Answer / r.prabhu

powerfactor is a cosine angle between voltage and current.
In industries powerfactor maintained is most important one.

loads are three types 1.Resistive Load
2.Inductive Load
3.Capacitive Load

Inthis load Resistive load is Unity Powerfactor
Inductive load is Lagging powerfactor
Capacitive Load is Leading Powerfactor

PowerfactorImprovement:

1.Static Capacitor
2.Synchronous condensor
3.Phase Advansor

Answer / ravi

power factor is the ratio of real power to apparent power

generally p.f must be 0.95

Answer / rk

we are maintaing the power factor between 0.95 to 0.98.
the most economical power factor is 0.96.
if your pf is below 0.9, electrical board authorities will
impose a penalty.

Answer / nitesh tiwari

0.9 to 0.95

Answer / aziz_raghib2002

0.9 less than that penality

Answer / h.s. raveesh

Maintaining Unity powerfactor is impossible in industries
or in other places. but research is going on for sucessful
use of unity powerfactor

Answer / selvan

Power factor is ratio of real power to apparant power.In
industries maitain the powerfactor is important one.But not
maintain the powerfactor in unity, Loads varied form time
to time.In industries induction motors and tubelights
mostly used. This are inductive loads,this loads create
lagging powerfactor.So to improve the powerfactor by using
static capacitors,syncronous condensor and phase advanser.

Answer / christopher

power factor should be 0.90 to 0.99,should not be more than
1 (unity power factor)

Answer / vinothbabu.k

THE BETTER POWER FACTOR MAINTAINED IS 0.95 TO 0.85,IF BELOW
0.85 THE ELEC BOARD WILL PUT PENALTY,IF WE MAINTAINED ABOVE
0.95 THE BOARD WILL GIVE U THE INSENTIVE FOR THAT.

Answer / n

0.9

when we decide to use soft starter drive or vfd drive in mcc to operate apump?

0 Answers  

What is Instantaneous Earth fault relay,how will work

0 Answers  

what are the safety in transformer,diesel generator,ups, chiller plant,h.t. , L.t. , sewage treatment plant(stp),water treatment plant(wtp), fire. plz ans. me in detail if you know any of the mention above. i urgently need

2 Answers   Claris Lifesciences, EFS,

why is used for starters for staring motors?

6 Answers   Amrapali, L&T,

Why PT burnts?

2 Answers  

can any one suggest websites having study maetrials for the electrical students?

1 Answers  

Explain mechanical rotational system?

0 Answers  

what is the formula of starting current of 3phase and 1 phase motor???

0 Answers  

how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

2 Answers   Divis Laboratories,

what will happen if dc motor given ac supply

11 Answers   Mahaveer,

what are all the preventive maintainance carried out in DG?

1 Answers   TATA,

How we can calc. the Backup time of a battery Bank???

6 Answers   Emerson,