Interested to Buy Any Domain ? << Click Here >> for more details...
what is the disadvantage of leading power factor...why can't
we use it (pf=0) for a long period of time?
- 10 Answers
- 35812 Views
- Appco, snsce, I also Faced
- E-Mail Answers
Answer Posted / guest
actually We cannot use the pf=0 , at least it should be some value. i mean to say,0.x to 1,
0.1 0.3 0.5 0.7 0.9 1 0.9 0.7 0.5 0.3 0.1
Lagging-> Unity <-Leading
Actually there are three power generated in an electrical system.
1. Active, real or true power which are expressed in kw = sqrt(3)*v*I*cosØ
2. Apparent power expressed in kva = sqrt(3)*v*I
3. Reactive Power expressed in kvar = sqrt(3)*v*I*sinØ
If cosØ(power Factor)=0.99 or -0.99, the sinØ will be same=0.14
If cosØ=-0.8 or 0.8, the sinØ will be same=0.6
If cosØ=-0.5 or 0.5, the sinØ will be same=0.86
According to the above values it is clear that if we go for lagging or leading pf the reactive power generated will be equal.
Kva= kw+kvar,
If use lagging or leading pf the real power (kw)we can use is same. So we must go for nearest value to unity pf to make Kva=kw(this condition satisfies only if Kvar=0 and pf=1) Finally more real power usage.
Then one of my friend told govt is advicing them to use leading power factor , its only because apart from the bulk consumers the domestic users wont use pf correction. In order to compensate we are said to use leading pf.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
nwhat are the main Components of servo motor?
what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?
in a solar power plant,we are going to step up the voltage 350V to 33kv, and to 132kv GSS. i want to ask that if it is possible that 315v/33kv is not possible because we also use 315v/11kv. or it should be 415v/33kv? is it effects generation or losses? the second question is-generation is depends on LV winding? or LV winding design for generation voltage?
how much leakage current is allowed in MC61A L&T make relay?
what rectifiers is and what are the types of rectifiers?
I WANT TO know WHICH WAY IS BETTER FOR CONNECTION BETWEEN POWER TRANSFORMER AND MAIN DISTRIBUTION PANEL. 1-IS BETTER WE USE CABLE? 2-IS BETTER WE USE BUS DUCT? my transformer rate power is 2500KVA
Name the types of motors used in vacuum cleaners, phonographic appliances, vending machines,refrigerators, rolling mills, lathes, power factor improvement and cranes.
sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.
Why power genaration in India is at 50HZ while America its 60HZ
According to conduit size which size wiring & how many wires can we provide wires in conduit & how can we select conduit size accordingly?
What is formula calculation size cable wire ?
xfhnchncv?
what is advertised hop count
what is PWM in IGBT and how it works for drive.?
This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?
