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.

why we earth only one side of a power cable. And which side is advisable to earth.

1 Answers  

---

What is the diffrece between ACB & MCCB

8 Answers  

---

Difference between SFU & FSU with advantantages & drawback?

1 Answers  

---

What is ment by KVAR and what are the advantage&dis- advantages of KVAR

2 Answers  

---

what do u mean by bus bar?

6 Answers  

---

what will happen if the secondary of current transformer kept open....

11 Answers  

---

what should be the resistance valve of healthy earth pit

1 Answers   Reddy Labs,

---

What is the name of transformer oil?

18 Answers  

---

Why we did not feel electric shock in electric train?

1 Answers   NTPC,

---

What is the si unit

2 Answers  

---

how the CT and PT is connected in the circuit during testing of transformer explain with diagram

0 Answers   KESC,

---

In my 3 phase 4 wire electrical system N to earth voltage is 0.08 is it ok What is standard for it ?

1 Answers   Kay Bee,

---