The answers, make it to 4-decimal places 1. The admittance of a network is (0.05– j0.08) S. Determine the values of resistance andreactance 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 mHinductance. 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 andnegligible 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 inthe circuit, (d) the power factor of the circuit, (e) the power absorbed by the circuit, (f) thevalue of a power factor correction capacitor to produce a power factor of unity and (g) thevalue 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 totalimpedance, (b) the supply current, (e) the apparent power, (d) the reactive power, (e) thecircuit power factor, (f) the capacitance of the capacitor to be connected in parallel withthe network to improve the power factor to 0.90 lagging, if the supply frequency is 50 Hz.42

Admittance- The admittance is reciprocal of impedance. The unit of admittance is Mho.…

Answered: 1. The admittance of a network is…

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.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter26: Three-phase Circuits

Section: Chapter Questions

Problem 3PA: You are an electrician working in an industrial plant. A 30-hp three-phase induction motor has a...

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The answers, make it to 4-decimal places

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.
42

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