ECC Test 2 Review PDF

Tab 1  ECC Test 2 Review 1.In a graphical analysis of Ohm's Law the X-Axis is considered to be the? Independent variable 2In a graphical analysis of Ohm's Law the quantity that varies as a result of changes in the first quantity is called the ___ and is plott...

Tab 1  ECC Test 2 Review 1.In a graphical analysis of Ohm's Law the X-Axis is considered to be the? Independent variable 2In a graphical analysis of Ohm's Law the quantity that varies as a result of changes in the first quantity is called the ___ and is plotted on the Y-Axis? Dependent variable 3.What is Ohms used to measure? Resistance 4.what of the following types of items use series circuits? Strings lights with simple dividers and flashlights 5. Total circuit resistance in a series circuit is equal to ___? Sum of all resistances 6.Total voltage across a series circuit is equal to the sum of the individual? Voltage drops 7.How would I calculate power in a series circuit? Power Total? Voltage X Current ,,,,,Sum of individual Powers ,,,,Vt X It = Pt 8.When troubleshooting you complete the 4th step of the process and eliminate working functions by? Localizing the faulty functions 9.Which test will help you identify intermittent or loose connections? Wiggle or tug Test 10.Which of the following is a mechanical part that is subject to wear? Relay 11.Six step troubleshooting procedure One core principle is that faults need to be isolated and be____? Reproducible 12.During Symptom elaboration what should be obtained of the trouble in a system during this step? Detailed description of the fault 13.What is a malfunction of a device or a system that occurs at intervals that are usually irregular ? Intermittent Fault 14.An open means the flow of current is? Interrupted 15.what are the purposes of Kirchhoff's Law current entering a junction is considered to be positive negative 1 or 0? Positive 16.Kirchoff's Law for Voltage states that the sum of voltage drops in a series circuit is equal to the circuits___? Source Voltage 17.what is defined as having more than one current path next to a common voltage source? Parallel Circuit 18.When utilizing variation analysis to troubleshoot a malfunctioning circuit if the resistance decreases what should the current do? Increase 19.When determining which of the functional units of a multi unit piece of equipment is actually at fault you should measure resistance voltage current or ohms? Resistance 20.When you are testing individual components in a circuit a parallel resistor or diode of a similar value can cause it to appear? Good 21.Changes in one branch of a parallel circuit will affect? All branches 22.using variation analysis to analyse a malfunctioning circuit for change in conditions in voltage or current or ___? Resistance 23.A circuit containing elements from most series and parallel circuits is also referred to as? Combination circuit 24. Wire circuits and schematics are rarely laid out in what kind of form ? Simple Parallel branches where current divides are also called? Junctions 25.In general what circuit malfunction type will cause an increase in current regardless of circuit involved? Short circuit 26.Which of the following is not a common cause of a fault in a component or a circuit? Lack of current 27.What is a circuit with a break that prevents current flow? Open circuit 28.What testing equipment is most commonly used in circuit malfunctions? Multimeter 29.In which Step of the six step electronic troubleshooting method is used to determine what circuit or circuits was at fault? Localizing faulty functions of a circuit. 30.What is considered to be high voltage equipment? Above 30V 31.Symptom recognition is the act of doing what to a problem when it appears ? Identifying it 32.Why are intermittent faults difficult to diagnose ? Fault can only be identified when the fault is actually occuring 33.What is accomplished by systematically checking each probable faulty unit until the actual fault is found ? Localizing the fault 34.Which troubleshooting step uses the information obtained in two of the other steps to make an educated estimate of where trouble might be located? Fault estimation 35.If the first check does not isolate the fault what should the information gained from the test be used for? Which possible faulty unit to check next 36. Electromagnetism is the generation of a magnetic field around a ? Coil or current carrying conductor 37.What does the strength or intensity of a coil's magnetic field depend on? Number of turns on wire 38. 100 cycles per second are equal to ? 