1. The admittance of a network is (0.05– j0.08) S. Determine the values of resistance and reactance in the circuit if they are connected (a) in series, (b) in parallel.
1. The admittance of a network is (0.05– j0.08) S. Determine the values of resistance and reactance in the circuit if they are connected (a) in series, (b) in parallel.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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The answers, make it to 4-decimal places
Transcribed Image Text:1. The admittance of a network is (0.05– j0.08) S. Determine the values of resistance and
reactance in the circuit if they are connected (a) in series, (b) in parallel.
2. A 50 microfarad is connected in series with a coil having 50 ohms' resistance and 150 mH
inductance. The source voltage is 100 sin(wt-30 degrees) V. What is the maximum power?
3. A 20 non-reactive resistor is connected in series with a coil of inductance 80 mH and
negligible resistance. The combined circuit is connected to a 200 V, 50 Hz supply.
Calculate (a) the reactance of the coil, (b) the impedance of the circuit, (c) the current in
the circuit, (d) the power factor of the circuit, (e) the power absorbed by the circuit, (f) the
value of a power factor correction capacitor to produce a power factor of unity and (g) the
value of a power factor correction capacitor to produce a power factor of 0.9.
4. The network shown in Figure 1 has a total active power of 2253W. Determine (a) the total
impedance, (b) the supply current, (e) the apparent power, (d) the reactive power, (e) the
circuit power factor, (f) the capacitance of the capacitor to be connected in parallel with
the network to improve the power factor to 0.90 lagging, if the supply frequency is 50 Hz.
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