Answer / ramky

cosine of the angle b/w voltage and current is nothing but
the power factor. it is very use full in a.c systems , by
using this we can measure active power

Answer / masoom raza

its cosine of angle between voltage and current of the given system.
its present in both ac and dc circuit but in case of dc its always 1 as angle between voltage and current in this case is always 0 degree.so generally we don't talk about pf in dc.
but in case of ac it varies from 0 to 1.

Answer / jai ganesh

Mr.Pillay
In capacitive load the power factor is leading.
In inductive load the power factor is lagging.

Answer / monika hassan.

Power factor is the ratio of true power or watts to
apparent power or volt amps

Answer / pillay

to make a long storey short Ramky & monika have answered.It is present only in AC circuits.
it is used for the calculation of real power from apparent power.Gives you an idea how capacitive or inductive is a load.

How do you select a cable size(cu and Al) for a particular load

6 Answers   Pepsi,

---

Where we use 30mA , 100mA & 300mA RCCB ?

3 Answers   BEL,

---

out of all machines which have highest efficiency and why?

2 Answers  

---

ROC converges if pole and zero lies inside a) origin b) z=1 c) pole d) zero ? Explanation please? if ROC does not converges then?

0 Answers   CCP,

---

how to give earthing in ships?

1 Answers  

---

---

What are the different types of LT Cables?

0 Answers   Nabard,

---

how we can do the insulation on secondary of ct explain and so that tan delta will within limit

0 Answers  

---

if i conncet ct with ct ratio of 600/5 to an energy meter having ct ratio of 100/5, the reading show by the meter will correct, if wrong is there any method to calculate correct value with shown value, if yes please state it.....

2 Answers  

---

What is the purpose of Rotor earth fault relay and How to test the Rotor earth fault relay in generators and What is the procedure?.

1 Answers  

---

What is meant by stator? What is meant by rotor?

0 Answers  

---

what happend when 230v dc motor we supplied a 23v ac supply

3 Answers   Hero MotoCorp, RRB,

---

Difference between divercity and power factor

1 Answers  

---