Answer / prabhat

Without the use of electronic components, try these.
1. First analyse what u want from/ or what u are
controlling from control ckt.
2. Clearly understand the meaning of,
A) Contractor - main contact, Aux. contact & coil
B) Relays - Same as above
C) Isolator -
D) NO/ NC/ On dealy, OFF delay.
Combination of these components basically makes a control
circuitary.

Answer / pswin

You should attend the PLC courses.

Answer / rajesh

Dear sir
First a fall just see the drawing and study the
symbel what as to be used again see the drawing at this
time you can get som idea if you can able you just go at
panal board and see visually what are the wire and farool no

While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

---

can u describe the method used for protection of transmission line.

0 Answers   IBM,

---

How do the synchronizing lamps indicate the correctness of phase sequence between existing and incoming alternators?

0 Answers   VECL,

---

plz send me HPCL apptitude paper.. maulik_elect@yahoo.co.in

0 Answers   HPCL,

---

what are the difference between PLC and embedded

0 Answers  

---

what is the max load on a 10 mva transformer & plz define it with its formula

0 Answers  

---

How to use earthing on shipments.

0 Answers  

---

What is harmonics. How does it get generated and means to arrest harmonics

8 Answers   Airtel,

---

if any leas acid battery is having low or high sp.gravity taen what will be effect of battery and why

4 Answers   CFCL,

---

why voltage drop will occurs in 3 phase line?

12 Answers   ABB, Servo,

---

how can i change the rotation of the AC single phase induction motor and show me by diagram

0 Answers  

---

AMF (auto mains failure) control for DG sets at home.

1 Answers  

---