Unit D: Electrical and electronics Flashcards
What stands for programmable read only memory?
PROM
The value of resistors is expressed in ____.
OHMS
Magnetic lines of flux have a direction from ____ ____ to ____ ____.
North pole
South pole
A semiconductor that allows current to flow in only one direction is called a ____.
Diode
The amount of voltage induced in a conductor moving in a magnetic field is not affected by the number of ____ in the magnetic field.
Electrons
The lead of the diode that is connected to the N type material of the diode is called the ____.
Cathode
A special diode that can conduct current in a reverse bias connection under certain conditions is called a ____ diode.
Zener
Voltage is measured in units called ____.
Volts
Protons have a ____ charge.
Postitive
A material that is a semiconductor of electricity will have ____ valence electrons.
4
An ____ voltage signal is a continuously variable voltage.
Analog
The opposition offered by a material to magnetic flux is defined as ____.
Reluctance
What stands for random access memory?
RAM
When removing battery terminal cables, which cable should be removed first?
Negative cable
A ____ cable would be used as an antenna lead for the GPS system on heavy equipment.
Coaxial
What is a commonly used material in manufacturing semiconductors?
Silicon
Mutual conduction occurs in a coil only when the magnetic field is ____.
Moving
When referring to electronic control systems, the acronym ADC stands for:
Analog to Digital Converter
Gallium and indium are ____ semiconductor doping materials.
P type
Insulators are used to prevent the flow of ____ from one conductor to another.
Electrons
Adding resistors in parallel ____ the total resistance of the parallel circuit.
Decreases
The stationary part of a generator is called a ____.
Strator
When referring to electronic control systems, adjusting the length of time the signal is on compared to the length of time the signal is off is called ____ ____ ____.
Pulse width modulation
To reduce the effect of meter loading when using a voltmeter use a voltmeter with a high ____.
Impedance
Twisted wire pairs are often used on ____ ____ circuits to limit the magnetic field effect on other electrical circuits.
Fuel injector
