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WorksheetsTA Điện - Điện tử
Total questions: 183
Worksheet time: 15mins
Name
Class
Date
1.
a power of
a)
Expression of exponential scale, often used for magnitudes like power of 10
b)
Type of resistor made by winding a wire around a core
c)
Moving contact of a variable resistor
d)
Electricity generated by wind turbines
2.
acceptor impurities
a)
Atoms added to a semiconductor to create p-type material by accepting electrons
b)
Expression of exponential scale, often used for magnitudes like power of 10
c)
Type of resistor made by winding a wire around a core
d)
Moving contact of a variable resistor
3.
acetate strip
a)
Insulating plastic tape used in electronics
b)
Atoms added to a semiconductor to create p-type material by accepting electrons
c)
Expression of exponential scale, often used for magnitudes like power of 10
d)
Type of resistor made by winding a wire around a core
4.
algebraic
a)
Related to use of algebra in calculations, including electrical formulas
b)
Insulating plastic tape used in electronics
c)
Atoms added to a semiconductor to create p-type material by accepting electrons
d)
Expression of exponential scale, often used for magnitudes like power of 10
5.
alkaline
a)
Type of battery or substance with high pH, often used in power sources
b)
Related to use of algebra in calculations, including electrical formulas
c)
Insulating plastic tape used in electronics
d)
Atoms added to a semiconductor to create p-type material by accepting electrons
6.
alloy
a)
Mixture of metals used in conductors or components
b)
Type of battery or substance with high pH, often used in power sources
c)
Related to use of algebra in calculations, including electrical formulas
d)
Insulating plastic tape used in electronics
7.
altering current (AC)
a)
Electric current that changes direction periodically
b)
Mixture of metals used in conductors or components
c)
Type of battery or substance with high pH, often used in power sources
d)
Related to use of algebra in calculations, including electrical formulas
8.
altering voltage
a)
Voltage that varies in magnitude and polarity
b)
Electric current that changes direction periodically
c)
Mixture of metals used in conductors or components
d)
Type of battery or substance with high pH, often used in power sources
9.
aluminium electrolytic
a)
A type of capacitor with aluminum electrodes and electrolyte
b)
Voltage that varies in magnitude and polarity
c)
Electric current that changes direction periodically
d)
Mixture of metals used in conductors or components
10.
aluminium steel reinforced
a)
Used in power lines; combines aluminum’s conductivity with steel’s strength
b)
A type of capacitor with aluminum electrodes and electrolyte
c)
Voltage that varies in magnitude and polarity
d)
Electric current that changes direction periodically
11.
ammeter
a)
Instrument used to measure electric current
b)
Used in power lines; combines aluminum’s conductivity with steel’s strength
c)
A type of capacitor with aluminum electrodes and electrolyte
d)
Voltage that varies in magnitude and polarity
12.
amplifier in
a)
Input terminal of an amplifier
b)
Instrument used to measure electric current
c)
Used in power lines; combines aluminum’s conductivity with steel’s strength
d)
A type of capacitor with aluminum electrodes and electrolyte
13.
amplitude
a)
Maximum extent of an electrical signal (voltage/current)
b)
Input terminal of an amplifier
c)
Instrument used to measure electric current
d)
Used in power lines; combines aluminum’s conductivity with steel’s strength
14.
anode
a)
The positive terminal in an electrolytic cell or diode (direction of conventional current)
b)
Maximum extent of an electrical signal (voltage/current)
c)
Input terminal of an amplifier
d)
Instrument used to measure electric current
15.
antimatter
a)
Material composed of antiparticles, opposite charge to normal matter
b)
The positive terminal in an electrolytic cell or diode (direction of conventional current)
c)
Maximum extent of an electrical signal (voltage/current)
d)
Input terminal of an amplifier
16.
armature
a)
Rotating part of an electric motor or generator
b)
Material composed of antiparticles, opposite charge to normal matter
c)
The positive terminal in an electrolytic cell or diode (direction of conventional current)
d)
Maximum extent of an electrical signal (voltage/current)
17.
artificial respiration
a)
Not electrical but sometimes powered by electrical equipment in medical settings
b)
Rotating part of an electric motor or generator
c)
Material composed of antiparticles, opposite charge to normal matter
d)
The positive terminal in an electrolytic cell or diode (direction of conventional current)
18.
atom
a)
Smallest unit of matter; basis of electrical charge
b)
Not electrical but sometimes powered by electrical equipment in medical settings
c)
Rotating part of an electric motor or generator
d)
Material composed of antiparticles, opposite charge to normal matter
19.
bassalt
a)
(Likely meant "basalt") – insulating material in some electrical applications
b)
Smallest unit of matter; basis of electrical charge
c)
Not electrical but sometimes powered by electrical equipment in medical settings
d)
Rotating part of an electric motor or generator
20.
batteries
a)
Devices that store and supply electrical energy
b)
(Likely meant "basalt") – insulating material in some electrical applications
c)
Smallest unit of matter; basis of electrical charge
d)
Not electrical but sometimes powered by electrical equipment in medical settings
21.
biomass
a)
Organic material used to produce electricity in renewable energy
b)
Devices that store and supply electrical energy
c)
(Likely meant "basalt") – insulating material in some electrical applications
d)
Smallest unit of matter; basis of electrical charge
22.
