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
- 36203 Views
- Appco, snsce, I also Faced
- E-Mail Answers
Answer Posted / shareef
P= SQRT(3) * V * I * P.F
P.F= Cosin(AN)
AN= angle between V&I
If you are talking about P.F that means you are talking
about loads.
1- If P.F=1 that means the load is resistive load (its the
ideal case, the consumed power is active power only: MW)
2- If P.F=0 that means the load is inductive or capacitive
-(If the power is inductive that means the load will
consume power: +MVAR)
-(If the power is capacitive that means the load will
deliver power to the system: -MVAR)
In electrical systems the loads are resistive and reactive
that means the P.F value will be between 0 & 1
Examples
* If P.F = 0.9, its good for electrical system because it
is nearset the ideal case (the Voltage drop is less & the
voltage at end bus is within the limits)
* If P.F = 0.6, its bad for electrical system (the Voltage
drop is high & the voltage at end bus is out oflimits), in
this case we need to install capacitor bank to improve the
P.F and the voltage at end bus
Note. capacitor bank will deliver/give MVAR to the
electrical system
| Is This Answer Correct ? | 3 Yes | 6 No |
Post New Answer View All Answers
if we have a industrial load of 400 kilowatts with 415 volt AC then how much total harmonic distortion (thd%) should be acceptable for steady power system.
WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC
Give two basic speed control scheme of dc shunt motor?
clarify types of motor operated valves and advantages
What is industrial plc
Define cuttoff frequency?
Hi, This is Laila. I am selected for syndicate bank interview. Could you please share your views and the questions asked if you have faced the interview My email id is laila_honey09@yahoo.com Please send as fast as u can.Thank You Thanks... Laila.
What happened when capacitor connect series in ac circuit?
What are the main parts of central chiller plant? Explain the function of each stage.
Explain Even and Odd signals?
How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance
The Q-facr o of a coil given as wL/R. what will be shape of Q versus frequency graph.
what types of electrical & mechanical test conducted in switchyard?
What is quadrantal symmetry?
How do apply electrical 'c'license......pls advice
