mid term/exam electrical and mechanical automotive
1. Current is being measured with the DVOM set to the blow a fuse.
200 milliamp scale. The current flow increases to 2.5
amps. The meter will:
2. In any electrical circuit there can be: voltage without current.
3. Silver is an excellent conductor. This means that silver a good carrier of current
is: flow through a circuit.
4. Connecting a DVOM in reverse polarity when trying to show a negative reading.
read current will:
5. Voltage in an automotive circuit: does not flow through the
circuit.
6. If a blower motor does not run, a good first voltage at the hot side of the mo-
check would be: tor terminal.
7. A normal working circuit with one load will read full up until the load, and 0
source voltage: volts after the load.
8. With a wire conductor, the heavier the gauge, the: The less resistance it has
9. The part of the circuit from the negative terminal of ground side.
the load to the ground is called:
10. A voltmeter is connected at a connector located be- break, or open, in the
tween the power window motor and ground. When ground connection.
the power window switch is closed, the meter reads
13 volts. A possible problem is a:
11. A fan motor is in series with a resistor. The resistor gets in proportion to the resis-
hot when the fan motor is running. The voltage drops tance of each load.
across the motor and resistor will read:
, mid term/exam electrical and mechanical automotive
12. Voltage measured across a turn signal bulb should be: full source voltage.
13. An amplifier booster that draws 20 amps is wired in increase the total current
parallel to the stereo system circuit on a vehicle. This of the circuit by 20 amps
will: .B Increase the total resis-
tance of the circuit by 240
ohms. C. decrease the to-
tal current of the circuit by
20 amps .D. increase the
circuit voltage by 2 volts.
14. A rear wiper circuit is ground-side switched. A voltage the rear wiper is not
reading at a connector on the ground side of the load turned on.
shows full source voltage. This likely means:
15. A flow chart says to run the fan motor and check for a voltage drop between the
good connection between terminal #3 and the vehicle two points.
frame. The best way to do this is to check the:
16. A wire runs behind a damaged door panel from a con- DVOM to check the voltage
nector ground terminal to a ground bolt. To check con- drop while operating the
tinuity between the ground terminal and the ground door lock.
bolt, use a:
17. A flow chart says that a circuit is formed between DVOM to measure voltage
terminals 3 and 8 with the switch in the UP position. drop across terminals 3
This can be checked, without disconnecting the switch and 8 with the switch held
from the circuit, by using a: UP.
18. A blower motor fuse blows after replacing the motor. lower resistance in the
The problem could be: new motor than the orig-
inal part.
, mid term/exam electrical and mechanical automotive
19. A load connected to a corroded ground: is like another load con-
nected in series. Part
of the voltage will
drop across the corroded
ground.
20. In a parallel circuit, if two bulbs each draw 3 amps 7 amps.
and an instrument panel lamp draws 1 amp, the total
current in the circuit is:
21. An open in a complex parallel circuit might cause cur- find a path to ground
rent to: through another load,
such as a bulb filament.
22. The headlights are blinking on and off. The problem is current overload in the
likely: headlamp circuit.
23. The windshield wipers do not work, and a voltage an open in the hot side of
drop check at the wiper motor reads 0 volts. The prob- the circuit.
lem is likely:
24. The fuse blows as soon as the cigarette lighter is bad heating element, re-
pushed in. The problem is likely a: ducing the resistance in-
side the lighter.
25. The first troubleshooting step after discovering that to see if any other circuits
the wipers do not work is: are not working.
26. The rear wiper will not turn off. The problem could be: a short to another circuit
that is hot at all times.
27. Motor circuits are likely to be protected by a circuit motors draw a surge of
breaker because: current when first started.
1. Current is being measured with the DVOM set to the blow a fuse.
200 milliamp scale. The current flow increases to 2.5
amps. The meter will:
2. In any electrical circuit there can be: voltage without current.
3. Silver is an excellent conductor. This means that silver a good carrier of current
is: flow through a circuit.
4. Connecting a DVOM in reverse polarity when trying to show a negative reading.
read current will:
5. Voltage in an automotive circuit: does not flow through the
circuit.
6. If a blower motor does not run, a good first voltage at the hot side of the mo-
check would be: tor terminal.
7. A normal working circuit with one load will read full up until the load, and 0
source voltage: volts after the load.
8. With a wire conductor, the heavier the gauge, the: The less resistance it has
9. The part of the circuit from the negative terminal of ground side.
the load to the ground is called:
10. A voltmeter is connected at a connector located be- break, or open, in the
tween the power window motor and ground. When ground connection.
the power window switch is closed, the meter reads
13 volts. A possible problem is a:
11. A fan motor is in series with a resistor. The resistor gets in proportion to the resis-
hot when the fan motor is running. The voltage drops tance of each load.
across the motor and resistor will read:
, mid term/exam electrical and mechanical automotive
12. Voltage measured across a turn signal bulb should be: full source voltage.
13. An amplifier booster that draws 20 amps is wired in increase the total current
parallel to the stereo system circuit on a vehicle. This of the circuit by 20 amps
will: .B Increase the total resis-
tance of the circuit by 240
ohms. C. decrease the to-
tal current of the circuit by
20 amps .D. increase the
circuit voltage by 2 volts.
14. A rear wiper circuit is ground-side switched. A voltage the rear wiper is not
reading at a connector on the ground side of the load turned on.
shows full source voltage. This likely means:
15. A flow chart says to run the fan motor and check for a voltage drop between the
good connection between terminal #3 and the vehicle two points.
frame. The best way to do this is to check the:
16. A wire runs behind a damaged door panel from a con- DVOM to check the voltage
nector ground terminal to a ground bolt. To check con- drop while operating the
tinuity between the ground terminal and the ground door lock.
bolt, use a:
17. A flow chart says that a circuit is formed between DVOM to measure voltage
terminals 3 and 8 with the switch in the UP position. drop across terminals 3
This can be checked, without disconnecting the switch and 8 with the switch held
from the circuit, by using a: UP.
18. A blower motor fuse blows after replacing the motor. lower resistance in the
The problem could be: new motor than the orig-
inal part.
, mid term/exam electrical and mechanical automotive
19. A load connected to a corroded ground: is like another load con-
nected in series. Part
of the voltage will
drop across the corroded
ground.
20. In a parallel circuit, if two bulbs each draw 3 amps 7 amps.
and an instrument panel lamp draws 1 amp, the total
current in the circuit is:
21. An open in a complex parallel circuit might cause cur- find a path to ground
rent to: through another load,
such as a bulb filament.
22. The headlights are blinking on and off. The problem is current overload in the
likely: headlamp circuit.
23. The windshield wipers do not work, and a voltage an open in the hot side of
drop check at the wiper motor reads 0 volts. The prob- the circuit.
lem is likely:
24. The fuse blows as soon as the cigarette lighter is bad heating element, re-
pushed in. The problem is likely a: ducing the resistance in-
side the lighter.
25. The first troubleshooting step after discovering that to see if any other circuits
the wipers do not work is: are not working.
26. The rear wiper will not turn off. The problem could be: a short to another circuit
that is hot at all times.
27. Motor circuits are likely to be protected by a circuit motors draw a surge of
breaker because: current when first started.
