lab 7
-
Upload
mert-agalday -
Category
Documents
-
view
213 -
download
0
description
Transcript of lab 7
LAB REPORT
CIRCUIT THEORY II
EXPERIMENT 7
PARALLEL R, L,C CIRCUITS
MERT AĞALDAY
120403007
EEE202
18.05.2015
Data Tables
RC Circuit
Theory Experimental % Deviation
XC -1.59kj -1.6kj 0,63
Z Magnitude 846.1 846 0,011
Z θ -32.2 -32.1 0.31
Theory Mag
Theory θ Exp Mag Exp Delay Exp θ% Dev Mag
% Dev θ
iC 6.3m 90 6.1m 2.40us 89.8 -2.85 -111m
iR 10m 0 9.0m 2.40us 0 -11 0
iin 11.8m 32.2 11.2m 2.40us 31.8 -3.38m-
931.6m
RL Circuit
Theory Experimental % Deviation
XL 628.3j 627 j 0.2
Z Magnitude 531.59 530 j 0.3
Z θ 57 56.5 j 0.87
Theory Mag
Theory θ Exp Mag Exp Delay Exp θ% Dev Mag
% Dev θ
iL 15.9m -90 -15.5m 100us -89.5 -1.88 -222m
iR 10m 0 9.5m 100us 0 -5 0
iin 18.75m -57.8 18.5m 100us -58.5 -4 519m
RLC Circuit
Theory Experimental % Deviation
XC -1.59ki -1.60ki 0.6
XL 628.3i 627 i 0.2
Z Magnitude 719.97 720 0,004
Z θ -43.87 -44.1 0.52
Table 7.5
Theory Mag
Theory θ Exp Mag Exp Delay Exp θ% Dev Mag
% Dev θ
iC 6.3m 90 6.1 100us 89.8 -2.85 -111m
iL 15.9m -90 -15.5 100us -89.8 -1.18 -222m
iR 10m 0 9.5m 100us 0 -6 0
iin 13.8m 43.8 14.1m 100us 44.1 1.49 456.6m
Table 7.6
Questions
1. What is the phase relationship between R, L, and C components in a parallel AC circuit ?
2. Based on measurements, does Kirchhoff’s Current Law apply to the three tested circuits (show work) ?
- KCL was applied on three tested circuits.
- RC circuit : iT = iR + iC
- RL circuit : iT = iR + iL
- RLC circuit : iT = iR + iL + iC
3. In general, how would the phasor diagram of Figure 7.1 change if the frequency was raised ?
- If the frequency was raised in RC, phase angle would be increasing.
IC
f = 1 kHz
f = 500 Hz
IR
4. In general, how would the phasor diagram of Figure 7.2 change if the frequency was lowered ?
- If the frequency was lowered in RL, phase angle would be increasing.