Electrical Terminology

Question 1

Voltage rectifier

Answer 1

Changes AC to DC voltage

Question 2

Diode

Answer 2

Allows current flow only in one direction

Question 3

Inverter

Answer 3

Changes DC to AC voltage

Question 4

Transistor

Answer 4

Electrical switch used on circuit boards

Question 5

CANbus

Answer 5

Controller area network

J1939

Question 6

Multiplexing

Answer 6

Allows multiple ECM’s to share the same wiring to communicate

Question 7

Thermistor

Answer 7

Change resistance in proportion to temperature

Two wire

Intake manifold

Question 8

Rheostats

Answer 8

Variable sliding contact moving along a restrictive wire

Two wire

Question 9

Potentiometers

Answer 9

Vary signal voltage depending on position of sliding contact

3 wire

Question 10

Piezoresistive sensor

Answer 10

Pressure sensor

Produces voltage or resistance when compressed

Question 11

Variable reluctance sensor

Answer 11

Measures rotational speed

Two wire

Question 12

Hall effect sensor

Answer 12

Measures rotational speed

Question 13

MAF sensor

Answer 13

Mass airflow sensor

Measure the heat of the air entering the intake