Second year final review (review second semester study guide as well)

AC Theory:
know all the units for various measurements:
	E - volts, I - amps, R - ohms, P (true power) - watts, apparent power - voltamps, reactive power - voltamps reactive,
	C (capacitance) - farads, L (inductance) - henries, X (reactance) - ohms, Z (impedance) - ohms, etc.

Be familiar with the formula sheet and add the following formulas to it:
	E=IX	E=IZ	PF=true power/apparent power	effective voltage(RMS)=peak voltage x .707


Be able to calculate unkown values for simple series, parallel and combo RL, RC, and RLC circuits:
	-see .pdf portion of studyguide for step by step examples
	-remeber that voltage is the reference value for parallel and current is the reference for series

Identify resistive, capacitive and inductive sine waves.
	-see .pdf 

know the power triangle
	-see .pdf

frequency
	-frequency is the number of full cycles of the sine wave per second, measured in hertz
	-know how frequency affects current:
		-if circuit is move inductive then increasing frequency will increase impedance and lower current
		-if circuit is more capacitive, increasing frequency will decrease impedance and increase current
		-if circuit is purely resistive then frequency will have no effect on current
	-know how to tune a circuit towards resonance
		-increasing frequency will create more inductive reactance if the circuit is too capacitive
		-lowering frequency will create more capacitive reactance to counter an excess of induction
		-when inductive reactance = capacitive reactance, the circuit has reached the frequency of resonance
	-know the effects of frequency on phase angle (theta)
		-if circuit is inductive higher frequency increases phase angle
		-if circuit is capacitive lower frequency increases phase angle



Filters:
Be able to identify the output graphs for band pass, band reject, high pass, low pass filters


Power factor correction:
Highly inductive or capacitive loads are inefficient, know the basics of correcting these inefficiencies
	-if a circuit has an excess of inductive reactance, an equal amount of capacitive reactance must be added 
	 in parallel with the inductive load.
	-this works because inductive reactance and capacitive reactance are 180 degrees out of phase with each other.




Transformers:
know the basics of how transformers work (turns ratio, primary v. secondary voltage, primary v. secondary current, etc.)
Be familiar with the two configurations of 3 phase transformers (delta and wye)
	-Delta is a parallel configuration
		-voltage is the reference (winding voltage = line voltage)
		-current is split between 2 possible paths (winding current = line current  / 1.73)
	-Wye is a series configuration
		-current is the reference (winding current = line current)
		-voltage is divided by 2 seperate coils (winding voltage = line voltage / 1.73)
	-be able to identify transformer hookup diagrams (i.e. delta high/ wye low) --we will review this in class again.



Blue prints:
Know the books definitions of specifications, scheduals, change orders, addendums and be able to tell them apart.

Review the basic symbols used by electricians (switches, 3 way switches, various types of outlets, lights etc)

Know the various types of prints used (plot plan, floor plan, elevations, details, etc.), and what types of information
you would find on each one.




Misc. questions that will be on the test:(look them up and memorize them)

How many vice presidential districts are in the IBEW?

What is the official purpose of the COMET program?

What is the first step in overcomming an addiction?

What is the name of the paralmentary rules used to govern union meetings?




There are 75 regular questions, and 25 code questions.  We will also cover the books pipe bending terminology in class.