WorksheetsElectronic Components Quiz
Total questions: 35
Worksheet time: 18mins
What is the primary function of a capacitor in an electrical circuit?
To store energy in an electric field
To convert AC to DC
To amplify signals
To generate electricity
Which of the following materials is NOT commonly used as a dielectric in capacitors?
Paper
Plastic
Wood
Glass
What happens when there is a potential difference across the conductors of a capacitor?
The capacitor discharges completely
A static electric field develops across the dielectric
The capacitor generates heat
The dielectric material melts
Capacitors are graded according to their capacitance and what other factor?
Color
Size
Operating voltage
Weight
What is the primary function of a resistor in an electrical circuit?
To store electrical energy
To amplify electrical signals
To implement electrical resistance
To convert electrical energy to light
Which of the following is NOT a type of resistor based on composition?
Carbon film
Wire-wound
Silicon chip
Thick film
What is the purpose of the colored bands on a resistor?
To indicate the resistor's size
To show the resistor's power rating
To identify the resistor's resistance value
To display the resistor's brand
What is the main function of a diode in an electronic circuit?
To store electrical energy
To allow current to flow in one direction
To amplify electrical signals
To convert electrical energy to light
What is the process called when a diode converts alternating current to direct current?
Amplification
Rectification
Modulation
Induction
What is the function of a light-emitting diode (LED)?
To convert sound into light
To emit light when an electric current passes through it
To store electrical energy
To amplify electrical signals
What is a photodiode primarily used for?
Generating sound waves
Detecting light and converting it into electric current
Storing electrical energy
Amplifying electrical signals
How does a Zener diode differ from a standard diode?
It allows current to flow in both directions
It only allows current to flow in one direction
It allows current to flow in the opposite direction when exposed to enough voltage
It blocks all current flow
What is the main purpose of a rectifier?
To convert direct current (DC) to alternating current (AC)
To convert alternating current (AC) to direct current (DC)
To store electrical energy
To amplify electrical signals
What is the difference between half-wave and full-wave rectification?
Half-wave rectification uses two diodes, full-wave uses one
Half-wave rectification converts the whole waveform, full-wave converts half
Half-wave rectification uses one diode, full-wave uses four diodes
Half-wave rectification is smoother than full-wave
What is a thermistor?
A type of resistor whose resistance varies with temperature
A device that stores electrical energy
A component that amplifies electrical signals
A switch that opens and closes circuits
What material is typically used in thermistors?
Metal
Ceramic or polymer
Glass
Wood
What happens to the resistance of a PTC thermistor as temperature increases?
It decreases
It remains constant
It increases
It fluctuates randomly
What is the function of a DIAC?
To store electrical energy
To conduct current only after its break-over voltage is reached
To amplify electrical signals
To convert AC to DC
What is a TRIAC?
A unidirectional device
A bidirectional electronic component
A type of battery
A light-emitting diode
What is a transistor primarily used for?
To store data
To amplify and switch electronic signals
To convert AC to DC
To measure temperature
How many terminals does a transistor have for connection to an external circuit?
One
Two
Three
Four
What is a thyristor primarily used for?
Storing electrical energy
Controlling a large amount of power and voltage
Measuring electrical resistance
Converting light into electricity
Which of the following is NOT a state of a thyristor?
Reverse blocking mode
Forward blocking mode
Forward conducting mode
Reverse conducting mode
What is the primary function of a power inverter?
To convert AC to DC
To convert DC to AC
To store electrical energy
To increase voltage
In which applications are solid-state inverters commonly used?
To power AC microgeneration sources
To power DC microgeneration sources
To power large AC motors
To power small DC motors
What is the opposite function of an inverter?
Transformer
Rectifier
Generator
Battery
What is the primary function of an inductor in an electrical circuit?
To store energy in a magnetic field
To convert AC to DC
To amplify signals
To generate electricity
Which of the following is NOT a characteristic of a semiconductor?
High electrical conductivity
Intermediate electrical conductivity
Conductivity increases with temperature
Used in electronic components
What is the main purpose of a fuse in an electrical circuit?
To store electrical energy
To protect the circuit by breaking the connection in case of overload
To amplify electrical signals
To convert electrical energy to light
What is the primary function of a Zener diode in a circuit?
To amplify electrical signals
To regulate voltage
To store electrical energy
To convert AC to DC
Which component is used to store charge in an electronic circuit?
Resistor
Capacitor
Inductor
Diode
What is the main purpose of a varistor in an electrical circuit?
To amplify signals
To protect against voltage spikes
To convert AC to DC
To store electrical energy
What is the primary function of an inductor in an electronic circuit?
To store energy in a magnetic field
To convert AC to DC
To amplify electrical signals
To emit light
Which of the following is NOT a type of transistor?
Bipolar Junction Transistor (BJT)
Field Effect Transistor (FET)
Light Emitting Transistor (LET)
Insulated Gate Bipolar Transistor (IGBT)
What is the main purpose of a transformer in an electrical circuit?
To increase or decrease voltage levels
To store electrical energy
To convert DC to AC
To amplify electrical signals
