The following seven problems refer to a series LCR circuit driven by an AC power supply with frequency 50 Hz and R.M.S. emf of 120 V. The circuit contains a capacitor with C = 15 mF, an inductor with L = 1.5 H., and a resistor with R = 150 W, all connected in series. i ww R L ll
The following seven problems refer to a series LCR circuit driven by an AC power supply with frequency 50 Hz and R.M.S. emf of 120 V. The circuit contains a capacitor with C = 15 mF, an inductor with L = 1.5 H., and a resistor with R = 150 W, all connected in series. i ww R L ll
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Transcribed Image Text:The following seven problems refer to a series LCR circuit driven by an AC power supply
with frequency 50 Hz and R.M.S. emf of 120 V. The circuit contains a capacitor with C =
15 mF, an inductor with L = 1.5 H., and a resistor with R = 150 W, all connected in series.
i
ww
R
L
ll
Transcribed Image Text:Question 25
For the LCR circuit defined above, find the average (R.M.S.) current. Select the closest
answer.
0.8 A
1.2 A
0.4 A
0.46 A
14 A
Question 26
The average (RMS) power dissipated in the circuit is closest to
41.5 Watts
24.2 Watts
19.2 Watts
18 Watts
21 Watts
D
Question 27
The phase angle for the circuit is closest to
+72°
-900
+90°
-180
+600
Question 28
What is the power factor of the circuit? Select the closest answer.
0.5
O 0.6
0.7
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