

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What is mean by retrofitting of machine tool please brief.

1 Answers  

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Does the motor power displayed on the Motor name plate is the mechnical power motor delivers or it is consumed power from the system?

2 Answers  

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what is your majour contributions in your present job

0 Answers   ESL,

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Can u Explain about the electronic trivector meter and the use of data converters in them?

0 Answers   Tricom,

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what is the difference between LT & HT Motors

11 Answers   L&T,

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what is the ideal earth resistance

11 Answers   Amit Enterprises, Enercon,

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which is dangerous AC or DC?

10 Answers  

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What is restricted earth fault protection ?

1 Answers  

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If any HVDC line is going with positive & negative(the negative usually have return path of current with earthing electrode). Now the question is if this HVDC earthed electrode which is using as return path and earthed any nearby 400kv or 220kv AC substation equipments. which will be the impact of this on AC substation & its equipment, how severe may be this and what should be the minimum distance require between HVDC earthed electrode and AC substation equipments? It's really an high engineering level question...Dare to answer and increase your knowledge.

0 Answers   MEIL,

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How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 Answers  

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I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

0 Answers  

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