Answer / j.karthik(cce)

PIR means Pre insertion resistor... This PIR is connects
parallel to the main interruptor..This is used to limit the
current to be interrupted.

7. Why AC motors, AC bulbs etc... are donot operated by DC signals? and Why DC motors, DC bulbs etc... are donot operated by AC signals?

2 Answers   Bhel,

---

WHY WE CAN GENERATE POWER IN 3PHASE MODE ONLY NOT IN 4 OR 5 PHASE?

8 Answers  

---

what about SAP/MRP regarding manufacturing of electric motors and all drives?

0 Answers  

---

what material is used in capaciter

0 Answers  

---

why we use choke in tubelights nad other lighting fixer

1 Answers  

---

In a panel 2500A ACB is the incoming breaker then what is the size of the bus bar?

1 Answers  

---

what is booster? and how it is connected in a circuit?

0 Answers   APTransco,

---

what is the reason for connecting hvdc monopolar line with negative conductors

0 Answers  

---

what the purpose of transmited high voltage in over head lines

3 Answers   NCC,

---

simple way to find busbar sizes??

1 Answers   SPAC,

---

What is a captive power plant?

2 Answers  

---

How can we calculate ac current from the given DC current when AC voltage is given?

0 Answers  

---