Answer / sachin kudachi

Pf is nothing but power factor. And it is defined as cosine of the angle between the applied voltage and current in any electrical circuit. So from this sentence or definition nobody can easily understand the actual concept of power factor.

Power factor plays an important part every were in an electrical circuit. Now considering an inductive load of a induction motor we say that , the pf is lagging and if the load is capacitive then we term pf to be leading.


An inductive load affects the power system supply voltage by lagging the pf drastically, so to improve the pf we can use capacitors, synchronous motors, or phase advances.

But the best way to deal with this stuff is to make limited use of inductive loads. So that we can reduce the losses quite easily.

Answer / siddeshwar

power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load.

The simplest way use a filter that passes current only at line frequency (50 or 60 Hz). The filter consists of capacitors or induction coils. This process is called PFC.
It means Power Factor Correction.

hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

0 Answers   Bhel, CVL,

---

How to parallel a alternator without using synchro scope or lamp methods

1 Answers   Ofer,

---

What is neutral and how to produced

1 Answers   L&T,

---

How I design capacitor bank for different load.7MW connected load.

3 Answers   Samtel,

---

Hello everyone, somebody knows what is a "surplice power" ? The hole phrase is: "This rating is appropriate for a generator set paralleled with an infinite bus e.g. a national electrical supply network or grid where the generator set is run at 100% load, 24 hours a day, 365 days a year and any surplice power is exported into the grid" Thanks in advance.

0 Answers  

---

---

how to calculate micom relay earth falt time and current sertting

0 Answers  

---

How can we step up ac and dc ?

1 Answers  

---

How can the direction of a three phase induction motor be reserved

4 Answers  

---

in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?

0 Answers  

---

Types of 132KV and 222 KV protection.

1 Answers  

---

how to arrange the generator protection ansi 48 (loss of phase?)

3 Answers  

---

Define the overload capacity of the motor.

3 Answers   Alstom, Maynilad,

---