100 hertz 39.Time it takes to complete one cycle is defined as ? Period of the wave form 40.When two sine waves are precisely in step with one another they are said to be ? In phase 41.Ohms law for current is ? I=E/R 42.Control of electron beams present a visible pattern of graphical data onto a fluorescent screen of what basic section of the oscilloscope? CRT 43.Which oscilloscopes section adjust the characteristics of displayed sweep? Sweep circuitry 44.Quantities including temperature pressure speeds acceleration can be translated into what and viewed on an oscilloscope? Voltage 45. Which oscilloscope input can accept two independent signals at the same time and split on the CRT screen? Dual channel input 46.What type of oscilloscope probes are used by amplitude signals Intinuation probes 47.Which control allows the user to adjust the stability of an oscilloscope display? Trigger 48.Function generator is a piece of test equipment used to produce a signal at a desired frequency and? Amplitude 49.What type of waveform does a function generator use? All the above 50.What function generator soft key is to change a side wave or a square wave ? Shave tree button (can't hear) 51.Which function generator front panel control modulates amplitude and frequency? Mod Switch 52.Which section of the button display is information on the current trigger configuration shown? Trigger (T) 53.Which electronic testing tool may be used to trace a function generator test signal through equipment ? Oscilloscope 54.What is the characteristic of an electrical circuit conductor that causes starting, stopping, or change in value of current? Conductance 55.The flux linkage is the strongest between conductive portions that are? Closed 56.In addition to copper loss, how many iron losses does an iron core conductor have? 2 57.A self-induced electric mode of force (EMF) is induced by relative motion between a conductor and what type of field? Magnetic 58.What is the name given to the heating of an inductive iron core by circulating current and are induced by the magnetic field around the coil? Eddy current loss 59.When the frequency of an AC current increases, the inductive reactance does what? Increases 60.What is the ability to collect and store energy in an electrostatic field called? Capacitance 61.After 1 time constant (TC), approximately how much of the full charge will the capacitor have? 63% 62.Compared to the sum of the values of the combined reactance and resistance, the value of impedance is? Greater 63.What is the name given to power loss from a capacitor due to the leakage of current through the dielectric component? Dielectric leakage 64.When the frequency of an alternating current increases, capacitive reactance will? Decrease 65.Total resistance to current flow in a reactive circuit is called? Impedance 66.How many time constants does it take to fully charge or discharge a capacitor? 5 67.Current is still directly proportional to voltage and inversely proportional to? Resistance 68.What are the 2 classes of capacitors? Fixed and Variable 69.Kirchhoff’s 2nd law states the sum of all voltages around any closed loop in a circuit must equal? Zero 70.What is the formula used for calculating the average values for voltage and current? Imax=Emax/R 71.What is the characteristic of an electrical circuit that opposes the starting, stopping, or changing to the value of current? Inductance 72.In practice, circuits containing reactance, also contain? Resistance 73.What formula would you use to determine the total capacitance of capacitors in an AC circuit? Ct=C1+C2+C3… 74.What is a direct function of the plate area? Capacitance 75.What letter is used to represent inductance in a formula? L 76.In the six-step troubleshooting procedure, which step is symptom elaboration? 2 77.In the six-step troubleshooting procedure, which step is localizing trouble to the circuit? 5 78.In the six-step troubleshooting procedure, which step is symptom recognition? 1 79.In the six-step troubleshooting procedure, which step is listing probable faulty functions? 3 80.What letter is used to represent voltage? E 81.What polarity is used when tracing a circuit? Sine the assumed current has after passing through the component 82.Which letter is used to identify inductors? L 83.The resistance of a series circuit is equal to the sum of the individual Resistor values 84.Which formula would you use to find the value of a resistor? E/I 85.What is an example of a loose circuit conductor? Cable lugs 86.How many troubleshooting steps are there? 6 87.When testing an open capacitor with a digital multimeter, the multimeter will show some numbers for a second and then immediately it will show? Out Of Limits/ OL 88.What does OL stand for? Out Of Limits 89.The key indication for a changed value is when the current is present through all components and output resonates frequency, or _____ may change? Voltage 90.Which step of the six-step troubleshooting procedure applies to equipment with more than 1 functional area or unit? Listing probably faulty functions Tab 2