Sub-Element T6 Electrical components, circuit diagrams, component functions [4 Exam Questions] Flashcards
What electrical component opposes the flow of current in a DC circuit?
Resistor
What type of component is often used as an adjustable volume control?
Potentiometer
What electrical parameter is controlled by a potentiometer?
Resistance
What electrical component stores energy in an electric field?
Capacitor
What type of electrical component consists of two or more conductive surfaces separated by an insulator?
Capacitor
What type of electrical component stores energy in a magnetic field?
Inductor
What electrical component usually is constructed as a coil of wire?
Inductor
What electrical component is used to connect or disconnect electrical circuits?
Switch
What electrical component is used to protect other circuit components from current overloads?
Fuse
Which of the following battery types is rechargeable?
All of these choices are correct
Which of the following battery types is not rechargeable?
Carbon-zinc
What class of electronic components uses a voltage or current signal to control current flow?
Transistors
What electronic component allows current to flow in only one direction?
Diode
Which of these components can be used as an electronic switch or amplifier?
Transistor
Which of the following components can consist of three layers of semiconductor material?
Transistor
Which of the following electronic components can amplify signals?
Transistor
How is the cathode lead of a semiconductor diode often marked on the package?
With a stripe
What does the abbreviation LED stand for?
Light Emitting Diode
What does the abbreviation FET stand for?
Field Effect Transistor
What are the names of the two electrodes of a diode?
Anode and cathode
Which of the following could be the primary gain-producing component in an RF power amplifier?
Transistor
What is the term that describes a device’s ability to amplify a signal?
Gain
What is the name of an electrical wiring diagram that uses standard component symbols?
Schematic
What do the symbols on an electrical schematic represent?
Electrical components
Which of the following is accurately represented in electrical schematics?
The way components are interconnected
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
Rectifier
What is a relay?
An electrically-controlled switch
Which of the following displays an electrical quantity as a numeric value?
Meter
What type of circuit controls the amount of voltage from a power supply?
Regulator
What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?
Transformer
Which of the following is commonly used as a visual indicator?
LED
Which of the following is combined with an inductor to make a tuned circuit?
Capacitor
What is the name of a device that combines several semiconductors and other components into one package?
Integrated circuit
Which of the following is a resonant or tuned circuit?
An inductor and a capacitor connected in series or parallel to form a filter
Which of the following is a common reason to use shielded wire?
To prevent coupling of unwanted signals to or from the wire
