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Apply right angle trigonometry to circuit analysis
Assessment Strategies
Oral, Written or Graphic Assessment
Written Objective Test
Apprentice Course Worksheet
Criteria
apprentice draws a right angle and names the three sides
apprentice writes three forms of the Pythagorean theorem
apprentice draws vectors used to represent the resistive, inductive, and capacitive value
apprentice determine the sine, cosine, and tangent for a variety of angles
apprentice solves for unknown values in a triangle
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Examine characteristics of alternating current
Assessment Strategies
Oral, Written or Graphic Assessment
Written Objective Test
Apprentice Course Worksheet
Criteria
apprentice defines terms related to AC
apprentice notes the significance and effect of the frequency
apprentice describes why AC is the preferred method of power distribution
apprentice identifies the characteristics of alternating current
apprentice calculates effective, peak, and average values
apprentice identifies the losses associated with alternating current
apprentice relates the term "phase" to AC current
apprentice calculates total resistance, total current, total power, the power factor, and the phase angle
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Use AC measuring instruments
Assessment Strategies
Oral, Written or Graphic Assessment
Lab/Shop activity
Apprentice Course Worksheet
Criteria
apprentice uses a clamp-on ammeter
apprentice uses a multimeter
apprentice adjustments an Oscilloscope
apprentice uses an Oscilloscope to make accurate measurements on a circuit
apprentice determines and records the level of a given voltage
apprentice determines a given frequency
apprentice connects the scope in the "dual trace mode" and measures the phase angle of two given voltages
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Analyze resistive-inductive series circuits
Assessment Strategies
Oral, Written or Graphic Assessment
Lab/Shop activity
Apprentice Course Worksheet
Criteria
apprentice defines an R-L series circuit
apprentice lists the characteristics of an R-L series circuit
apprentice describes the relationship of resistance and inductive reactance
apprentice defines impedance
apprentice calculates the values of voltage, current, voltage drops, impedance, true power, apparent power, and power factor for an R-L circuit
apprentice draws examples of impedance and power triangles for circuits using vectors
apprentice builds examples of R-L series circuits given specifications
apprentice records information on the circuit in a lab report
lab report includes calculations of the expected circuit values for the circuit
lab report includes measures of the actual values of the circuit
lab report includes the identification of any differences
lab report includes justifications for the differences
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Analyze resistance-capacitive series circuits
Assessment Strategies
Oral, Written or Graphic Assessment
Lab/Shop activity
Apprentice Course Worksheet
Criteria
apprentice defines an R-C series circuit
apprentice lists the characteristics of an R-C series circuit
apprentice describes the relationship of resistance and capacitive reactance
apprentice defines impedance
apprentice calculates the values of impedance of a series R-C circuit from given values of resistance and reactance
apprentice calculates the values of voltage, current, voltage drops, impedance, true power, apparent power, and power factor for R-C circuits
apprentice draws examples of impedance and power triangles for circuits using vectors
apprentice builds examples of R-C series circuits given specifications
apprentice records information on the circuit in a lab report
lab report includes calculations of the expected circuit values for the circuit
lab report includes measures of the actual values of the circuit
lab report includes the identification of any differences
lab report includes justifications for the differences
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Analyze parallel reactive circuits
Assessment Strategies
Oral, Written or Graphic Assessment
Lab/Shop activity
Apprentice Course Worksheet
Criteria
apprentice describes the phase relationship of voltage and current within parallel R-L and R-C circuits
apprentice calculates the values of voltage, current, impedance, power, and power factor for R-L and R-C circuits
apprentice computes the phase angles of given circuits and relates their values to the efficiencies of the circuits
apprentice draws examples of right triangles that represent the electrical relationships of given circuits using vectors
apprentice describes the effect that changing the frequency of a parallel reactive circuit will have on the values of a given reactive circuit
apprentice builds examples of R-L and R-C parallel circuits given specifications
apprentice records information on the circuit in a lab report
lab report includes calculations of the expected circuit values for the circuit
lab report includes measures of the actual values of the circuit
lab report includes the identification of any differences
lab report includes justifications for the differences
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Compare three-phase systems
Assessment Strategies
Oral, Written or Graphic Assessment
Lab/Shop activity
Apprentice Course Worksheet
Criteria
apprentice describes the advantages of a three phase power systems
apprentice describes the phase relationship of three phase power systems
apprentice draws an example of a three-phase wye connected generator or transformer
apprentice describes the significance of the value 1.73 to three-phase calculations
apprentice calculates the phase-to-phase and phase-to-line voltage values of a given wye system
apprentice calculates the phase-to-phase and phase-to-line current values of a given wye system
apprentice draws an example of a three phase delta connected generator or transformer
apprentice calculates the phase-to-phase and phase-to-line voltage values of a delta system
apprentice calculates the phase-to-phase and phase-to-line current values of a delta system
apprentice performs load calculation, voltage and current values, for a given three phase system where the source is connected in wye and the load is connected in wye
apprentice performs load calculation, voltage and current values, for a given three phase system where the source is connected in wye and the load is connected in delta
apprentice performs load calculation, voltage and current values, for a given three phase system where the source is connected in delta and the load is connected in wye
apprentice performs load calculation, voltage and current values, for a given three phase system where the source is connected in delta and the load is connected in delta
apprentice calculates the size (in CKVAR), necessary to correct the power factor of a three phase circuit