brass
a)
Copper-zinc alloy used in connectors and terminals
b)
Organic material used to produce electricity in renewable energy
c)
Devices that store and supply electrical energy
d)
(Likely meant "basalt") – insulating material in some electrical applications
23.
brushes
a)
Conductive contacts in motors or generators
b)
Copper-zinc alloy used in connectors and terminals
c)
Organic material used to produce electricity in renewable energy
d)
Devices that store and supply electrical energy
24.
cable
a)
Assembly of one or more conductors with insulation
b)
Conductive contacts in motors or generators
c)
Copper-zinc alloy used in connectors and terminals
d)
Organic material used to produce electricity in renewable energy
25.
capacitance
a)
Ability of a component to store charge per volt
b)
Assembly of one or more conductors with insulation
c)
Conductive contacts in motors or generators
d)
Copper-zinc alloy used in connectors and terminals
26.
capacitor
a)
Electronic component that stores and releases electrical energy
b)
Ability of a component to store charge per volt
c)
Assembly of one or more conductors with insulation
d)
Conductive contacts in motors or generators
27.
carcinogemic
a)
Likely meant "carcinogenic"; not primarily electrical, but may apply to materials used
b)
Electronic component that stores and releases electrical energy
c)
Ability of a component to store charge per volt
d)
Assembly of one or more conductors with insulation
28.
cartridge fuse
a)
Cylindrical fuse used to protect electrical circuits
b)
Likely meant "carcinogenic"; not primarily electrical, but may apply to materials used
c)
Electronic component that stores and releases electrical energy
d)
Ability of a component to store charge per volt
29.
cathode
a)
The negative terminal in an electrolytic cell or diode (receives electrons)
b)
Cylindrical fuse used to protect electrical circuits
c)
Likely meant "carcinogenic"; not primarily electrical, but may apply to materials used
d)
Electronic component that stores and releases electrical energy
30.
cell
a)
Single unit in a battery generating electrical energy
b)
The negative terminal in an electrolytic cell or diode (receives electrons)
c)
Cylindrical fuse used to protect electrical circuits
d)
Likely meant "carcinogenic"; not primarily electrical, but may apply to materials used
31.
cellular telephone
a)
Mobile phone that operates on radio frequency communication
b)
Single unit in a battery generating electrical energy
c)
The negative terminal in an electrolytic cell or diode (receives electrons)
d)
Cylindrical fuse used to protect electrical circuits
32.
charge carriers
a)
Particles (like electrons or holes) that carry electric current
b)
Mobile phone that operates on radio frequency communication
c)
Single unit in a battery generating electrical energy
d)
The negative terminal in an electrolytic cell or diode (receives electrons)
33.
choke
a)
Inductor used to block high-frequency AC signals
b)
Particles (like electrons or holes) that carry electric current
c)
Mobile phone that operates on radio frequency communication
d)
Single unit in a battery generating electrical energy
34.
circle
a)
Often used to represent loop or circuit in diagrams
b)
Inductor used to block high-frequency AC signals
c)
Particles (like electrons or holes) that carry electric current
d)
Mobile phone that operates on radio frequency communication
35.
circuit
a)
A closed path for electric current
b)
Often used to represent loop or circuit in diagrams
c)
Inductor used to block high-frequency AC signals
d)
Particles (like electrons or holes) that carry electric current
36.
circuit breakers
a)
Safety devices that interrupt current flow in overload conditions
b)
A closed path for electric current
c)
Often used to represent loop or circuit in diagrams
d)
Inductor used to block high-frequency AC signals
37.
coal
a)
Fossil fuel used in thermal power generation
b)
Safety devices that interrupt current flow in overload conditions
c)
A closed path for electric current
d)
Often used to represent loop or circuit in diagrams
38.
coal-fired boiler
a)
Boiler that uses coal to produce steam for electricity generation
b)
Fossil fuel used in thermal power generation
c)
Safety devices that interrupt current flow in overload conditions
d)
A closed path for electric current
39.
columbite
a)
Ore of niobium used in electronics
b)
Boiler that uses coal to produce steam for electricity generation
c)
Fossil fuel used in thermal power generation
d)
Safety devices that interrupt current flow in overload conditions
40.
commutator
a)
Switch in motors/generators to reverse current direction
b)
Ore of niobium used in electronics
c)
Boiler that uses coal to produce steam for electricity generation
d)
Fossil fuel used in thermal power generation
41.
compartment
a)
Section or space, often for housing electrical components
b)
Switch in motors/generators to reverse current direction
c)
Ore of niobium used in electronics
d)
Boiler that uses coal to produce steam for electricity generation
42.
compass
a)
Device using Earth’s magnetic field, also used in electronics teaching
b)
Section or space, often for housing electrical components
c)
Switch in motors/generators to reverse current direction
d)
Ore of niobium used in electronics
43.
conductors
a)
Materials that allow electric current to flow
b)
Device using Earth’s magnetic field, also used in electronics teaching
c)
Section or space, often for housing electrical components
d)
Switch in motors/generators to reverse current direction
44.
