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.

Ns=120f/p. what is 120?

10 Answers   IAR, L&T, Ramada, Toshiba,

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In an electrical power supply,why if neutral phase of a 3phase supply fail over current occur but if it's single phase supply neutral phase fail low current occur? 

1 Answers  

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what is earthing/

3 Answers   B.Tech, CPCL, Mobiserv,

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What is the importance of setting TSM & PSM?

2 Answers  

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how many parameters can integrate with fire alarm basically ?

0 Answers   Schneider,

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we are having 110 Kv,250mA Electrostatic precipitators for coal fired boilers. what will be static voltage and current after discharge and what time it will remain before earthing?

0 Answers   Siemens,

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how can alculate the apfc panel rating?

3 Answers  

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Why is the starting current high in dc motor?

0 Answers  

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why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

0 Answers   HCL,

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Which is capital of Indian State Tripura ?

13 Answers   RRB,

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how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 Answers  

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I want to know in body earthing which material can be use either copper plate or GI plate please guide us which is best option.

3 Answers  

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