AUTO MECHANICS SEMESTER 1
QUESTIONS AND ANSWERS GRADED
A+
dWhat is the function of the S terminal on the rear of a typical alternator? - to sense the charging
voltage at the bettery
what does a x10 probe do when used with an oscilloscope to measure an electrical signal? - attenuates
the signal voltage by 10
which of the following actions is not a precaution to take when measuring a high voltage? - earth
yourself by toughing a ground pipe or equipment casing
the voltage of a stop lamp is being measured with a multimeter. the COM lead is connected to the GND
pin, and the V/ohms lead is connected to the stop lamp pin. the ignition is switched to run with the
engine running. the lights are switched off, and the brake pedal is depressed. what voltage would be
expected on the multimeter? - 14.5 V
which of these steps must be preformed when using a digital multi meter (DMM) to test the continuity
of a wire? Choose all the right answers - connect the black test lead to the COM socket labeled ohms.
switch on the DMM and set the range selector to the continuity range setting.
disconnect the wire from the circuit.
connect the test lead probes to the ends of the wire.
the circuit below contains two identical lamps. which of the following statements is true? - The current
through lamp LP A and lamp LP Bis approximately the same
how are positive and negative plates placed in the battery cell? - Alternately positive and negative
which one of these diagram labels indicates the cable that can carry the most current? - 475/.4
what voltage should all tools and equipment used on high voltage vehicles be rated and certified to? -
10,000 V
what does a ground fault monitor do in high voltage vehicles? - detects if there is a current imbalance in
the HV system
Two technicians are discussing how to work with airbags.
Technician A states that live airbags must be deployed before they are disposed of.
Technician B states that airbags contain powder that can be an irritant.
which technician, if either, is correct? - both technician a and technician B
How is a scan tool connected to a vehicle to extract a DTC? - Through a 16-pin plug
QUESTIONS AND ANSWERS GRADED
A+
dWhat is the function of the S terminal on the rear of a typical alternator? - to sense the charging
voltage at the bettery
what does a x10 probe do when used with an oscilloscope to measure an electrical signal? - attenuates
the signal voltage by 10
which of the following actions is not a precaution to take when measuring a high voltage? - earth
yourself by toughing a ground pipe or equipment casing
the voltage of a stop lamp is being measured with a multimeter. the COM lead is connected to the GND
pin, and the V/ohms lead is connected to the stop lamp pin. the ignition is switched to run with the
engine running. the lights are switched off, and the brake pedal is depressed. what voltage would be
expected on the multimeter? - 14.5 V
which of these steps must be preformed when using a digital multi meter (DMM) to test the continuity
of a wire? Choose all the right answers - connect the black test lead to the COM socket labeled ohms.
switch on the DMM and set the range selector to the continuity range setting.
disconnect the wire from the circuit.
connect the test lead probes to the ends of the wire.
the circuit below contains two identical lamps. which of the following statements is true? - The current
through lamp LP A and lamp LP Bis approximately the same
how are positive and negative plates placed in the battery cell? - Alternately positive and negative
which one of these diagram labels indicates the cable that can carry the most current? - 475/.4
what voltage should all tools and equipment used on high voltage vehicles be rated and certified to? -
10,000 V
what does a ground fault monitor do in high voltage vehicles? - detects if there is a current imbalance in
the HV system
Two technicians are discussing how to work with airbags.
Technician A states that live airbags must be deployed before they are disposed of.
Technician B states that airbags contain powder that can be an irritant.
which technician, if either, is correct? - both technician a and technician B
How is a scan tool connected to a vehicle to extract a DTC? - Through a 16-pin plug