conservator tank
a)
Oil expansion tank in a transformer
b)
Materials that allow electric current to flow
c)
Device using Earth’s magnetic field, also used in electronics teaching
d)
Section or space, often for housing electrical components
45.
cordless telephone
a)
Phone using RF instead of a wired connection
b)
Oil expansion tank in a transformer
c)
Materials that allow electric current to flow
d)
Device using Earth’s magnetic field, also used in electronics teaching
46.
covalent bond
a)
Type of atomic bond where electrons are shared (relevant to semiconductor theory)
b)
Phone using RF instead of a wired connection
c)
Oil expansion tank in a transformer
d)
Materials that allow electric current to flow
47.
crystalline structure
a)
Regular arrangement of atoms, important in semiconductors
b)
Type of atomic bond where electrons are shared (relevant to semiconductor theory)
c)
Phone using RF instead of a wired connection
d)
Oil expansion tank in a transformer
48.
current-carrying conductor
a)
A conductor through which electric current flows
b)
Regular arrangement of atoms, important in semiconductors
c)
Type of atomic bond where electrons are shared (relevant to semiconductor theory)
d)
Phone using RF instead of a wired connection
49.
transmission system
a)
Transfers electricity from power plants to consumers
b)
A conductor through which electric current flows
c)
Regular arrangement of atoms, important in semiconductors
d)
Type of atomic bond where electrons are shared (relevant to semiconductor theory)
50.
depletion region
a)
Zone around a pn-junction with no free charge carriers
b)
Transfers electricity from power plants to consumers
c)
A conductor through which electric current flows
d)
Regular arrangement of atoms, important in semiconductors
51.
diagram
a)
A visual representation of an electrical circuit
b)
Zone around a pn-junction with no free charge carriers
c)
Transfers electricity from power plants to consumers
d)
A conductor through which electric current flows
52.
direct current (DC)
a)
Current flowing in one direction only
b)
A visual representation of an electrical circuit
c)
Zone around a pn-junction with no free charge carriers
d)
Transfers electricity from power plants to consumers
53.
donor impurities
a)
Atoms added to semiconductors to create n-type material (donate electrons)
b)
Current flowing in one direction only
c)
A visual representation of an electrical circuit
d)
Zone around a pn-junction with no free charge carriers
54.
dopant
a)
Element added to modify semiconductor behavior
b)
Atoms added to semiconductors to create n-type material (donate electrons)
c)
Current flowing in one direction only
d)
A visual representation of an electrical circuit
55.
earth
a)
Electrical grounding to prevent electric shock
b)
Element added to modify semiconductor behavior
c)
Atoms added to semiconductors to create n-type material (donate electrons)
d)
Current flowing in one direction only
56.
electric current
a)
Flow of electric charge through a conductor
b)
Electrical grounding to prevent electric shock
c)
Element added to modify semiconductor behavior
d)
Atoms added to semiconductors to create n-type material (donate electrons)
57.
electric field
a)
Force field around a charged particle or object
b)
Flow of electric charge through a conductor
c)
Electrical grounding to prevent electric shock
d)
Element added to modify semiconductor behavior
58.
electric power system
a)
System for generation, transmission, and distribution of electricity
b)
Force field around a charged particle or object
c)
Flow of electric charge through a conductor
d)
Electrical grounding to prevent electric shock
59.
electrochemistry
a)
Study of chemical reactions involving electric currents
b)
System for generation, transmission, and distribution of electricity
c)
Force field around a charged particle or object
d)
Flow of electric charge through a conductor
60.
electrode
a)
Conductive material where electric current enters or leaves
b)
Study of chemical reactions involving electric currents
c)
System for generation, transmission, and distribution of electricity
d)
Force field around a charged particle or object
61.
electrolyte
a)
A substance that allows ionic conduction in batteries or cells
b)
Conductive material where electric current enters or leaves
c)
Study of chemical reactions involving electric currents
d)
System for generation, transmission, and distribution of electricity
62.
electron
a)
Subatomic particle with negative charge
b)
A substance that allows ionic conduction in batteries or cells
c)
Conductive material where electric current enters or leaves
d)
Study of chemical reactions involving electric currents
63.
elementary particle
a)
Fundamental particle not composed of other particles
b)
Subatomic particle with negative charge
c)
A substance that allows ionic conduction in batteries or cells
d)
Conductive material where electric current enters or leaves
64.
eletromagnet
a)
A coil that generates a magnetic field when current flows
b)
Fundamental particle not composed of other particles
c)
Subatomic particle with negative charge
d)
A substance that allows ionic conduction in batteries or cells
65.
energy density
a)
Energy stored per unit volume or mass
b)
A coil that generates a magnetic field when current flows
c)
Fundamental particle not composed of other particles
d)
Subatomic particle with negative charge
66.
etching
a)
Process of removing material (e.g. on PCB) using chemicals
b)
Energy stored per unit volume or mass
c)
A coil that generates a magnetic field when current flows
d)
Fundamental particle not composed of other particles
67.
farad
a)
Unit of capacitance
b)
Process of removing material (e.g. on PCB) using chemicals
c)
Energy stored per unit volume or mass
d)
A coil that generates a magnetic field when current flows
68.
