Technician Subelement T6 Flashcards
What electrical component opposes the flow of current in a DC circuit?
A. Inductor
B. Resistor
C. Voltmeter
D. Transformer
Resistor
What type of component is often used as an adjustable volume control?
A. Fixed resistor
B. Power resistor
C. Potentiometer
D. Transformer
Potentiometer
What electrical parameter is controlled by a potentiometer?
A. Inductance
B. Resistance
C. Capacitance
D. Field strength
Resistance
What electrical component stores energy in an electric field?
A. Resistor
B. Capacitor
C. Inductor
D. Diode
Capacitor
What type of electrical component consists of two or more conductive surfaces separated by an insulator?
A. Resistor
B. Potentiometer
C. Oscillator
D. Capacitor
Capacitor
What type of electrical component stores energy in a magnetic field?
A. Resistor
B. Capacitor
C. Inductor
D. Diode
Inductor
What electrical component usually is constructed as a coil of wire?
A. Switch
B. Capacitor
C. Diode
D. Inductor
Inductor
What electrical component is used to connect or disconnect electrical circuits?
A. Magnetron
B. Switch
C. Thermistor
D. All of these choices are correct
Switch
What electrical component is used to protect other circuit components from current overloads?
A. Fuse
B. Capacitor
C. Inductor
D. All of these choices are correct
Fuse
Which of the following battery types is rechargeable?
A. Nickel-metal hydride
B. Lithium-ion
C. Lead-acid gel-cell
D. All of these choices are correct
All of these choices are correct
Which of the following battery types is not rechargeable?
A. Nickel-cadmium
B. Carbon-zinc
C. Lead-acid
D. Lithium-ion
Carbon-zinc
What class of electronic components uses a voltage or current signal to control current flow?
A. Capacitors
B. Inductors
C. Resistors
D. Transistors
Transistors
What electronic component allows current to flow in only one direction?
A. Resistor
B. Fuse
C. Diode
D. Driven element
Diode
Which of these components can be used as an electronic switch or amplifier?
A. Oscillator
B. Potentiometer
C. Transistor
D. Voltmeter
Transistor
Which of the following components can consist of three layers of semiconductor material?
A. Alternator
B. Transistor
C. Triode
D. Pentagrid converter
Transistor
Which of the following electronic components can amplify signals?
A. Transistor
B. Variable resistor
C. Electrolytic capacitor
D. Multi-cell battery
Transistor
How is the cathode lead of a semiconductor diode often marked on the package?
A. With the word “cathode”
B. With a stripe
C. With the letter C
D. With the letter K
With a stripe
What does the abbreviation LED stand for?
A. Low Emission Diode
B. Light Emitting Diode
C. Liquid Emission Detector
D. Long Echo Delay
Light Emitting Diode
What does the abbreviation FET stand for?
A. Field Effect Transistor
B. Fast Electron Transistor
C. Free Electron Transmitter
D. Frequency Emission Transmitter
Field Effect Transistor
What are the names of the two electrodes of a diode?
A. Plus and minus
B. Source and drain
C. Anode and cathode
D. Gate and base
Anode and cathode
Which of the following could be the primary gain-producing component in an RF power amplifier?
A. Transformer
B. Transistor
C. Reactor
D. Resistor
Transistor
What is the term that describes a device’s ability to amplify a signal?
A. Gain
B. Forward resistance
C. Forward voltage drop
D. On resistance
Gain
What is the name of an electrical wiring diagram that uses standard component symbols?
A. Bill of materials
B. Connector pinout
C. Schematic
D. Flow chart
Schematic
What is component 1 in figure T1?
A. Resistor
B. Transistor
C. Battery
D. Connector
Resistor
What is component 2 in figure T1?
A. Resistor
B. Transistor
C. Indicator lamp
D. Connector
Transistor
What is component 3 in figure T1?
A. Resistor
B. Transistor
C. Lamp
D. Ground symbol
Lamp
What is component 4 in figure T1?
A. Resistor
B. Transistor
C. Battery
D. Ground symbol
Battery
What is component 6 in figure T2?
A. Resistor
B. Capacitor
C. Regulator IC
D. Transistor
Capacitor
What is component 8 in figure T2?
A. Resistor
B. Inductor
C. Regulator IC
D. Light emitting diode
Light emitting diode
What is component 9 in figure T2?
A. Variable capacitor
B. Variable inductor
C. Variable resistor
D. Variable transformer
Variable resistor
What is component 4 in figure T2?
A. Variable inductor
B. Double-pole switch
C. Potentiometer
D. Transformer
Transformer
What is component 3 in figure T3?
A. Connector
B. Meter
C. Variable capacitor
D. Variable inductor
Variable inductor
What is component 4 in figure T3?
A. Antenna
B. Transmitter
C. Dummy load
D. Ground
Antenna
What do the symbols on an electrical schematic represent?
A. Electrical components
B. Logic states
C. Digital codes
D. Traffic nodes
Electrical components
Which of the following is accurately represented in electrical schematics?
A. Wire lengths
B. Physical appearance of components
C. The way components are interconnected
D. All of these choices are correct
The way components are interconnected
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
A. Transformer
B. Rectifier
C. Amplifier
D. Reflector
Rectifier
What is a relay?
A. An electrically-controlled switch
B. A current controlled amplifier
C. An optical sensor
D. A pass transistor
An electrically-controlled switch
What type of switch is represented by component 3 in figure T2?
A. Single-pole single-throw
B. Single-pole double-throw
C. Double-pole single-throw
D. Double-pole double-throw
Single-pole single-throw
Which of the following displays an electrical quantity as a numeric value?
A. Potentiometer
B. Transistor
C. Meter
D. Relay
Meter
What type of circuit controls the amount of voltage from a power supply?
A. Regulator
B. Oscillator
C. Filter
D. Phase inverter
Regulator
What component is commonly used to change 120V AC house current to a lower AC voltage for other uses?
A. Variable capacitor
B. Transformer
C. Transistor
D. Diode
Transformer
Which of the following is commonly used as a visual indicator?
A. LED
B. FET
C. Zener diode
D. Bipolar transistor
LED
Which of the following is combined with an inductor to make a tuned circuit?
A. Resistor
B. Zener diode
C. Potentiometer
D. Capacitor
Capacitor
What is the name of a device that combines several semiconductors and other components into one package?
A. Transducer
B. Multi-pole relay
C. Integrated circuit
D. Transformer
Integrated circuit
What is the function of component 2 in Figure T1?
A. Give off light when current flows through it
B. Supply electrical energy
C. Control the flow of current
D. Convert electrical energy into radio waves
Control the flow of current
Which of the following is a resonant or tuned circuit?
A. An inductor and a capacitor connected in series or parallel to form a filter
B. A type of voltage regulator
C. A resistor circuit used for reducing standing wave ratio
D. A circuit designed to provide high-fidelity audio
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?
A. To decrease the resistance of DC power connections
B. To increase the current carrying capability of the wire
C. To prevent coupling of unwanted signals to or from the wire
D. To couple the wire to other signals
To prevent coupling of unwanted signals to or from the wire
