green Flashcards
They did spot being exerted between amber and other objects. This effect called?
Triboelectric effect
If an insulator is rubbed, electrical charges are separated and voltage is generated
Static Electricity
The voltage can reach high values up to the ______
kV Range or kilo volts range
Staff working with such electronic components usually wear
electrostatic strap or bonding braid around the wrist
Can be produced by contact, friction or influence
Static Electricity
Static Electricity usually occur
When the ambient humidity is high
It is the generation of high voltages by friction but no current will flow
Static Electricity
Deformed by using pressure
Piezo Crystal
With certain crystals positive or negative charges and therefore voltage is generated.
Piezoelectric
The voltage that always produce DC is?
heat
The increase mobility of electrons produce by?
By Heat
The force required to separate, which is stored by the electron as potential energy during its escape from the metal surface?
Electric Potential
Thermocouple are used to measure temperature range from?
-200 deg C to 2300 deg C
In Aviation, ______________ are mainly used to measure EGT temperature of engines
Thermocouple
It is the part of the circuit where the thermocouple is connected?
Hot junction
The part in the indicator is connected
Cold junction
The separation of electrons from metal bonding
Electron emission
For the compensate the different length with the resulting of different resistance, a variable resistor is installed which must be calibrated?
Balancing Resistor
Some thermocouple are connected in PARALLEL in a HOUSING which is called?
Junction Box
It is an energy converter that converts electrical charge
Photocell
These opto-electronic components are
Photocells
It consists of electrolyte and electrodes made of 2 different conductive materials.
Galvanic Cell
It is a process of chemical effect in current in electrolysis that can be used for what?
Galvanizing
Type of battery that the electrochemical has a constant current and a variable voltage. Cannot be charge and cannot be reused
Primary cell
The electrochemical process are reversible
Secondary cell
Secondary cells and can be repeatedly recharge and must only charged by using DC
Lead batteries
The rated voltage of lead battery is
2V
AType of battery used in aircraft.
Nickel-Cadmium Battery
It consists of electrolyte and electrodes made of 2 different conductive materials
Galvanic Cell
It is a conducting liquid.
Electrolyte
The rated voltage of Nickel-Cadmium Battery
1.2V and may fall in 1V during discharging
If a coil enters the magnetic field of a magnet, an electrical voltage is generated in the coil during movement
Induction
Mechanical to electrical and produced an AC energy
Generator
It is the opposition to the electron flow
Resistatnce
Voltage forces Electrons to move across a metallic conductor. This is characterized by a flow of charges in a certain direction
Electric current
In conductance, The higher the resistance, the _________________ .
The more current is restricted
In conductance.
High resistance =
Low resistance =
High resistance = low conductance
Low resistance = high conductance
What is the relationship of resistance and conductance?
Reciprocal
Symbol used for conductance?
G
