Electrical Engineering - RLC Circuits and Resonance - Discussion
Discussion Forum : RLC Circuits and Resonance - General Questions (Q.No. 20)
20.
A 15 
resistor, an inductor with 8 inductive reactance, and a capacitor with 12 capacitive reactance are in parallel across an ac voltage source. The circuit impedance is
resistor, an inductor with 8 inductive reactance, and a capacitor with 12 capacitive reactance are in parallel across an ac voltage source. The circuit impedance is12.7
127
4,436
6,174
Discussion:
4 comments Page 1 of 1.
Muhammad Asif Latif said:
9 years ago
Z = 1/Y.
Y = √ ((1/R)2 + (1/XL - Xc)2).
Y = √ ((1/15)2 + (1/8 - 1/12)2) = 0.0786.
Z = 1/0.0786 = 12.7.
Y = √ ((1/R)2 + (1/XL - Xc)2).
Y = √ ((1/15)2 + (1/8 - 1/12)2) = 0.0786.
Z = 1/0.0786 = 12.7.
Appu said:
1 decade ago
Z = 1/sqrt((1/R)2+(1/XL-1/XC)2) for parallel circuit.
Danmarch said:
1 decade ago
Parallel : L & C
Z(lc) = 8i x (-12i)/(8i - 12i) = 24i
Parallel : Z(lc) & R
Ztotal = 24i x 15 / (24i + 15)
= 12.71, angle 32
Z(lc) = 8i x (-12i)/(8i - 12i) = 24i
Parallel : Z(lc) & R
Ztotal = 24i x 15 / (24i + 15)
= 12.71, angle 32
KIRTHIKUMAR RAO said:
1 decade ago
Data insufficient frequency didn't given.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers