Consider an R L C circuit with R = 130 , L = 515 mH , and C = 0.270 F . Part B F
ID: 1442488 • Letter: C
Question
Consider an RLC circuit with R = 130 , L = 515 mH , and C = 0.270 F .
Part B
Find the impedance of this circuit if the frequency has the value found in part A, but the capacitance is increased to 0.295 F .
Part C
What is the power factor for the situation described in part B?
PLEASE HELP
Consider an RLC circuit with R = 130 , L = 515 mH , and C = 0.270 F .
Part B
Find the impedance of this circuit if the frequency has the value found in part A, but the capacitance is increased to 0.295 F .
Z = ?Part C
What is the power factor for the situation described in part B?
cos =PLEASE HELP
Explanation / Answer
B.
Z = sqrt(R^2 + (XL - XC)^2)
R = 130 ohm
L = 515 mH
C = 0.295 uF
XL = wL = 2*pi*f*L
XC = 1/wC = 1/2*pi*f*C
given that f = 427 Hz
Z = sqrt(130^2 + (6.28*515*10^-3*427 - 1/(6.28*0.295*10^-6*427)^2))
Z = 174.81 ohm
Comment below the value of frequency found in A part and I will do the calculation for you.
B.
Cos phi = R/Z
Cos phi = 130/174.81 = 0.743
Cos phi = 0.743