ferrite ring
a)
Magnetic ring used for filtering high-frequency noise
b)
Unit of capacitance
c)
Process of removing material (e.g. on PCB) using chemicals
d)
Energy stored per unit volume or mass
69.
forward-biased diode
a)
Diode in a condition where it conducts current
b)
Magnetic ring used for filtering high-frequency noise
c)
Unit of capacitance
d)
Process of removing material (e.g. on PCB) using chemicals
70.
friction
a)
Resistance between moving objects; affects electric machines mechanically
b)
Diode in a condition where it conducts current
c)
Magnetic ring used for filtering high-frequency noise
d)
Unit of capacitance
71.
fuel cell
a)
Device converting chemical energy into electrical energy directly
b)
Resistance between moving objects; affects electric machines mechanically
c)
Diode in a condition where it conducts current
d)
Magnetic ring used for filtering high-frequency noise
72.
fuses
a)
Safety devices that melt to interrupt excessive current
b)
Device converting chemical energy into electrical energy directly
c)
Resistance between moving objects; affects electric machines mechanically
d)
Diode in a condition where it conducts current
73.
generators
a)
Devices that convert mechanical energy to electrical energy
b)
Safety devices that melt to interrupt excessive current
c)
Device converting chemical energy into electrical energy directly
d)
Resistance between moving objects; affects electric machines mechanically
74.
geothermal power
a)
Electricity generated from heat beneath Earth’s surface
b)
Devices that convert mechanical energy to electrical energy
c)
Safety devices that melt to interrupt excessive current
d)
Device converting chemical energy into electrical energy directly
75.
germanium
a)
Semiconductor material used in diodes and transistors
b)
Electricity generated from heat beneath Earth’s surface
c)
Devices that convert mechanical energy to electrical energy
d)
Safety devices that melt to interrupt excessive current
76.
gigantic magnet
a)
Very large electromagnet or permanent magnet
b)
Semiconductor material used in diodes and transistors
c)
Electricity generated from heat beneath Earth’s surface
d)
Devices that convert mechanical energy to electrical energy
77.
grip
a)
Mechanical holding force; used for tool or connector stability
b)
Very large electromagnet or permanent magnet
c)
Semiconductor material used in diodes and transistors
d)
Electricity generated from heat beneath Earth’s surface
78.
hard-wearing
a)
Durable under stress, suitable for electrical housings or cables
b)
Mechanical holding force; used for tool or connector stability
c)
Very large electromagnet or permanent magnet
d)
Semiconductor material used in diodes and transistors
79.
heavy duty
a)
Designed to handle large loads or high power
b)
Durable under stress, suitable for electrical housings or cables
c)
Mechanical holding force; used for tool or connector stability
d)
Very large electromagnet or permanent magnet
80.
hole
a)
In semiconductors, the absence of an electron acting as a positive charge carrier
b)
Designed to handle large loads or high power
c)
Durable under stress, suitable for electrical housings or cables
d)
Mechanical holding force; used for tool or connector stability
81.
horizontal straight line
a)
Flat line across axis; may refer to voltage/time graphs
b)
In semiconductors, the absence of an electron acting as a positive charge carrier
c)
Designed to handle large loads or high power
d)
Durable under stress, suitable for electrical housings or cables
82.
hum
a)
Unwanted low-frequency noise from power systems (50/60 Hz)
b)
Flat line across axis; may refer to voltage/time graphs
c)
In semiconductors, the absence of an electron acting as a positive charge carrier
d)
Designed to handle large loads or high power
83.
hydraulic plant
a)
Facility using pressurized fluid for mechanical/electric systems
b)
Unwanted low-frequency noise from power systems (50/60 Hz)
c)
Flat line across axis; may refer to voltage/time graphs
d)
In semiconductors, the absence of an electron acting as a positive charge carrier
84.
hydroelectricity
a)
Electricity produced by water-powered turbines
b)
Facility using pressurized fluid for mechanical/electric systems
c)
Unwanted low-frequency noise from power systems (50/60 Hz)
d)
Flat line across axis; may refer to voltage/time graphs
85.
hydro-eletric power station
a)
Power station using water flow to drive turbines and generate electricity
b)
Electricity produced by water-powered turbines
c)
Facility using pressurized fluid for mechanical/electric systems
d)
Unwanted low-frequency noise from power systems (50/60 Hz)
86.
induce
a)
To generate voltage or current through magnetic influence
b)
Power station using water flow to drive turbines and generate electricity
c)
Electricity produced by water-powered turbines
d)
Facility using pressurized fluid for mechanical/electric systems
87.
inductance
a)
Property of a conductor to oppose changes in current via magnetic field
b)
To generate voltage or current through magnetic influence
c)
Power station using water flow to drive turbines and generate electricity
d)
Electricity produced by water-powered turbines
88.
inertia
a)
Resistance to change in motion; affects motor startup and speed
b)
Property of a conductor to oppose changes in current via magnetic field
c)
To generate voltage or current through magnetic influence
d)
Power station using water flow to drive turbines and generate electricity
89.
ingot
a)
Block of metal used as raw material for wires or components
b)
Resistance to change in motion; affects motor startup and speed
c)
Property of a conductor to oppose changes in current via magnetic field
d)
To generate voltage or current through magnetic influence
90.
