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WorksheetsElectrical Components Quiz
Total questions: 46
Worksheet time: 28mins
What is the primary function of a resistor in an electrical circuit?
Store electrical energy
Regulate current flow
Convert AC to DC
Amplify signals
A capacitor primarily:
Resists current flow
Converts electrical energy into mechanical energy
Stores and releases electrical energy
Amplifies signals
Which of the following is a passive electronic component?
Transistor
Diode
Capacitor
Integrated Circuit
The main purpose of a heat sink in an electronic circuit is to:
Store electrical energy
Increase resistance
Dissipate heat
Provide insulation
A Printed Circuit Board (PCB) primarily provides:
Electrical insulation
A platform for mounting and connecting components
Mechanical movement
A power supply source
Which component is used to regulate DC voltage in power supplies?
Transformer
Inverter
Voltage regulator
Circuit breaker
A fuse protects an electrical circuit by:
Storing charge
Converting AC to DC
Breaking the circuit in case of overcurrent
Regulating voltage
A relay is primarily used for:
Generating power
Amplifying signals
Switching circuits using low-power signals
Storing electrical energy
What is the function of a rectifier in an electrical circuit?
Convert DC to AC
Convert AC to DC
Increase voltage
Reduce current
The function of an inverter is to:
Convert DC to AC
Convert AC to DC
Store electrical energy
Act as a fuse
A Light Emitting Diode (LED) emits light when:
A mechanical force is applied
A current flows through it in the forward direction
It is exposed to a magnetic field
It absorbs heat
A sounder is used in circuits for:
Visual indication
Generating sound alerts
Regulating voltage
Cooling circuits
A contactor is mainly used to:
Break circuits during overcurrent
Switch electrical power in high-voltage applications
Regulate voltage
Convert DC to AC
What does a circuit breaker do when excessive current flows?
Stores charge
Amplifies signals
Opens the circuit
Regulates voltage
A display panel is used for:
Providing visual information
Storing electrical charge
Regulating voltage
Switching power
The primary function of a transistor is to:
Store electrical energy
Amplify or switch electronic signals
Convert AC to DC
Act as a sensor
A (a) is used to resist current flow.
Capacitors store and release (a) energy.
A (a) converts AC to DC.
A ______ provides mechanical support and electrical connections to electronic components.
A circuit breaker protects against (a) .
A transformer is used to change (a) levels.
A thermistor is a temperature-sensitive (a) .
A relay is an (a) switch.
An inverter converts DC into (a) .
A light-emitting diode produces light when (a) passes through it.
A fuse operates by (a) when excess current flows.
A heat sink is used for (a) dissipation.
A power supply provides electrical (a) to circuits.
A (a) is used for sound signaling.
A display panel provides (a) feedback.
True or False: A resistor increases current in a circuit.
(a)
True or False: A capacitor stores charge.
(a)
True or False: A PCB provides electrical insulation only.
(a)
True or False: A circuit breaker resets automatically after tripping.
True or False: A fuse is reusable.
(a)
True or False: An inverter converts AC to DC.
(a)
True or False: A relay is used for low-power switching only.
(a)
True or False: Heat sinks help in cooling components.
(a)
True or False: LEDs function only with AC power.
(a)
True or False: A transformer stores energy.
(a)
True or False: A diode allows current in one direction.
(a)
True or False: A display panel is a type of mechanical component.
(a)
True or False: A solenoid is an electromagnetic actuator.
(a)
True or False: A transistor can act as a switch.
(a)
True or False: Circuit breakers function like relays.
(a)
