ASE A6 practice test.Question and Answers, Exams of Nursing

Download ASE A6 practice test.Question and Answers and more Exams Nursing in PDF only on Docsity! ASE A6 practice test 2. An air bag system is being serviced. Tech A says to disconnect the yellow SRS connectors at the front of the vehicle. Tech B says to disconnect and isolate the negative battery cable. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- Always disconnect the ne the negative battery cable and wrap with tape so contract cannot be made. Follow the specific vehicle's disarming instructions, as some SRS system can retain back up power for an additional period of time. 3. Which of these should be used when soldering electrical wiring connections? A. Rosin Core Flux B. Acid core Flux C. Sulfur Core Flux D. none of the above. - A- for best results and less corrosion at the solder point, a rosin core flux should be used. 4. When testing computer controlled systems, a digital multi-meter should be used with an input impedance of at least: A. 10k ohms B. 100k ohms C. 1 megohm D.10 megohms - D- For maximum protection to the computer controlled system of any electronic circuit, it is best to use at least a 10 megohm impedance digital multimeter. 5. When troubleshooting a slow drain on the battery, which of these diagnostic tools should be used? A. Ohmeter B. ammeter C. voltmeter D. Test light - B- always use an ammeter of a low amperage amp clamp with your DMM to troubleshoot a slow drain in an electrical circuit> 6. The condition of a lead-acid battery is being checked. Tech A says to use a galvanometer.. Tech B says to use a capacitive battery tester. A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- A galvanometer is an analog type voltmeter. OEMs almost universally recommend the use of a non intrusive conductive capacitive type battery tester. 7. While testing a starting circuit on a 5.7 V8 engine, the Tech finds that the engine cranks slowly. The starter current draw is 90 amps, and the battery voltage while cranking is 11 volts. What should the Tech Do next? A. Check for voltage drop of the starter motor circuit. B. Test the battery capacity. C. Replace the starter motor, as a short is indicated. D. Determine the condition of the engine. - A- if an engine cranks slowly and the starter current draw is only 90 amps and the voltage is as high as 11 volts, the tech should next check for excessive voltage drop in the starter motor circuit. 8. Tech A says that a noisy alternator could be caused by a bad diode. Tech B says that noisy alternator could be caused by a worn bearing. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - C- Both techs are correct, worn alternator bearings and/or a bad alternator diode will cause the alternator to be noisy. 9. The analog ohmmeter needle does not move when connected to both sides of the rotor. This means the rotor winding is? A. Shorted B. Grounded C. Complete D. Open - D- if the circuit is open, as in the rotor winding shown, the Ohmmeter will show infinite resistance or infinity, and the needle will not move. 10. A vehicle's turn signals flash too slowly. tech A claims that the condition could be caused by a faulty flasher. Tech B says that a bulb may be the wrong type. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - C- Both techs are right. Both an improperly rated flasher and an incorrect wattage bulb can cause the turn signals to flash at incorrect intervals 11. Tech A says a short circuit to ground in a circuit will decrease resistance. Tech B says a short circuit will increase current flow. Who is right? A. Tech A only B. tech B only C. Both A and B D. Neither A or B - C- Both techs are right. A short to ground has little or no resistance. Current flow increases as resistance decreases. 13. When using a voltmeter to check for voltage in a circuit, the voltmeter should first be connected to check for: A. Source voltage. D. Neither A or B - D- neither tech is right. An analog meter with a low input resistance should only be used for non computer type circuits; a test light should never be used to diagnose sensor circuitry. 22. Tech A says that an in vehicle high rate discharge battery load test should always be performed if a 12 volt battery if its condition is in question. Tech B says that the battery should be discharged (loaded) at twice its ampere hour rating. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - D- Neither Tech is right. The high rate discharge (load) test of a battery is frowned upon by OEMs because of the likely hood of overstressing the alternator. If done with the battery removed (or disconnected) from the vehicle, the load applied should be three times the battery's ampere-hour rating or half of its CCA rating 23. all of the following are indications of an undercharged battery condition except: A. Slow cranking B. Dim headlights C. short light bulb life D. Low ammeter indication - C- Short light bulb life and a battery that continually needs water are indications of overcharging. 26. A rear defogger grid is being tested. Tech a says that when probing a grid line, the voltmeter should decrease its reading as the probe gets closer to the ground bus bar. Tech B says that if voltmeter read 12 volts at both ends of the grid line, there is an open in the grid line. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - A- If the test light remains bright at both ends of the grid lines, check for a loose ground. If there is an open in a grid line, the test light will not get dimmer and will stay the same brilliance until it reaches the other side of the open, at which point it will go out. 27. All of the following warning system lights use a grounding switch EXCEPT: A. oil pressure B. coolant temperature C. brake warning D. charging system - D- Charging system warning lights are controlled by charging voltage. The light bulb is not grounded at the instrument panel. Instead, current flows through the bulb and eventually grounds at the ground brush inside the alternator. When the alternator is charging, current through a wire to the opposite side of the bulb from the ignition switch. Because both sides of the bulb receive similar voltages, no current flows through the bulb and it doesn't light. 