input amplitude
a)
Strength or level of signal entering a device
b)
Block of metal used as raw material for wires or components
c)
Resistance to change in motion; affects motor startup and speed
d)
Property of a conductor to oppose changes in current via magnetic field
91.
inspection
a)
Checking and testing electrical systems for compliance or safety
b)
Strength or level of signal entering a device
c)
Block of metal used as raw material for wires or components
d)
Resistance to change in motion; affects motor startup and speed
92.
insulators
a)
Materials that resist electric current flow
b)
Checking and testing electrical systems for compliance or safety
c)
Strength or level of signal entering a device
d)
Block of metal used as raw material for wires or components
93.
integrated circuit
a)
A microelectronic device with multiple electronic components on a single chip
b)
Materials that resist electric current flow
c)
Checking and testing electrical systems for compliance or safety
d)
Strength or level of signal entering a device
94.
lamination
a)
Thin layers of material (often in transformer cores) to reduce eddy current losses
b)
A microelectronic device with multiple electronic components on a single chip
c)
Materials that resist electric current flow
d)
Checking and testing electrical systems for compliance or safety
95.
lapping
a)
Polishing process used in preparing semiconductor surfaces
b)
Thin layers of material (often in transformer cores) to reduce eddy current losses
c)
A microelectronic device with multiple electronic components on a single chip
d)
Materials that resist electric current flow
96.
lattice
a)
Regular atomic structure in solids, important in semiconductors
b)
Polishing process used in preparing semiconductor surfaces
c)
Thin layers of material (often in transformer cores) to reduce eddy current losses
d)
A microelectronic device with multiple electronic components on a single chip
97.
leadacid
a)
Type of rechargeable battery using lead plates and sulfuric acid
b)
Regular atomic structure in solids, important in semiconductors
c)
Polishing process used in preparing semiconductor surfaces
d)
Thin layers of material (often in transformer cores) to reduce eddy current losses
98.
lithium
a)
Light metal used in high-energy batteries
b)
Type of rechargeable battery using lead plates and sulfuric acid
c)
Regular atomic structure in solids, important in semiconductors
d)
Polishing process used in preparing semiconductor surfaces
99.
live
a)
Carrying electrical current and thus dangerous
b)
Light metal used in high-energy batteries
c)
Type of rechargeable battery using lead plates and sulfuric acid
d)
Regular atomic structure in solids, important in semiconductors
100.
low-voltage
a)
Electric systems under ~1000V AC / 1500V DC
b)
Carrying electrical current and thus dangerous
c)
Light metal used in high-energy batteries
d)
Type of rechargeable battery using lead plates and sulfuric acid
101.
mechanical energy
a)
Energy of moving parts in systems like motors
b)
Electric systems under ~1000V AC / 1500V DC
c)
Carrying electrical current and thus dangerous
d)
Light metal used in high-energy batteries
102.
memory effect
a)
Battery phenomenon where it "remembers" a lower capacity if not fully discharged
b)
Energy of moving parts in systems like motors
c)
Electric systems under ~1000V AC / 1500V DC
d)
Carrying electrical current and thus dangerous
103.
microscopic particles
a)
Extremely small particles, such as electrons
b)
Battery phenomenon where it "remembers" a lower capacity if not fully discharged
c)
Energy of moving parts in systems like motors
d)
Electric systems under ~1000V AC / 1500V DC
104.
molecule
a)
Smallest unit of a compound
b)
Extremely small particles, such as electrons
c)
Battery phenomenon where it "remembers" a lower capacity if not fully discharged
d)
Energy of moving parts in systems like motors
105.
momentarily
a)
For a very short time, often used in switches or pulses
b)
Smallest unit of a compound
c)
Extremely small particles, such as electrons
d)
Battery phenomenon where it "remembers" a lower capacity if not fully discharged
106.
monomer styrene
a)
Basic unit of polystyrene plastic, used in insulation
b)
For a very short time, often used in switches or pulses
c)
Smallest unit of a compound
d)
Extremely small particles, such as electrons
107.
motherboard of a computer
a)
Main circuit board connecting all components
b)
Basic unit of polystyrene plastic, used in insulation
c)
For a very short time, often used in switches or pulses
d)
Smallest unit of a compound
108.
motor
a)
Device that converts electrical energy into mechanical energy
b)
Main circuit board connecting all components
c)
Basic unit of polystyrene plastic, used in insulation
d)
For a very short time, often used in switches or pulses
109.
multimeter
a)
Device measuring voltage, current, resistance
b)
Device that converts electrical energy into mechanical energy
c)
Main circuit board connecting all components
d)
Basic unit of polystyrene plastic, used in insulation
110.
multipler
a)
Circuit that increases voltage (e.g., voltage multiplier)
b)
Device measuring voltage, current, resistance
c)
Device that converts electrical energy into mechanical energy
d)
Main circuit board connecting all components
111.
muscle cell
a)
Biological cell responsible for contraction; in biomedical electronics
b)
Circuit that increases voltage (e.g., voltage multiplier)
c)
Device measuring voltage, current, resistance
d)
Device that converts electrical energy into mechanical energy
112.
