MECP BASIC EXAM 2025 QUESTIONS
AND ANSWERS
Which two terminals of a relay are considered the coil terminals? - ANS 85 & 86
what is the correct terminology for the banded side of a diode? - ANS cathode
how much electrical power consumption results for a measured values of 10 volts into amps? -
ANS 20 watts
a measurement of 4 volts is equal to how many millivolts? - ANS 40 millivolts
to use Ohm's law for finding voltage what is the correct formula? - ANS i x r ( current X
resistance)
true or false, when two 4 ohm loads are connected in parallel the total resistance will be less
than 4 Ohms. - ANS true
inductors such as passive crossovers place near High current vehicle wiring can exhibit what
condition? - ANS unwanted audio system noise
which to switching terminals of a relay or electric connected when it is at rest? - ANS 87a and
30
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, while the engine is running what is the primary source of power for the electrical system? -
ANS the alternator
what is the conversion of alternating current from AC to DC? - ANS rectification
what is the device called that converts ac voltage into DC voltage? - ANS a rectifier
what is mecp recommended practice for running High current cables through holes drilled into
the firewall of a vehicle? - ANS using a plastic or rubber grommet
when measuring standby current drain with a digital multimeter which measurement scale is
used? - ANS DC milliamps
when measuring low current MUX ignition circuit what setting should a digital multimeter be
set at? - ANS ohms
true or false, foreign vehicle measurements it is mecp recommended practice to use test lights.
- ANS false
when troubleshooting voltage drops on suspected bed grounds of amplifiers measured under a
load, a DMM shows voltage between which two points? - ANS the negative of the battery
post and the negative at the amp
when measuring audio output levels of an amplifier at the speaker terminals what is the correct
setting on a DMM? - ANS AC volts
when the test leads of a DMM are reversed how will the measurement read on the screen? -
ANS it will display the voltage reading with a minus (-) in front of it.
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2
AND ANSWERS
Which two terminals of a relay are considered the coil terminals? - ANS 85 & 86
what is the correct terminology for the banded side of a diode? - ANS cathode
how much electrical power consumption results for a measured values of 10 volts into amps? -
ANS 20 watts
a measurement of 4 volts is equal to how many millivolts? - ANS 40 millivolts
to use Ohm's law for finding voltage what is the correct formula? - ANS i x r ( current X
resistance)
true or false, when two 4 ohm loads are connected in parallel the total resistance will be less
than 4 Ohms. - ANS true
inductors such as passive crossovers place near High current vehicle wiring can exhibit what
condition? - ANS unwanted audio system noise
which to switching terminals of a relay or electric connected when it is at rest? - ANS 87a and
30
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 1
, while the engine is running what is the primary source of power for the electrical system? -
ANS the alternator
what is the conversion of alternating current from AC to DC? - ANS rectification
what is the device called that converts ac voltage into DC voltage? - ANS a rectifier
what is mecp recommended practice for running High current cables through holes drilled into
the firewall of a vehicle? - ANS using a plastic or rubber grommet
when measuring standby current drain with a digital multimeter which measurement scale is
used? - ANS DC milliamps
when measuring low current MUX ignition circuit what setting should a digital multimeter be
set at? - ANS ohms
true or false, foreign vehicle measurements it is mecp recommended practice to use test lights.
- ANS false
when troubleshooting voltage drops on suspected bed grounds of amplifiers measured under a
load, a DMM shows voltage between which two points? - ANS the negative of the battery
post and the negative at the amp
when measuring audio output levels of an amplifier at the speaker terminals what is the correct
setting on a DMM? - ANS AC volts
when the test leads of a DMM are reversed how will the measurement read on the screen? -
ANS it will display the voltage reading with a minus (-) in front of it.
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2