28. Tech A says that all power should be removed from a circuit before testing the circuit with an Ammeter. tech B says that all power should be removed from a circuit before testing the circuit with an ohmmeter. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- When using an ohmmeter, all power should be removed from the circuit to be tested. Power to the circuit is necessary when testing a circuit with an ammeter. 29. Tech A says that checked with an ohmmeter, a diode should have a high resistance in one direction only. Tech B says a diode permits the flow of electricity in both directions. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - A- A diode is a semiconductor that permits the flow of electricity in only one direction. When checking a diode with an ohmmeter, put the probes with red on the N- side; black goes on the P -side. Read the resistance, then reverse the leads. The diode should have a high resistance in one direction only. 30. All of the following could cause an inoperative starter EXCEPT: A. An improperly adjusted neutral safety switch B. Worn or missing flywheel ring gear teeth C. an open circuit between the solenoid and the ignition switch D. An open in the solenoid ground circuit. - B- worn or missing fly wheel ring gear teeth may not enable the starter to crank the engine, but would not cause the starter itself to be inoperative. All of the other choices could prevent the starter from operating. 31. A power seat system is extremely noisy when operated. All of the following could be the cause EXCEPT: A. faulty motor B. faulty transmission C. bad ground D. lack of lubricant - C- while a bad ground would disable the system or make the power seat operate slowly, it would not be the cause of noisy operation. 32. all of these are true statements regarding air bag supplemental restraint systems (SRS) EXCEPT: A. While removed from the vehicle, the airbag module should be stored with the cover pad facing up. B. safety glasses should be worn while servicing the air bag system. C. Only rosin core solder and heat shrink tubing should be used to repair air bag system wiring. D. Performing tests improperly or using the wrong equipment can result in accidental air bag deployment - C- air bag system wiring harnesses should not be repaired and only replaced. All of the other answers are true statements regarding air bag systems. 33. All of these are used when applying Ohm's law EXCEPT: A. amperes B. Watts C. Ohms D. voltage - B- the components of Ohm's Lay include Voltage (E), amperes (I) and ohms (R). 34. Tech A says that the rectifier bridge consisting of six diodes changes DC to AC voltage. Tech B says that an externally grounded alternator can be full fielded by grounding the field terminal. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- the rectifier bridge changes AC voltage to DC voltage. To test an externally grounded alternator, make sure all lights and accessories are off. Set the engine RPM to 1500-2000, now ground the field according to the manufacturer's recommended procedure. Full amperage output should be indicated if the alternator is in good condition and being driven properly. 35. Tech A says that voltage in a series circuit should be the same at all loads of the circuit. Tech B says that current in a series circuit is the sum of all the components current draw in a circuit. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - D- Neither tech is right. Total voltage in a series circuit is equal to the sum of the voltages across the separate resistances. Total current in a series circuit is the same throughout the circuit. 36. Another way of saying 75 millivolts is A. 0.075 volts B. 0.75 volts C. 7.5 volts D. 7.05 volts - A- 75 millivolts= 0.075 volts. 38. The fuse for a power window system is blown. Any of these could be the cause EXCEPT: A. wire is shorted to ground somewhere in the circuit. B. The window track is binding C. an open exists in the motors circuit. D. there is a short in the motor. - C- A fuse normally blows because of high current draw. A typical cause for a blown fuse is a short circuit. A short may occur in the wiring D. heat shrink tubing. - C- contrary to popular belief, the purpose of the soldering iron is not to melt the solder itself, but rather to heat the parts being soldered. 50. Tech A says that a digital ohmmeter should be manually set to "zero" after the switch is turned on. Tech B says that the resistance of a component should be checked while voltage is applied to the circuit. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - D- Neither tech is right. Tech 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 servo reading on the meter. Tech 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 outside voltage source, such as the vehicle battery, can damage the ohmmeter, so the circuit or component should be isolated from the vehicle electrical system before any testing is done. 51. Which of the following parts are sometimes used in a headlight switch? A. Fixed type B. variable rheostate type C. Variable potentiometer type D. Thermistor - B- A rheostat is a type of variable resistor that has two terminals. One terminal is connected to the fixed end of the resistor and the other is connected to a movable contact called a wiper. The resistance is varied by moving the position of the wiper on the resistor. thereby increasing or decreasing the electrical current. In a headlight switch, the knob is connected to the wiper and as the knob is turned, the instrument panel lights dim or brighten. The other type of variable resistor, the potentiometer, is a three terminal resistor. Potentiometers are commonly used in electronic engine control system sensors, such as the Throttle position sensor. 