what is the power factor?please tell me uses.
Answers were Sorted based on User's Feedback
Answer / ramky
cosine of the angle b/w voltage and current is nothing but
the power factor. it is very use full in a.c systems , by
using this we can measure active power
| Is This Answer Correct ? | 5 Yes | 1 No |
its cosine of angle between voltage and current of the given system.
its present in both ac and dc circuit but in case of dc its always 1 as angle between voltage and current in this case is always 0 degree.so generally we don't talk about pf in dc.
but in case of ac it varies from 0 to 1.
| Is This Answer Correct ? | 3 Yes | 0 No |
Mr.Pillay
In capacitive load the power factor is leading.
In inductive load the power factor is lagging.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / monika hassan.
Power factor is the ratio of true power or watts to
apparent power or volt amps
| Is This Answer Correct ? | 5 Yes | 3 No |
Answer / pillay
to make a long storey short Ramky & monika have answered.It is present only in AC circuits.
it is used for the calculation of real power from apparent power.Gives you an idea how capacitive or inductive is a load.
| Is This Answer Correct ? | 1 Yes | 1 No |
If a fan get trip and run in reverse direction due to system flow. Now in this condition during starting how can a VFD bring this negative speed to zero and later run in forward direction?
2 Answers Aditya Birla, Siemens,
draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it
what happens in the primary side of the transformer if transformer is short circuited first and increasing the resistance of the short circuit gradually?
why dc power can not be used in transformer?
33 Answers GE, Sail,
difference b/w timer and counter
What are the different modes of plc processor?
can we use 7volt DC BATTERY to run a 60watt motor by stepup? Give reason for your answer?
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
why CRGO material used in transformer?
Please tell me what is the difference between online UPS & OFF line UPS?
E.B sending end to receiving end 33kv ug cable laid 8Km,receiving end to ss1,ss2,ss3,ss4 all are Approx 800 Mtr,can go for 33KV to 430V or 33kv to 11kv in receiving end and 11kv to 430 near ss ,which one is good for technically and economically.
what happens if sf6ckt breaker gas pressure is high or low about the actual rating of gas pressure(5kg/cm2)
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)