mecp basic exam questions & answers
2024/2025
which two terminals of a relay are considered the coil terminals? - ANSWERS85 & 86
what is the correct terminology for the banded side of a diode? - ANSWERScathode
how much electrical power consumption results for a measured values of 10 volts into amps? -
ANSWERS20 watts
a measurement of 4 volts is equal to how many millivolts? - ANSWERS40 millivolts
to use Ohm's law for finding voltage what is the correct formula? - ANSWERSi 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. - ANSWERStrue
inductors such as passive crossovers place near High current vehicle wiring can exhibit what condition? -
ANSWERSunwanted audio system noise
which to switching terminals of a relay or electric connected when it is at rest? - ANSWERS87a and 30
while the engine is running what is the primary source of power for the electrical system? - ANSWERSthe
alternator
what is the conversion of alternating current from AC to DC? - ANSWERSrectification
what is the device called that converts ac voltage into DC voltage? - ANSWERSa rectifier
, what is mecp recommended practice for running High current cables through holes drilled into the
firewall of a vehicle? - ANSWERSusing a plastic or rubber grommet
when measuring standby current drain with a digital multimeter which measurement scale is used? -
ANSWERSDC milliamps
when measuring low current MUX ignition circuit what setting should a digital multimeter be set at? -
ANSWERSohms
true or false, foreign vehicle measurements it is mecp recommended practice to use test lights. -
ANSWERSfalse
when troubleshooting voltage drops on suspected bed grounds of amplifiers measured under a load, a
DMM shows voltage between which two points? - ANSWERSthe 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? - ANSWERSAC volts
when the test leads of a DMM are reversed how will the measurement read on the screen? - ANSWERSit
will display the voltage reading with a minus (-) in front of it.
how should the jaw of a crimp tool be positioned in reference to the seam of the crimp connector? -
ANSWERSthe Jaws should face away from the connectors seem
what are three mecp recommended steps to troubleshooting noise problems? - ANSWERSidentify,
isolate, eliminate
when testing for blown fuses, what setting should a DMM be set at? - ANSWERSDC volts
what does the blue section of the 704 Diamond represent? - ANSWERShealth
2024/2025
which two terminals of a relay are considered the coil terminals? - ANSWERS85 & 86
what is the correct terminology for the banded side of a diode? - ANSWERScathode
how much electrical power consumption results for a measured values of 10 volts into amps? -
ANSWERS20 watts
a measurement of 4 volts is equal to how many millivolts? - ANSWERS40 millivolts
to use Ohm's law for finding voltage what is the correct formula? - ANSWERSi 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. - ANSWERStrue
inductors such as passive crossovers place near High current vehicle wiring can exhibit what condition? -
ANSWERSunwanted audio system noise
which to switching terminals of a relay or electric connected when it is at rest? - ANSWERS87a and 30
while the engine is running what is the primary source of power for the electrical system? - ANSWERSthe
alternator
what is the conversion of alternating current from AC to DC? - ANSWERSrectification
what is the device called that converts ac voltage into DC voltage? - ANSWERSa rectifier
, what is mecp recommended practice for running High current cables through holes drilled into the
firewall of a vehicle? - ANSWERSusing a plastic or rubber grommet
when measuring standby current drain with a digital multimeter which measurement scale is used? -
ANSWERSDC milliamps
when measuring low current MUX ignition circuit what setting should a digital multimeter be set at? -
ANSWERSohms
true or false, foreign vehicle measurements it is mecp recommended practice to use test lights. -
ANSWERSfalse
when troubleshooting voltage drops on suspected bed grounds of amplifiers measured under a load, a
DMM shows voltage between which two points? - ANSWERSthe 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? - ANSWERSAC volts
when the test leads of a DMM are reversed how will the measurement read on the screen? - ANSWERSit
will display the voltage reading with a minus (-) in front of it.
how should the jaw of a crimp tool be positioned in reference to the seam of the crimp connector? -
ANSWERSthe Jaws should face away from the connectors seem
what are three mecp recommended steps to troubleshooting noise problems? - ANSWERSidentify,
isolate, eliminate
when testing for blown fuses, what setting should a DMM be set at? - ANSWERSDC volts
what does the blue section of the 704 Diamond represent? - ANSWERShealth
