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Problem Set Ac & DC

This document contains 13 problems related to AC and DC circuit analysis: 1. The problems cover topics like determining peak voltage from rms voltage, average value from peak voltage, impedance and current in series RLC circuits, phase angles, power calculations, and applying theorems like Thevenin's and Norton's to solve for currents and voltages. 2. Problems 1-10 deal with AC circuits involving calculations of rms, peak and average values, impedances, phase angles, and currents and voltages in series and parallel RLC circuits. 3. Problems 11-13 involve using concepts like Thevenin's and Norton's theorems to solve DC circuits for unknown currents and voltages.

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Paolo Steven Polintan
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585 views3 pages

Problem Set Ac & DC

This document contains 13 problems related to AC and DC circuit analysis: 1. The problems cover topics like determining peak voltage from rms voltage, average value from peak voltage, impedance and current in series RLC circuits, phase angles, power calculations, and applying theorems like Thevenin's and Norton's to solve for currents and voltages. 2. Problems 1-10 deal with AC circuits involving calculations of rms, peak and average values, impedances, phase angles, and currents and voltages in series and parallel RLC circuits. 3. Problems 11-13 involve using concepts like Thevenin's and Norton's theorems to solve DC circuits for unknown currents and voltages.

Uploaded by

Paolo Steven Polintan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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PROBLEM SET

AC CIRCUITS
1. If an ac signal has an rms voltage of 75 V, what is the peak
voltage?
2. If an ac signal has a peak voltage of 55V, what is the average
value?
3. For a sine wave whose peak value is 1000 volts, what is the
effective (Eeff) value in volts?
4. A sinusoidal current varies in amplitude from 0 to 120 amperes. If
the same current is expressed by the equation:
i =Imsin and 1= 60; 2=270
What are the values of the current at 1 and 2? What are the rms
values of the current?
5. A series RL circuit with resistance of 40 ohms and a 10 mH
inductor is connected to a power source of 450 volts with 1000
Hz frequency. Determine the current flowing and the phase angle.
6. A series circuit contains a resistance of 150 ohms and a 10
microfarad capacitor and connected to a 110-volt source. If the
source frequency is 120 Hz, find the impedance of the circuit, the
phase between E and I and the current flowing through R.
7. A series circuit is composed of a resistance of 200 ohms, inductive
reactance of 800 ohms, inductive reactance of 400 ohms,
capacitive reactance of 250 ohms and capacitive reactance of 500
ohms and is connected to an AC source of 300 volts. Determine
the total impedance, the total current and the phase angle.
8. A resistance of 40 ohms and an inductance of 0.08 H are
connected in parallel across a 100-volt and 60 Hz power supply.
Determine the total current and the phase angle.
9. The capacitor and resistor are connected in parallel across a
source voltage of 600-V/1000 Hz. If the resistance is 50 ohms and
the capacitance is 120 pF, what is the total current drawn from
the source and the phase relation between total current and the
applied voltage?
10.
An RC components with values R = 10 and C = 8 F are
connected in parallel across a 10-volt, 1000 hertz power source,
find the phase angle of the circuit.
11.
A resistance of 5000 ohms, an inductance of 6 H and a
capacitance of 1 microfarad are all connected in parallel. At the
frequency of 300 Hz, find the phase angle and absolute value of
impedance.
12.
A current of 2 amperes flows in a circuit consisting of a
resistance of 10 ohms, inductive reactance of 48 ohms and a
capacitive reactance of 20 ohms connected in series. The
frequency is 25 Hz. Determine the power of the circuit and the
power factor.

DC Circuits

1. Find the unknown currents

2. Use Kirchhoffs laws to determine the currents flowing in each branch of the
network

3. For the bridge network shown in the figure determine the currents in each of the
resistors.

4.

Use Thevenins theorem to find the current flowing in the 10 resistor for the circuit shown

5. Use Nortons theorem to determine the current flowing in the 10 resistance for the
circuit

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