Answer / md. zakir hosen

We know P=VICOSф.
Here, P=1H.P=746W,V=415v,I=1.85amp
Now putting this value on the equation simply we get the PF.
746=415*1.85*COSф
746
=>COSф=----------=0.9716 and it must be lagging.
415*1.85


More info: Earn and Learn pls visit

http://a2zengineering.blogspot.com/

Answer / prakash veer singh

Dear Zakir husan
What is 1092 in your equation .
That we know that
p=root3 v*i*cos phi
1 h.p =746 watts = 1.732*415*1.86*cos phi
cos phi= 746/1.732*415*1.86
= 0.55 and pf leging.

Answer / aaaa

its depend on phase no of the motor.(3-phase , single phase)

Answer / vishnu

here P=1H.P=746w,
I=1.86,
V=415V

FORMULA P=1.732*V*I*COS phi
cos phi=746/1.732*415*1.86

cos phi=0.55

Answer / jagjeet

Dear Satish
The power factor dependent on the loading factor of the
induction motor , You can measure the Line current and apply
the formula suggested by Zakir or you can refer the
characteristics charts of Motor to find out the Power Factor.

Answer / shakus

@Sakthish_kumaar

Please mention whether the motor is single phase or three
phase?
apply for single phase>>

P=VIcosØ

and Apply for three phase>>

P=√3VIcosØ

on a three-winding transformer relationship delta-delta-star, on third winding why the relationship is a star? what are the advantages and disadvantages? Thank you and please help

0 Answers  

1. What is the difference between ac induction motor and ac synchronous motor?

11 Answers  

What is the criteria that generally follow by distribution licenses to fix contact demand of their industrial customers?

0 Answers  

what is wore of PLC ?

1 Answers  

what is the problem in manufacturing transformer with 0 degree phase displacement.???why alwasys go for DYn11 or DY5?Whys not DY0 i.e zero degree displacement between primary and secondary side vectors?

3 Answers   Bhel, dpdc, Prime Electrical,

If a three phased motor or not working phased change on poles so how to find which one red yallow & blue

1 Answers  

Why do you use an isolator on both sides of the circuit breaker? ( shortly answer)

2 Answers  

what factors to needed while selecting a MCB and MCCB

3 Answers  

what are the limitations to use 33kv ac in industries?

0 Answers  

what is the difference between KW and KWh?

9 Answers  

DG use Rating KVA why

1 Answers  

What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

0 Answers