nanoparticle
a)
Extremely small particle at nanometer scale
b)
Biological cell responsible for contraction; in biomedical electronics
c)
Circuit that increases voltage (e.g., voltage multiplier)
d)
Device measuring voltage, current, resistance
113.
negative charge
a)
Property of electrons or negatively charged bodies
b)
Extremely small particle at nanometer scale
c)
Biological cell responsible for contraction; in biomedical electronics
d)
Circuit that increases voltage (e.g., voltage multiplier)
114.
negative terminal
a)
The terminal of a power source with lower electric potential
b)
Property of electrons or negatively charged bodies
c)
Extremely small particle at nanometer scale
d)
Biological cell responsible for contraction; in biomedical electronics
115.
neutral
a)
A conductor that carries return current or zero potential
b)
The terminal of a power source with lower electric potential
c)
Property of electrons or negatively charged bodies
d)
Extremely small particle at nanometer scale
116.
neutron
a)
Electrically neutral subatomic particle
b)
A conductor that carries return current or zero potential
c)
The terminal of a power source with lower electric potential
d)
Property of electrons or negatively charged bodies
117.
non-conductor
a)
Material that does not conduct electricity
b)
Electrically neutral subatomic particle
c)
A conductor that carries return current or zero potential
d)
The terminal of a power source with lower electric potential
118.
north-seeking pole
a)
Magnetic pole that points to Earth’s north
b)
Material that does not conduct electricity
c)
Electrically neutral subatomic particle
d)
A conductor that carries return current or zero potential
119.
n-type semiconductor
a)
Semiconductor with excess electrons (negative carriers)
b)
Magnetic pole that points to Earth’s north
c)
Material that does not conduct electricity
d)
Electrically neutral subatomic particle
120.
nuclear power
a)
Power generated using nuclear reactions
b)
Semiconductor with excess electrons (negative carriers)
c)
Magnetic pole that points to Earth’s north
d)
Material that does not conduct electricity
121.
nucleus
a)
Central part of an atom containing protons and neutrons
b)
Power generated using nuclear reactions
c)
Semiconductor with excess electrons (negative carriers)
d)
Magnetic pole that points to Earth’s north
122.
oil-fired boiler
a)
Boiler using oil as fuel to produce steam
b)
Central part of an atom containing protons and neutrons
c)
Power generated using nuclear reactions
d)
Semiconductor with excess electrons (negative carriers)
123.
oppositely charged bodies
a)
Two objects with opposite charges attract each other
b)
Boiler using oil as fuel to produce steam
c)
Central part of an atom containing protons and neutrons
d)
Power generated using nuclear reactions
124.
orbit
a)
Path of electrons around the nucleus
b)
Two objects with opposite charges attract each other
c)
Boiler using oil as fuel to produce steam
d)
Central part of an atom containing protons and neutrons
125.
outer shell
a)
Outermost electron layer of an atom
b)
Path of electrons around the nucleus
c)
Two objects with opposite charges attract each other
d)
Boiler using oil as fuel to produce steam
126.
output amplitude
a)
Signal strength at the output of a system
b)
Outermost electron layer of an atom
c)
Path of electrons around the nucleus
d)
Two objects with opposite charges attract each other
127.
parallel circuit
a)
Circuit with multiple paths for current to flow
b)
Signal strength at the output of a system
c)
Outermost electron layer of an atom
d)
Path of electrons around the nucleus
128.
pentavalent
a)
Atom with five valence electrons, used in n-type doping
b)
Circuit with multiple paths for current to flow
c)
Signal strength at the output of a system
d)
Outermost electron layer of an atom
129.
period
a)
Time it takes for one cycle of a wave
b)
Atom with five valence electrons, used in n-type doping
c)
Circuit with multiple paths for current to flow
d)
Signal strength at the output of a system
130.
photovoltalic cell
a)
(Typo: photovoltaic cell): Converts sunlight into electricity
b)
Time it takes for one cycle of a wave
c)
Atom with five valence electrons, used in n-type doping
d)
Circuit with multiple paths for current to flow
131.
plotting
a)
Drawing graphs of voltage, current, etc.
b)
(Typo: photovoltaic cell): Converts sunlight into electricity
c)
Time it takes for one cycle of a wave
d)
Atom with five valence electrons, used in n-type doping
132.
pn-junction diode
a)
Semiconductor device with a p-n junction for directing current
b)
Drawing graphs of voltage, current, etc.
c)
(Typo: photovoltaic cell): Converts sunlight into electricity
d)
Time it takes for one cycle of a wave
133.
polarised
a)
Having polarity; applies to capacitors and diodes
b)
Semiconductor device with a p-n junction for directing current
c)
Drawing graphs of voltage, current, etc.
d)
(Typo: photovoltaic cell): Converts sunlight into electricity
134.
pole
a)
Terminal or contact point in electrical devices
b)
Having polarity; applies to capacitors and diodes
c)
Semiconductor device with a p-n junction for directing current
d)
Drawing graphs of voltage, current, etc.
