ASE A6 Test Prep – Electrical/Electronic Systems - Questions, Answers and Explanations

ASE A6 Test Prep – Electrical/Electronic Systems - Questions, Answers and Explanations Adding an additional path through which the current can flow has decreased the total resistance of the circuit. Each light drops 12 volts. An ohmmeter is being used to check a circuit for continuity. Technician A says an infinity or full scale reading on an ohmmeter indicates no continuity. Technician B says a zero reading on an ohmmeter indicates continuity. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Both technicians are right. An infinity reading indicates an open wire; a zero or low reading indicates a good connection. Neither of the low beam headlights on a vehicle will light but the high beams work normally. Technician A says the headlight thermal breaker could be faulty.Technician B says the dimmer switch may be faulty. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B The headlight switch and breaker would also affect the high beams. The dimmer switch would affect both low beam headlights. The front and rear turn signals on the left side of a vehicle are non-functional. Technician A says the turn signal flasher could be shorted to ground. Technician B says the hazard flasher could be shorted to ground. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Neither technician is right. The flasher or fuses would affect both right and left sides. The most likely cause is two bad bulbs, a defective turn signal switch or a problem in the wiring that is common to the front and rear on the left side of the vehicle. A circuit is wired in series. Technician A says the total of all voltage drops will equal the battery voltage. Technician B says the current flow through each part of the circuit Is the same. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Both technicians are right. Current remains constant throughout a circuit, and the total of all voltage drops always equals the source voltage provided. A circuit is wired in parallel. Technician A says that total circuit current is divided across each load. Technician B says that voltage is the same at each load. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Both technicians are right. Current will be divided across the loads and the voltage is the same at each load. Technician A says that a self-resetting circuit breaker is sometimes used in a taillight circuit. Technician B says that the colored insulation of a fusible link indicates the amount of circuit protection available. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Resetting circuit breakers are not used in taillight circuits. Fusible links are often identified by colored insulation- red, pink, brown, yellow, etc. The color indicates the amount of maximum circuit protection available. Technician A says that a test light is a good diagnostic tool for testing solid-state electronic circuits. Technician B says that an ohmmeter is a good diagnostic tool for testing voltage sources. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Neither technician is right. A test light may overload electrical circuits that contain solid-state components. Because an ohmmeter has its own battery, any circuit being tested should be disconnected from its voltage source. When performing soldering, the purpose of a soldering iron is to heat the: A. Flux B. Solder C. Conductors D. Heat shrink tubing Contrary to popular belief, the purpose of soldering iron is not to melt the solder itself, but rather to heat the parts being soldered. Technician A says that a digital ohmmeter should be manually set to "zero" after the switch is turned on. Technician B says that the resistance of a component should be checked while voltage is applied to the circuit. Who is right? A. Technician A only B. Technician B only C. Both A and B D. Neither A or B Neither technician is right. Technician A is wrong because digital ohmmeters do not need to be zeroed before use. Test lead continuity should be checked however, by touching the two ohmmeter leads together and watching for a zero reading on the meter. Technician B is wrong because an ohmmeter is used to check the resistance of a component or wire while there is no voltage applied to the circuit. Current flow from an