Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
30 Cards in this Set
- Front
- Back
|
Alternating Current
|
current that oscillates in one direction and then reverses its polarity periodically
|
|
|
Amplitude Modulation
|
a common form of voice transmission system where intelligence is conveyed through the alteration of a signals amplitude.
|
|
|
amperage
|
the measure of the amount of current moving through a conductor
|
|
|
capacitor
|
device used to s y ore electrical energy
|
|
|
conductor
|
a medium that allows current v and flow through it
|
|
|
Diode
|
electronic device which allows an electric current and flow in one direction
|
|
|
Doppler Effect
|
frequency shift of an approaching signal due to velocity/distance
|
|
|
Direct Current
|
continuous flow of electrons in one direction
|
|
|
Ducting
|
extreme condition of reflection when a wave is rebounded
|
|
|
Electromagnetic Force
|
combination of all electrical and magnetic forces acting between charged particles
|
|
|
FM
|
intelligence is conveyed through modulation, or alteration, or the frequency of a signal. commonly used in voice transmission and in radio navigation systems due to clarity
|
|
|
Hertz
|
cycles per second
|
|
|
inverter
|
supply system used to convert DC to AC
|
|
|
Motor Generator
|
converts mechanical energy into electrical energy
|
|
|
Ohm
|
measurement of resistance to electrical current
|
|
|
RACON
|
a radar transponder device designed to produce a distinctive image on the screens of ships' radar sets, thus enabling the mariner to determine position with greater certainty than would be possible using a normal radar display alone.
|
|
|
Relay
|
device for remote/automatic control actuated by varying conditions in electric current
|
|
|
Resistor
|
controls flow of energy in electrical current
|
|
|
Rectifier
|
an electrical device that converts an alternating current into a direct one by allowing a current to flow through in direction only
|
|
|
Rheostat
|
an electrical instrument used to control a current by varying the resistance
|
|
|
Transducer
|
a device that converts variations in a physical quantity, such as pressure or brightness, into an electrical signal, or vice versa
|
|
|
Transformer
|
reduces or increases the voltage of an alternating current
|
|
|
Transistor
|
amplifies and rectifies a signal. controls flow of electricity in electronics
|
|
|
UPS
|
provides power to a load when the input fails
|
|
|
UHF
|
designation for radio frequencies in the range between 300 MHz and 3000 MHz
|
|
|
Voltage
|
measure of force that moves electrons in a current
|
|
|
VHF
|
range of radio frequency electromagnetic waves for 30 MHz to 300MHz.
|
|
|
Watt
|
amount of work that an electrical current can accommodate
|
|
|
Electromotive Force
|
a difference in potential that tends to give rise to an electric current
|
|
|
Transponder
|
device forvreceivibg a radio signal and automatically transmitting a different signal
|
