Answer / kavitha.s

it is ratio of active power to apparent power is called
power factor. it is expressed as PF= KW/KVA

Answer / bhupendra

Power factor is cosine of angle b/w voltage & current.
Mathematically
Cosφ=Power/Voltage*Current)
Cosφ=R/Z
where R= Resistance
Z= Impedance

Answer / shaikh aijaz

it is the cosine angle between voltage and current,
and from impedance trangle it is the ratio between
rasistance and impedance,
cos0=r/z
it is also define as the ratio between active power and
apparent power.cos0=kw/kva

Answer / amit rajak

power factor is the cosine angle between voltage and current
which balances both these electrical quantities.It is
ideally considered as 0.8 for electrical equipments for its
maximum efficiency.if it is not properly regulated than
there may be rise of any one of the above parameters which
will definitely effect the efficiency


it can be properly regulated by using capacitors in
domestic installation systems

Answer / 98794

IT IS A COSINE ANGLE B/V APPLIED VOLTAGE AND CURRENT

why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

0 Answers  

---

how we can classify the circuit braker???????

1 Answers  

---

define reactive power?

3 Answers   Alstom, TATA, TCS,

---

How many types of Transformers are there?

8 Answers  

---

difference between temperature sensor and temperature switch

3 Answers   ABB,

---

---

What are the application of filter?

0 Answers  

---

In a star-star connected h.t transformer why we use NGR on the secondary (l.t)side.

3 Answers   Star, TATA,

---

what do w do when the output of generator is fluctuating?

0 Answers  

---

why do we need the body earth?

4 Answers  

---

phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

3 Answers   Areva, Kim Yew,

---

Why semi-conducting insulation is used in XLPE cables?

1 Answers  

---

what is ph test in coolent cheking

2 Answers  

---