52. The interior lights in a vehicle stay on all the time. Tech A says that a door switch could be stuck. Tech B says there could be a short to ground in the circuit before one of the switches. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- A door switch is a grounding switch that completes the courtesy light circuit when a door is opened. When a door is opened. When the door is closed, the switch opens and the interior lights go out. It is more likely that a door switch would stick in the open position, so Tech A is wrong. Tech B is right because a short to ground in the circuit before the door switch would complete the circuit, making the lights stay on regardless of switch position. 53. A customer complains of static on the radio. Tech A says that loose or missing ground wires could be the cause. Tech B says that a defective antenna cable could be the cause. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - C- both techs are right. Poor sound quality, static and poor reception can be caused by a defective antenna, and antenna that is not grounded or connected properly or one that is not trimmed properly. Static can also be caused faulty ignition components, loose or missing ground wires and defective noise suppression devices. 54. A start/ Clutch interlock switch is being tested. Tech A says that, with the clutch pedal in the released position, the switch should have continuity when checked with an ohmmeter. Tech B says that, with the pedal depressed there should be voltage on both sides of the switch when checked with a voltmeter. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - B- the start/clutch interlock switch is open when the clutch pedal is in the released position, interrupting current flow in the starter circuit. Tech A is wrong because an open switch should have no continuity. When the clutch pedal is depressed, the switch closes, allowing current flow in the circuit. 56. Which of these would be the MOST useful for diagnosing an intermittent electrical problem? A. Oscilloscope B. Digital Voltmeter C. analog voltmeter D. logic probe - A- An oscilloscope is especially useful for diagnosing intermittent problems that might not be detected with a voltmeter. An analog voltmeter only displays average values and digital voltmeter samples voltage several times each second, but because an oscilloscope displays actual voltage it will show any momentary changes in the signal. These momentary changes can be caused by an intermittent open in the circuit or an intermittent short to power or ground. A test light does not indicate that 12 volts(or any particular amount of voltage) are present; it only indicates that some voltage is present. 57. the doors will not unlock on a vehicle using the remote keyless entry. Any of these could be the cause EXCEPT: A. a weak transmitter battery B. Interference from a stronger radio transmitter C. a bad passenger's door lock motor D. a blown circuit breaker - C- A faulty passenger's door lock motor would only affect that door and would not prevent other doors from opening with the remote keyless entry. All of the other choices could prevent all the doors from opening using keyless entry. 58. an electronic digital speedometer is stuck at zero. Tech A says that this could set a DTC. Tech B says that the vehicle speed sensor (VSS) could be the problem. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - C- Both techs are right. The Body control module (BCM) in some systems can make diagnostic checks of the electronic instrument cluster. The BCM monitors certain functions and will store a DTC if any are found to be outside of preprogrammed parameters. If the instrument cluster passes a self diagnostic test but the speedometer still remains at a certain speed or operates erratically, the problem is most likely in the VSS circuit. 61. A communications failure in the CAN system will set what type of DTC? A. B- Body B. C- Chassis C. P- Powertrain D. U- Network - D- the onboard diagnostic system will set a code beginning with the letter U 62. the brake light on the right side of a vehicle is dim compared with the one on the left. A tech tests the circuit with a voltmeter. With the brake pedal applied, the voltmeter negative lead connected to the negative battery terminal and the positive lead connected to the light socket, the voltmeter reading is 6.2 volts. What does the voltmeter reading indicate? A. an open ground circuit B. high resistance in the ground circuit C. low resistance in the ground circuit D. a bad light bulb - B- if there were an open ground circuit or the bulb was bad, the light would not work at all. Since the bulb is working, but not optimally, the tech is voltage drop testing. It the circuit was operating properly, the voltmeter reading would be 0.0 volts and no higher than 0.5 volts. This would mean that all the system voltage was being used by the light. The reading of 6.2 volts means that there is excessive resistance in the circuit, robbing the light of the necessary voltage needed for optimal illumination. The tech should continue checking the ground path until the voltmeter reading returns to normal and repair the problem connection. 63. the sunroof on a vehicle works intermittently. Tech A says there could be a poor wiring connection. Tech B says the panel could be binding in the rails. Who is right? A. Tech A only B. Tech B only C. Both A and B D. Neither A or B - C- both techs are right. Loose or corroded connections could cause an intermittent problem. The glass Binding in the rails could cause the electric motor to