135.
polythene strip
a)
Insulating plastic strip made of polyethylene
b)
Terminal or contact point in electrical devices
c)
Having polarity; applies to capacitors and diodes
d)
Semiconductor device with a p-n junction for directing current
136.
porcelain
a)
Ceramic insulator material resistant to heat and current
b)
Insulating plastic strip made of polyethylene
c)
Terminal or contact point in electrical devices
d)
Having polarity; applies to capacitors and diodes
137.
portable equipment
a)
Electrical tools or machines designed for easy transport
b)
Ceramic insulator material resistant to heat and current
c)
Insulating plastic strip made of polyethylene
d)
Terminal or contact point in electrical devices
138.
positive charge
a)
Property of protons or positively charged objects
b)
Electrical tools or machines designed for easy transport
c)
Ceramic insulator material resistant to heat and current
d)
Insulating plastic strip made of polyethylene
139.
positive terminal
a)
Terminal with higher electrical potential
b)
Property of protons or positively charged objects
c)
Electrical tools or machines designed for easy transport
d)
Ceramic insulator material resistant to heat and current
140.
potentiometer
a)
Adjustable resistor used for voltage division
b)
Terminal with higher electrical potential
c)
Property of protons or positively charged objects
d)
Electrical tools or machines designed for easy transport
141.
power socket
a)
Outlet for connecting electrical devices
b)
Adjustable resistor used for voltage division
c)
Terminal with higher electrical potential
d)
Property of protons or positively charged objects
142.
power supply unit
a)
Converts AC to DC and regulates voltage for devices
b)
Outlet for connecting electrical devices
c)
Adjustable resistor used for voltage division
d)
Terminal with higher electrical potential
143.
preset pot
a)
Pre-adjusted potentiometer
b)
Converts AC to DC and regulates voltage for devices
c)
Outlet for connecting electrical devices
d)
Adjustable resistor used for voltage division
144.
proton
a)
Positively charged subatomic particle
b)
Pre-adjusted potentiometer
c)
Converts AC to DC and regulates voltage for devices
d)
Outlet for connecting electrical devices
145.
p-type semiconductor
a)
Semiconductor with excess holes (positive carriers)
b)
Positively charged subatomic particle
c)
Pre-adjusted potentiometer
d)
Converts AC to DC and regulates voltage for devices
146.
pylons
a)
Tall towers supporting overhead power lines
b)
Semiconductor with excess holes (positive carriers)
c)
Positively charged subatomic particle
d)
Pre-adjusted potentiometer
147.
pyrrhotite
a)
Magnetic mineral, sometimes used in magnetic applications
b)
Tall towers supporting overhead power lines
c)
Semiconductor with excess holes (positive carriers)
d)
Positively charged subatomic particle
148.
quark
a)
Fundamental particle making up protons and neutrons
b)
Magnetic mineral, sometimes used in magnetic applications
c)
Tall towers supporting overhead power lines
d)
Semiconductor with excess holes (positive carriers)
149.
rechargeable cell
a)
Electrochemical cell that can be recharged
b)
Fundamental particle making up protons and neutrons
c)
Magnetic mineral, sometimes used in magnetic applications
d)
Tall towers supporting overhead power lines
150.
reciprocal
a)
Inverse of a value; used in calculations (e.g., resistance)
b)
Electrochemical cell that can be recharged
c)
Fundamental particle making up protons and neutrons
d)
Magnetic mineral, sometimes used in magnetic applications
151.
rectifier diode
a)
Converts AC to DC
b)
Inverse of a value; used in calculations (e.g., resistance)
c)
Electrochemical cell that can be recharged
d)
Fundamental particle making up protons and neutrons
152.
repel and attract
a)
Like charges repel, opposite charges attract
b)
Converts AC to DC
c)
Inverse of a value; used in calculations (e.g., resistance)
d)
Electrochemical cell that can be recharged
153.
resistance
a)
Opposition to current flow in a circuit
b)
Like charges repel, opposite charges attract
c)
Converts AC to DC
d)
Inverse of a value; used in calculations (e.g., resistance)
154.
resistor
a)
Electrical component used to control current
b)
Opposition to current flow in a circuit
c)
Like charges repel, opposite charges attract
d)
Converts AC to DC
155.
restricted diameter
a)
A reduced size, often in wire gauge or insulation space
b)
Electrical component used to control current
c)
Opposition to current flow in a circuit
d)
Like charges repel, opposite charges attract
156.
reverse-biased diode
a)
Diode condition where it blocks current flow
b)
A reduced size, often in wire gauge or insulation space
c)
Electrical component used to control current
d)
Opposition to current flow in a circuit
157.
reversing
a)
Changing direction of current or polarity
b)
Diode condition where it blocks current flow
c)
A reduced size, often in wire gauge or insulation space
d)
Electrical component used to control current
158.
rod
a)
Cylindrical conductive or magnetic object
b)
Changing direction of current or polarity
c)
Diode condition where it blocks current flow
d)
A reduced size, often in wire gauge or insulation space
159.
rotary pot
a)
Rotational potentiometer used for adjusting resistance
b)
Cylindrical conductive or magnetic object
c)
Changing direction of current or polarity
d)
Diode condition where it blocks current flow
160.
semiconductor
a)
Material with conductivity between conductor and insulator
b)
Rotational potentiometer used for adjusting resistance
c)
Cylindrical conductive or magnetic object
d)
Changing direction of current or polarity
161.
