Answer / cae

Ladder logic is one of the basic programming language in plc, In general we use electrical wires to do the control circuit of any equipment by connecting stop, start, timers or contactors etc..to control the output. on the same way if we want to control the motor action by PLC, we use ladder logic which is written in plc programme between two vertical lines called phase & neutral or bus bar. where we draw the lines by inserting NC, NO contacts by joining timers or counters or output coils which means a motor or any load which u want to control it.

Is reverse power relay of generator operate due to voltage variation problem? please clearify.

1 Answers   Birla,

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phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

3 Answers   Areva, Kim Yew,

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Please define ampere?

0 Answers  

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boiler is running in rankine cycle and deisel generator is....?

0 Answers   century,

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when it is possible kvrah lead & fundamental kwh be equal in electonic trivector meters (3 ph)

0 Answers  

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Difference between earthing & grounding.?

0 Answers   Nitco,

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what is the differencce inn series and cascade connection??

0 Answers  

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what is the cause of voltage dipp or swell in the transmission lines?

0 Answers  

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can we identify the direction of power flow in transmission line by after only looking the tower

7 Answers   TNEB Tamil Nadu Electricity Board,

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different types of electrical cable?

1 Answers   Green Power,

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Why different types of connection in transformers are used? (star/star,star/delta,delta/star,delta/delta)Why we are only taking in consideration of star/delta type transformers? if only star/delta is good in practice where doses other type of transformers are used? Note: i want to know place of using different types of transformers other than Star/delta type with brief description.

1 Answers   Electrical Tech,

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What is meant by reverse polarity and how it can be fixed?

0 Answers  

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