ELTR 1070 Syllabus

Subject Code

ELTR

Course Number

1070

Course Title

AC Theory

Prerequisites

Provisional admission; ELTR 1040

Corequisites

Terms Offered

Credit Hours

Course Description

This course introduces the theory and application of alternating sine wave voltage and current. Topics include magnetism, AC wave generation, AC test equipment, inductance, capacitance, and transformer basics.

Course Outcomes

Electrical Safety-Related Work Practices (NFPA 70E)

  •  Discuss the application of safety-related work practices.
  •  Discuss the general requirements for electrical safety-related work practices.
  •  Discuss stabling an electrically safe working condition.
  •  Identify work involving electrical hazards.

Magnetic Induction

  • Discuss electromagnetic induction.
  • List factors that determine the amount and polarity of an induced voltage.
  • Discuss Lenz's law.
  • Discuss an exponential curve.
  • List devices used to help prevent induced voltage spikes.

Basic Trigonometry and Vectors

  • Define a right triangle.
  • Discuss the Pythagorean theorem.
  • Solve problems contacting right triangles using the Pythagorean theorem.
  • Solve problems containing right triangles using the sines, cosines, and tangents.
  • Define a vector.
  • Discuss vector addition.

Alternating Current

  • Discuss the difference between DC and AC voltages.
  • Compute the instantaneous values of voltage and current for a sine wave.
  • Compute the peak, RMS, and average values of voltage and current.
  • Discuss the phase relationship of voltage and current in a purely resistive circuit.

Inductance in AC Circuits

  • Discuss the properties of inductance in an AC Circuit.
  • Discuss inductive reactance.
  • Calculate values of inductance and inductive reactance.
  • Discuss the relationship of voltage and current in a purely inductive circuit.
  • Calculate the value for inductors connected in series or parallel.
  • Discuss reactive power (VARs).
  • Determine the Q of a coil.

Resistive-Inductive Series Circuits

  • Discuss the relationship of resistance and inductance in an AC series circuit.
  • Define power factor.
  • Define the terms voltage, current, resistance, impedance, inductance, inductive reactance, apparent power, true power, reactive power, power factor, phase angle, and frequency.
  • Identify the graphical symbol that represents voltage, current, resistance, impedance, inductance, inductive reactance, apparent power, true power, reactive power, power factor, phase angle. and frequency.
  • Calculate the circuit values in a resistive-inductive series circuit.
  • Calculate the phase angle for current and voltage in a resistive-inductive series circuit.
  • Connect resistive-inductive circuits and make measurements with test instruments.

Resistive-Inductive Parallel Circuits

  • Discuss the operation of a parallel circuit containing resistance and inductance.
  • Calculate the circuit values in a resistive-inductive parallel circuit.
  • Connect a resistive-inductive parallel circuit and measure the circuit values with test instruments.

Capacitors

  • List the three factors that determine the capacitance of a capacitor.
  • Discuss the electrostatic charge.
  • Discuss the differences between nonpolarized and polarized capacitors.
  • Calculate the circuit values for series and parallel connections of capacitors.
  • Calculate an resistive-capacitive time constant.

Capacitance in AC Circuits

  • Explain why current appears to flow through a capacitor when it is connected to an AC circuit.
  • Discuss Capacitive reactance.
  • Calculate the value of capacitive reactance in an AC circuit.
  • Calculate the value of capacitance in an AC circuit.
  • Discuss the relationship of voltage and current in a pure capacitive circuit.

Resistive Capacitive Series Circuits

  • Discuss the relationship of resistance and capacitance in an AC series circuit.
  • Define the terms capacitance, capacitive reactance.
  • Calculate values of voltage, current, apparent power, true power, reactive power, impedance, resistance, and power factor in a resistive-capacitive series circuit.
  • Calculate the phase angle for current and voltage in a resistive-capacitive series circuit.
  • Connect a resistive-capacitive series circuit and measure circuit values using test instruments.

Resistive-Capacitive Parallel Circuits

  • Discuss the operation of resistive-capacitive parallel circuit.
  • Calculate the circuit values of a resistive-capacitive parallel circuit.
  • Connect a resistive-capacitive parallel circuit and measure circuit values using test instruments.

Resistive-Inductive-Capacitive Series Circuits

  • Discuss AC circuits that contain resistance, inductance, and capacitance connected in series.
  • Calculate values of impedance, inductance, capacitance, power, reactive power, voltage drop across components, power factor, and phase angle of voltage and current.
  • Connect a series circuit containing resistance, inductance, and capacitance, and measure circuit values using test instruments.
  • Discuss series resonant circuits.

Resistive-Inductive-Capacitive Parallel Circuits

  • Discuss parallel circuits that contain resistance, inductance, and capacitance.
  • Connect a parallel circuit containing resistance, inductance, and capacitance and measure circuit values using test instruments.
  • Discuss the operation of a parallel resonant circuit.
  • Calculate power factor correction for an AC circuit.

Single-Phase Transformers

  • Discuss the different types of single-phase transformers.
  • Calculate values of voltage, current, and turns ratios for single-phase transformers using formulas.
  • Calculate single-phase transformer values using the turns ratio.
  • Connect a single-phase transformer and test the output voltages of different winding configurations.
  • Discuss polarity markings on a schematic diagram.
  • Connect and test a single-phase transformer to determine polarity.