Basic Electricity Flashcards
(36 cards)
- One Kilowatt is equal to how many watts?
1000 watts
What is a common cause of damage to solid-state components and/or integrated circuits?
Eletro-Static discharge (ESD) from the human body during handling
Describe magnetism.
An object properties which attracts metalic substances.
When the external magnetizing force is removed the difference between permanent/temporary magnets is?
Permanent magnets retain their magnetism. Temporary magnets rapidily lose magnetism.
What makes up an electrical circuit?
A sorce of electrical energy, a resistance(load) and conductors (wires)
What law governs the basic study of eletricity?
Ohm’s law.
What are the basic elements of Ohm’s law?
E- Voltage, R- Resistance , I- Current.
What change occurs in a D.C. circuit when applied voltage is increased & resistance remains constant?
Current increases.
Ohms Law expressed as an equation:
E= I x R, R= E/I, I= E/R
Scientifically, power is measured in?
Watts
Common methods electrical energy can be produced is ?
Pressure (Pizoelectric), Chemical(Battery), Thermal, Sun light
The law relevant to voltage law is?
Kirchoff’s Law
Three types of DC Electrical Circuits:
Series, Parallel, Series-Parallel
Types of circuits A&P ́s encounter on an aircraft:
A combination circuit, series-parallel.
Compare AC & DC circuits in aircraft:
DC flows constantly in one direction. AC has the abillity to change direction at or during regular intervals, is lighter in weight and it ́s voltage can be stepped up and down by using a transformer.
How much voltage do most aircraft systems require for special equipment?
Most 24 volts, needs 400Hz AC current.
You must apply a correction to the specific gavity that varies between what two values?
When the temperature is less than 70°F or more than 90°F.
How is capacitance represented in an AC circuit?
By a Capacitor.
The function of a capacitor in an AC circuit:
To store electricity
How is inductance represented in an AC circuit?
By a coil
Describe inductance
Inducted voltage which opposite in direction to the applied voltage.
Properties of an AC circuit which opposes any change in current?
Resistance, Inductive reactance and Capacitive reactance.
Describe impedance in AC circuit:
The total opposition to the current flow in an AC circuit
consisting of either resistance and reactance, or elements of both capacitive or inductive.
What is common use of most multimeters?
Troubleshooting and measurements of voltage, resistance, current continuity, Capacitance and inductance.
