help please

[derek13]

Q/

a 230v contactor has 7 amps flowing through its contacts if the power factor is 0.92 calculate the REAL and APPARENT power ???

anybody help with this please?? cheers

 

[seajayess]

Apparent power 230 x 7 = 1610 Watts

Actual power 1610 x 0.92 = 1481.2 Watts

Hope that helps as you can see actual power is not as high as apparent power the lower the power factor the more power is wasted CJS

 

[derek13]

thanks v much for reply i got that right thank god ha ha tryna get my head round formulas for up coming exams one i cant get to grips with is this:

a 32ohm resistor is connected in series with inductive reactance of 35ohms calculate the impedance of the circuit??

struggling where to start with this one gone a bit brain dead i think , any help with this please????? thanks v much!!!Guiness Drink

 

[Andy™]

thanks v much for reply i got that right thank god ha ha tryna get my head round formulas for up coming exams one i cant get to grips with is this:a 32ohm resistor is connected in series with inductive reactance of 35ohms calculate the impedance of the circuit??

struggling where to start with this one gone a bit brain dead i think , any help with this please????? thanks v much!!!Guiness Drink

Z = [square root] R1

 

[derek13]

awesome cheers!!!1

 

[jl-heating]

Gulp !!!!! is this even english language?

 

[Andy™]

Gulp !!!!! is this even english language?

its quantum physics/rocket science - too technical for plumbers

 

[a1]