Answer / madhusudhan

Maintaining unity power factor reduces losses in
distribution and in switchgear system not in actual power
consumption. If we maintain the power factor above 1 there
will be more losses in distribution transformers and
capacitors(which are used to increase PF). The capacitive
power reduces the inductance power in transformer thereby
increasing the losses.

Answer / glen

if power factor is one means it is a resistive load no
loses due to induction it is like a dc ckt

Answer / anusha reddy.m

If the power factor is unity that means the load is
resistive load and as the load with lpf wil draw high
current and load with high pf wil draw less current ,so we
have less losses and the pf can never bemore than 1 because
the cosine function varies a max. of 1.
Since load is resistive the output waveform is
purely a sinusoidal waveform without any diturbances

Answer / arun

Voltage at transformer terminal increases.You can utilise
full KVA of transformer.Electricity company asks to
maintain pf near to unity to reduce the losses in
transmission as the current reduces reducing the I2R loses.
This is why we get incentive on energy charges from supply
company.

Answer / provas

if power factor is above 1 then the load takes lees current
than rated.

what is the accaptable voltage between neutral to earth & How to reduse the resistance of earth in chemical earthing

4 Answers  

why is the vector group analysis done in transformer tests

28 Answers   K K Rao, Lloyds, Nicco Engineering Services Limited, Qatar Petroleums,

What is OT in a transformer, specify its function.

2 Answers  

which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

0 Answers  

Which is is best option for 33 kv line incomer.I am Desinging the panel for new projects and i would like to get Your opinion on this Vcb or sf6. Please help me with your replies. Thanks D p singh

6 Answers  

What is a formula to decide the size of the cable of the star delta motor ( From Contactor to the motor 2 runs )

4 Answers  

what is the burden?accuracy?Knee point voltage? what is the Alternator of PGM?

0 Answers   L&T,

What is Diff btw Fire Alarm & VESDA System???

0 Answers   EFY, Emerson,

why some harmonics are disturbing while the others not

1 Answers  

IF 3 NOS.OF HEATERS,3KW CAPACITY EACH,1 NO.HEATER CONNECTED IN R PHASE,1 IN Y PHASE AND 1 IN B PHASE.THEIR END POINTS CONNECTED IN STAR.IF I CONNECT THIS STAR POINT TO NEUTRAL OR DO NOT CONNECT TO NEUTRAL.WHAT WILL THE DIFFERENCE.

3 Answers  

It is used or not HT cable single core 630 sqmm in LT 3 phase capacitor bank which is used in PCC(power control center).

1 Answers  

what is SWA type of cable?????

4 Answers