MECP Basic Exam 2025 Questions
and Answers
Alternating Current (AC) - ANSWER✔✔-Energy that alternates back and forth at a
certain frequency that is measured in hertz.
(IMPORTANT): Audio signals are also measured in AC.
Accessory Power - ANSWER✔✔-The source of power that gives 12 volts when the
ignition key is in the ACC, and RUN positions, BUT NOT at START.
Alternator - ANSWER✔✔-Generates AC voltage, and rectifies it into DC Voltage, The
alternator is the primary source of the vehicles power while the engine is running.
Anode - ANSWER✔✔-The positive pole of a diode
Bandpass Filter - ANSWER✔✔-A device which incorporates both high-pass and low-
pass filters in order to limit both ends of the frequency range.
Bass - ANSWER✔✔-Low audio frequency considered to be below 125 Hz.
BCM - ANSWER✔✔-Body Control Module
, Bluetooth - ANSWER✔✔-Short-Range protocol allowing connections to wireless
devices on a 2.4 GHz band up to 30 feet.
Brain - ANSWER✔✔-The common term used to refer to the main control unit of a
security system.
Cathode - ANSWER✔✔-The negative pole of a diode
Clipping - ANSWER✔✔-Distortion that occurs when a power amplifier is over driven.
This can be seen visually on an oscilloscope. the peaks of a wave form are "clipped off"
at the signal's ceiling.
Crossover - ANSWER✔✔-A device that separates the different frequency bands and
redirects them to different components.
Current - ANSWER✔✔-The rate of electrical flow through a conductor between objects
of opposite charge, symbol is "i" or "A" measured in Amps.
Direct Current (DC) - ANSWER✔✔-A flow of electrons that travels only in one
direction.
Decibel (dB) - ANSWER✔✔-Used to measure the ratio between two power levels.
Diode - ANSWER✔✔-A two-electrode device that allows a voltage to pass through it in
one direction only.
and Answers
Alternating Current (AC) - ANSWER✔✔-Energy that alternates back and forth at a
certain frequency that is measured in hertz.
(IMPORTANT): Audio signals are also measured in AC.
Accessory Power - ANSWER✔✔-The source of power that gives 12 volts when the
ignition key is in the ACC, and RUN positions, BUT NOT at START.
Alternator - ANSWER✔✔-Generates AC voltage, and rectifies it into DC Voltage, The
alternator is the primary source of the vehicles power while the engine is running.
Anode - ANSWER✔✔-The positive pole of a diode
Bandpass Filter - ANSWER✔✔-A device which incorporates both high-pass and low-
pass filters in order to limit both ends of the frequency range.
Bass - ANSWER✔✔-Low audio frequency considered to be below 125 Hz.
BCM - ANSWER✔✔-Body Control Module
, Bluetooth - ANSWER✔✔-Short-Range protocol allowing connections to wireless
devices on a 2.4 GHz band up to 30 feet.
Brain - ANSWER✔✔-The common term used to refer to the main control unit of a
security system.
Cathode - ANSWER✔✔-The negative pole of a diode
Clipping - ANSWER✔✔-Distortion that occurs when a power amplifier is over driven.
This can be seen visually on an oscilloscope. the peaks of a wave form are "clipped off"
at the signal's ceiling.
Crossover - ANSWER✔✔-A device that separates the different frequency bands and
redirects them to different components.
Current - ANSWER✔✔-The rate of electrical flow through a conductor between objects
of opposite charge, symbol is "i" or "A" measured in Amps.
Direct Current (DC) - ANSWER✔✔-A flow of electrons that travels only in one
direction.
Decibel (dB) - ANSWER✔✔-Used to measure the ratio between two power levels.
Diode - ANSWER✔✔-A two-electrode device that allows a voltage to pass through it in
one direction only.