series circuit
a)
Circuit where components are connected end-to-end
b)
Material with conductivity between conductor and insulator
c)
Rotational potentiometer used for adjusting resistance
d)
Cylindrical conductive or magnetic object
162.
shelf life
a)
Usable storage time of a component or battery
b)
Circuit where components are connected end-to-end
c)
Material with conductivity between conductor and insulator
d)
Rotational potentiometer used for adjusting resistance
163.
south-seeking pole
a)
Magnetic pole that points toward Earth's south
b)
Usable storage time of a component or battery
c)
Circuit where components are connected end-to-end
d)
Material with conductivity between conductor and insulator
164.
spark
a)
Sudden discharge of electricity across a gap
b)
Magnetic pole that points toward Earth's south
c)
Usable storage time of a component or battery
d)
Circuit where components are connected end-to-end
165.
stiffer
a)
More rigid or less flexible; refers to cables or insulation
b)
Sudden discharge of electricity across a gap
c)
Magnetic pole that points toward Earth's south
d)
Usable storage time of a component or battery
166.
storing charge
a)
Ability to accumulate and hold electric charge (e.g. in a capacitor)
b)
More rigid or less flexible; refers to cables or insulation
c)
Sudden discharge of electricity across a gap
d)
Magnetic pole that points toward Earth's south
167.
subatomic particle
a)
Particle smaller than an atom, such as proton, neutron, electron
b)
Ability to accumulate and hold electric charge (e.g. in a capacitor)
c)
More rigid or less flexible; refers to cables or insulation
d)
Sudden discharge of electricity across a gap
168.
substance
a)
Material or matter, conductor or insulator
b)
Particle smaller than an atom, such as proton, neutron, electron
c)
Ability to accumulate and hold electric charge (e.g. in a capacitor)
d)
More rigid or less flexible; refers to cables or insulation
169.
tantalum bead capacitor
a)
Small, polarized capacitor using tantalum as material
b)
Material or matter, conductor or insulator
c)
Particle smaller than an atom, such as proton, neutron, electron
d)
Ability to accumulate and hold electric charge (e.g. in a capacitor)
170.
tarnsistor
a)
(Typo: transistor): Semiconductor device used to amplify or switch signals
b)
Small, polarized capacitor using tantalum as material
c)
Material or matter, conductor or insulator
d)
Particle smaller than an atom, such as proton, neutron, electron
171.
tidal power
a)
Electricity generated from sea tide movement
b)
(Typo: transistor): Semiconductor device used to amplify or switch signals
c)
Small, polarized capacitor using tantalum as material
d)
Material or matter, conductor or insulator
172.
trimmer
a)
Small adjustable capacitor or resistor
b)
Electricity generated from sea tide movement
c)
(Typo: transistor): Semiconductor device used to amplify or switch signals
d)
Small, polarized capacitor using tantalum as material
173.
trimpot
a)
Small potentiometer used for calibration
b)
Small adjustable capacitor or resistor
c)
Electricity generated from sea tide movement
d)
(Typo: transistor): Semiconductor device used to amplify or switch signals
174.
trivalent impurities
a)
Atoms with 3 valence electrons added to semiconductors (p-type)
b)
Small potentiometer used for calibration
c)
Small adjustable capacitor or resistor
d)
Electricity generated from sea tide movement
175.
tuning coil
a)
Coil used in radios to select frequencies
b)
Atoms with 3 valence electrons added to semiconductors (p-type)
c)
Small potentiometer used for calibration
d)
Small adjustable capacitor or resistor
176.
turbine
a)
Rotating machine converting fluid flow into mechanical energy
b)
Coil used in radios to select frequencies
c)
Atoms with 3 valence electrons added to semiconductors (p-type)
d)
Small potentiometer used for calibration
177.
valence electron
a)
Electrons in the outermost shell, important in bonding
b)
Rotating machine converting fluid flow into mechanical energy
c)
Coil used in radios to select frequencies
d)
Atoms with 3 valence electrons added to semiconductors (p-type)
178.
variable resistor
a)
Resistor whose resistance can be changed manually
b)
Electrons in the outermost shell, important in bonding
c)
Rotating machine converting fluid flow into mechanical energy
d)
Coil used in radios to select frequencies
179.
vice-versa
a)
Reversely; the other way around
b)
Resistor whose resistance can be changed manually
c)
Electrons in the outermost shell, important in bonding
d)
Rotating machine converting fluid flow into mechanical energy
180.
wave power
a)
Energy from surface waves used to generate electricity
b)
Reversely; the other way around
c)
Resistor whose resistance can be changed manually
d)
Electrons in the outermost shell, important in bonding
181.
wind power
a)
Electricity generated by wind turbines
b)
Energy from surface waves used to generate electricity
c)
Reversely; the other way around
d)
Resistor whose resistance can be changed manually
182.
wiper
a)
Moving contact of a variable resistor
b)
Electricity generated by wind turbines
c)
Energy from surface waves used to generate electricity
d)
Reversely; the other way around
183.
wire wound
a)
Type of resistor made by winding a wire around a core
b)
Moving contact of a variable resistor
c)
Electricity generated by wind turbines
d)
Energy from surface waves used to generate electricity
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