Auto Final Exam Questions and Answers Already Passed

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Auto Final Exam Questions and Answers Already Passed Technician A says a load tester can be used to check the condition of a vehicles battery. Technician B says a load tester can be used to check t ... he condition of a vehicle starting system. Who is right ✔✔Both a and B What tool measures voltage overtime? ✔✔Oscilloscope What tool is used when making a electrical test on a diesel engine ✔✔Luminosity timing meter Technician a says and inductive wire tracer generates a DC voltage in the wiring being tested. Technician B says and inductive wire tracer checks for high current load in the circuit. Who is right ✔✔Neither A nor B Wire gauges in an automobile generally range from gauge 0 to gauge ___? ✔✔30 To protect wiring before it gets to the fuse block a what is installed ✔✔Fuse link Technician a says wiring spices are normally designated on automotive wiring diagrams buy a dot. Technician B says a G can be used on some schematics to designate ground. Who is right? ✔✔Both a and B The unit mill, used to measure wire diameter, is equal to ✔✔0.001 A set of several wires wrapped in tape or enclosed in a plastic sheath is referred to as a what ✔✔Wire harness A late model auto Mobile may contain more than ___ wire to link electrical/electronic components ✔✔1/4 mile lowest resistance in ohms per 1000 feet ✔✔4 What is not important information conveyed by the wire code identification system ✔✔Wire length What is not a type of wiring diagram ✔✔Conductor resistance diagram What is not A possible cause of an open circuit ✔✔Closed switch A vehicle keeps blowing it's fuse to the lighting system. Technician a says that a larger amp fuse might correct the trouble quickly and easily. Technician B says that installing a larger fuse could cause a serious electrical fire. Who is right ✔✔B only More than one component in a particular automotive electric circuit is not working. Technician a starts testing the circuit at its load. Technician B starts testing the circuit at the power source. Who is right ✔✔B only What electrical/electronic component stores and electrical charge ✔✔Capacitor The current in an automotive tail light circuit needs to be checked. Technician a connects a conventional voltmeter in series with the circuit being tested. Technician B connects a conventional ammeter in parallel with the circuit being tested. Who is right ✔✔Neither a nor b When testing a switch which testing device would you use if the switch is removed or isolated from the circuit ✔✔Ohmmeter A hot wire short to the ground produces what ✔✔Extremely high current A resistance value of 1 kilohm is equal to how many ohms ✔✔1000 On an ohm meter display, the symbol (infinity) indicates ✔✔Infinite resistance Which testing device uses a signal generator to help locate a short ✔✔Inductive wire tracer A particular diode has a reading of infinite homes in both directions. Technician a says this indicates that the diode has an internal short. Technician B says this indicates the diode is in good condition. Who is right ✔✔A only A digital meter that automatically selects the appropriate scales is described as ✔✔Free ranging An ammeter is a device for directly measuring the resistance of a circuit ✔✔False Soldering is the best method of joining wires and terminals ✔✔True A multi meter with an inductive pick up does not have to touch the metal components of a circuit ✔✔True Modern load tester is required connecting the tester leads in series with the battery cable to measure current ✔✔False Printed circuits are most often used in instrument panels of vehicles ✔✔True Secondary wire refers to all vehicle circuit that are not part of the ignition system ✔✔False Wire size is determined by conductor diameter and does not include the insulation ✔✔True In the metric size system, wire diameter increases as the size number increases ✔✔True Powertrains of hybrid vehicles may operate at voltages of 1000V or more ✔✔False Soldering a crimp connector is considered a poor practice ✔✔False A remote ground has an extra wire running from the circuit to the ground ✔✔True Most circuit problems are caused by something very simple, such as a broken wire ✔✔True A conventional ammeter must be connected in parallel with the circuit ✔✔False Fluorescent shop lights with smaller diameter is well give off more light and use less power ✔✔True The trial and error approach is a good alternative when trying to find a simple electrical problem ✔✔False Circuit powered test lights are more commonly used than self powered test lights in auto repair ✔✔True You should avoid wiggling or moving the wires while you were testing for shorts or opens ✔✔False The effects of a grounded circuit are easily observed ✔✔False An AC volts setting on a multi meter might be used to check signals from a speed sensor ✔✔True To achieve an accurate reading, all ohmmeters must be recalibrated to zero before use ✔✔False If more than one circuit component does not work, start your test at the power source for the circuit ✔✔True Soldered connections have a _______ resistance ✔✔Low The quickest method of checking circuit continuity is the ✔✔Timing light A ____ Multi meter uses a needle or pointer to show electrical readings ✔✔Analog An ohmmeter is the most accurate way of checking a variable resistor ✔✔True A ____ is used to measure computer system operating voltage and interpret onboard trouble codes ✔✔Scan tool What wire has color-coded insulation for ease in tracing circuits ✔✔Primary For electrical work, only ___ solder should be used ✔✔Rosen core A _____ equals the area of a circle that has a 0.001 diameter ✔✔Circular mill A small diameter wire that carries a low DC voltage is called a what wire ✔✔Primary Heat shrink tubing is an alternative to ____ for covering exposed soldered connections ✔✔Electrical tape Before replacing a fusible link you must locate and repair the what that caused the link to open ✔✔Short A __ diagram shows how a battery current is fed two major components ✔✔Power distribution A __ allows several wires to make a common connection ✔✔Junction block Silver, tin silver, or tin copper solders are considered safer to use than tin ____ solder ✔✔Lead If a wire is fed through a metal body panel, a rubber what should be installed to protect the wire from abrasion ✔✔Grommet If a test light globes only on the feed side of a fuse the test light is what ✔✔Blown Before testing a capacitor, you should always ____ the capacitor and lead ✔✔Ground A ______ problem is when that occurs only under certain conditions ✔✔Intermittent The four basic types of circuit problems are open circuit, intermittent trouble, short circuit, and ✔✔High resistance To find the source of a problem quickly you should use what kind of approach ✔✔Systematic A carotid or burned a connector terminal is the most common cause of high circuit ✔✔Resistance A circuit power test light uses the circuit what to illuminate the tester bulb ✔✔Voltage A voltmeter can be used to check a resistors what ✔✔Voltage Randomly testing or replacing system parts until the problem is found is called the what approach ✔✔Trial and error A _____ is a voltmeter, ammeter, and ohmmeter combined in one housing ✔✔Multi meter Current is measured in units called ✔✔Amps An open switch should show ____ resistance ✔✔Infinite If a transistor tester is not available what can be ✔✔Ohmmeter Electrical what can be used to clean oil and grease from components before soldering ✔✔Solvent A good conductor has little or no white across it's terminals ✔✔Resistance Continuity tester ✔✔Test light Diesel engine test tool ✔✔Glow plug analyzer Alloy with a low melting point ✔✔Solder Electronic fuel injector tester ✔✔Noid light Multi meter ✔✔VOM [Show More]

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