ASE A6 practice test
- ANS-Always disconnect negative battery terminal
A- 75 millivolts= 0.075 volts. - ANS-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- 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. - ANS-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 voltmeter should first be used to see if the circuit is getting power before doing
further tests. - ANS-13. When using a voltmeter to check for voltage in a circuit, the
voltmeter should first be connected to check for:
A. Source voltage.
B. excessive resistance
C. excessive amperage.
D. Good ground
A- adding an additional path through which the current can flow has decreased the total
resistance of the circuit. Each light drops 12 volts. - ANS-40. Two lights are connected
in parallel. An additional light is added, also wired in parallel. Tech A says the total
resistance will decrease. Tech B says the total Voltage will drop. Who is right?
A. Tech A only
B. tech B
C. Both A and B
D. Neither A or B
,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.
- ANS-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A- conventional sealed beams have all but been replaced by the other Types of
headlamps listed in this question. - ANS-71. all of these types of headlights are found
on todays vehicles EXCEPT for:
A. Conventional sealed beam headlamps.
B. Composite sealed beams headlamps.
C. Xenon headlamps.
D. LED headlamps.
A- for best results and less corrosion at the solder point, a rosin core flux should be
used. - ANS-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- 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. - ANS-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 horn sound is a weak tone, current is too low, and poor electrical connections may
be the culprit. If a fuse is blown, the horn will not sound at all. - ANS-39. a horn makes a
very weak sound. Tech A says a faulty power connection could be the cause. Tech B
says a faulty fuse 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
A- if the so called Green eye is not visible, the green tip of the built in hydrometer is not
floating high enough in the electrolyte to be visible. A fully charged battery will cause the
built in hydrometer to float to the top of the electrolyte and allow the green tip of it to be
seen. - ANS-14. When checking the green eye of a sealed maintenance free battery, no
color seen indicates that the battery is:
A. undercharged
B. charged properly.
C. Overcharged.
D. Damaged.
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. -
ANS-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- LED lights have no filament, so a visual inspection will not determine whether the
light is good. If an LED light assembly does not illuminate, check the light for an open
circuit, inspect the wiring and make sure there is power to the light, just as you would for
a conventional incandescent light. - ANS-69. When checking exterior LED lights on a
vehicle, all of these can be checked EXCEPT:
A. Condition of filament
B. continuity
C. power circuit
D. Ground circuit
- ANS-Always disconnect negative battery terminal
A- 75 millivolts= 0.075 volts. - ANS-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- 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. - ANS-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 voltmeter should first be used to see if the circuit is getting power before doing
further tests. - ANS-13. When using a voltmeter to check for voltage in a circuit, the
voltmeter should first be connected to check for:
A. Source voltage.
B. excessive resistance
C. excessive amperage.
D. Good ground
A- adding an additional path through which the current can flow has decreased the total
resistance of the circuit. Each light drops 12 volts. - ANS-40. Two lights are connected
in parallel. An additional light is added, also wired in parallel. Tech A says the total
resistance will decrease. Tech B says the total Voltage will drop. Who is right?
A. Tech A only
B. tech B
C. Both A and B
D. Neither A or B
,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.
- ANS-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- conventional sealed beams have all but been replaced by the other Types of
headlamps listed in this question. - ANS-71. all of these types of headlights are found
on todays vehicles EXCEPT for:
A. Conventional sealed beam headlamps.
B. Composite sealed beams headlamps.
C. Xenon headlamps.
D. LED headlamps.
A- for best results and less corrosion at the solder point, a rosin core flux should be
used. - ANS-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- 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. - ANS-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 horn sound is a weak tone, current is too low, and poor electrical connections may
be the culprit. If a fuse is blown, the horn will not sound at all. - ANS-39. a horn makes a
very weak sound. Tech A says a faulty power connection could be the cause. Tech B
says a faulty fuse 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
A- if the so called Green eye is not visible, the green tip of the built in hydrometer is not
floating high enough in the electrolyte to be visible. A fully charged battery will cause the
built in hydrometer to float to the top of the electrolyte and allow the green tip of it to be
seen. - ANS-14. When checking the green eye of a sealed maintenance free battery, no
color seen indicates that the battery is:
A. undercharged
B. charged properly.
C. Overcharged.
D. Damaged.
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. -
ANS-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- LED lights have no filament, so a visual inspection will not determine whether the
light is good. If an LED light assembly does not illuminate, check the light for an open
circuit, inspect the wiring and make sure there is power to the light, just as you would for
a conventional incandescent light. - ANS-69. When checking exterior LED lights on a
vehicle, all of these can be checked EXCEPT:
A. Condition of filament
B. continuity
C. power circuit
D. Ground circuit
