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EE 212 - Assignment 5 - Solutions
1. A balanced 3-phase -connected load is energized by a 3-phase source that has line-to-line voltage of 208 V rms. and phase sequence abc. Per phase load impedance Z L = 12 + j16 ohms. Find the line and phase voltages a
September 5, 1999
TECHNICAL BULLETIN 007 The Per Unit System Overview Overview
The per unit system is based on the formula shown in Equation (1). (1)
per unit =
actual quantity base quantity
Using this method, all quantities are expressed as ratios of som
EE212 Passive AC Circuits
Lecture Notes 5 Click to edit Master subtitle style Three Phase Systems
9/26/10
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Balanced 3-Phase Systems Example: A balanced 3-phase, line-to-line voltage of 220 V is applied to a balanced 3-phase load. The 3-phase load consis
EE212 Passive AC Circuits
Lecture Notes 5a Click to edit Master subtitle style Three Phase Systems
9/26/10
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Three Phase Systems
9/26/10
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Three Phase Systems
Bulk pow e r g e n e r a t ion a n d t r a n sm ission sy st e m s a r e t hr e e ph a se ( 3
EE212 Passive AC Circuits
Lecture Notes 4 Click to edit Master subtitle style Per Unit System
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Per Unit (p.u.) System
Computations related to power systems involving machines and transformers are often carried out in p.u. system. In p.u. system, power s
EE212 Passive AC Circuits
Lecture Notes 3 Click to edit Master subtitle style Transformers
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Magnetic Circuit
What is the relationship between electric current, i, and magnetic flux, ? When do we have to consider it? What is the relationship between magn
EE 212 Passive AC Circuits
Lecture Notes 2b Click to edit Master subtitle style
9/28/10
Application of Thevenins Theorem
Thevenin's Theorem is specially useful in analyzing power systems and other circuits where one particular segment in the circuit (the
EE212PassiveACCircuits
LectureNotes2a
Circuit Analysis
When a circuit has more than one element, a circuit analysis is required to determine circuit parameters (v, i, power, etc.) in different parts of the circuit.
Circuit Theories: Ohms Law Superposition
EE 212 PASSIVE AC CIRCUITS
Instructor : Robert Gander Office: 2B37 Email: [email protected] Phone: 966-4729
Class Website: www.engr.usask.ca/classes/ee/212 Text Recommended: Introduction to Electric Circuits - 5th or Higher Edition - R.C. Dorf and J.A.
EE 212 Assignment 1 Solutions
Problem # 1 i. Voltage and Current Waveforms for the two circuit elements
ii. Time period, angular frequency, peak and RMS values of the current i2(t) Time period f = 60 Hz T = 1/f = 1/60 = 0.01667 seconds Angular Frequency =
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment 8 Instructor: R. Gander _ 1. P12-8.1 (Dorf and Svoboda 7th ed): The two-wattmeter method is used to determine the power drawn by a three-phase, 440-Vrms motor that is a Y-co
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment 7 Instructor: R. Gander _ 1. In class we looked at an unbalanced, 3-phase load that was Y-connected with no neutral return line. If we add the fourth, neutral line, what eff
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment 6 Instructor: R. Gander _ 1. A 3- transformer is rated for a total power of 300 kVA at 60 Hz. The transformer has two secondary windings. Winding #1 is Y-connected with a ra
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #5 Instructor: R. Gander _ 1. A small, step-down (120V/12V) transformer is short-circuit tested with the following results: Vprim = 6 V, Iprim = 4.0 A with a power reading o
University of Saskatchewan
Department of Electrical Engineering
EE 212
Assignment #4
Instructor: R. Gander
_
1. Calculate the reactive power from the capacitor in the circuit in Figure 1.
Figure 1
2. (P11.9-4 Dorf and Svoboda 7th edition p549) A circuit w
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #4 Instructor: R. Gander _
1. Calculate the reactive power from the capacitor in the circuit in Figure 1. -j2
2
4
100/00 V
+ -
j4
j3
2
j M = j2
Figure 1
2. (P11.9-4 Dorf
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #3 Instructor: R. Gander _ The following problems are taken from Introduction to Electric Circuits, 7th edition, R. C. Dorf and J. A. Svoboda 1. Write the mesh equations for
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #2 Instructor: R. Gander _ 1. An ac voltage of 120 Vrms at 60 Hz frequency is applied to the circuit shown in Figure 1. 10 + 120 V ~ B Figure 1 A 100 100 mH 50 mH
i. Calcula
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #1 Instructor: R. Gander _ 1. A sinusoidal voltage v(t) with 10-volts peak amplitude and 60-Hz frequency is applied to the circuit shown in Figure 1. The currents i1(t) and
EE212 - Assignment 3 Solutions
Problem #1 Thevenin equivalent at the terminals A-B of the following circuit. j5 10 -j5 50 900 + + 0 - 50 -90 -j5 j5 B Calculation of Thevenin Voltage, ETh: j5 10 -j5 50 900 + I1 Using Mesh Analysis, The equations are j5 2 =
EE 212 Assignment 1 Solutions
Problem # 1 i. Voltage and Current Waveforms for the two circuit elements
ii. Time period, angular frequency, peak and RMS values of the current i2(t) Time period f = 60 Hz T = 1/f = 1/60 = 0.01667 seconds Angular Frequency =
University of Saskatchewan Department of Electrical Engineering EE 212 Assignment #4 Instructor: R. Karki _
1. Calculate the reactive power from the capacitor in the circuit in Figure 1. -j2
2 + -
4
100/00 V
j4
j3
2
jM = j2
Figure 1
2. The resistances