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WorksheetsQUIZ SK F2
Total questions: 20
Worksheet time: 10mins
What does LED stand for?
Long Emitting Diode
Light Emitting Device
Light Emitting Diode
Low Energy Device
What is the purpose of a digital system's output?
To provide input
To display signal
To store data
To connect devices
How many LEDs are used in the traffic light circuit?
Five
Four
Three
Two
What is the purpose of a digital system's input?
To provide output
To connect devices
To store data
To detect signal
What happens when you press a push button switch?
It makes a loud noise
It can play music
It can turn on or off a device
It stays in one position
What type of switch is a toggle switch?
A switch that spins
A switch that can be in two positions
A switch that is pressed
A switch that is always off
What is the purpose of the Arduino in the circuit?
To play music
To read signals from the input
To make the buttons colorful
To cook food
What does a seven segment display show?
Letters only
Digits from 0-9
Shapes
Colors
How many LEDs are used in a typical seven segment display?
9
8
7
6
What does LCD stand for?
Light Color Display
Liquid Color Display
Light Crystal Display
Liquid Crystal Display
What does RGB stand for?
Red, Green, Blue
Red, Gold, Blue
Red, Green, Black
Red, Green, Bright
What is the main purpose of a temperature sensor?
To generate electricity
To control flow
To detect changes in temperature
To measure pressure
What does a PIR sensor detect?
Visible light
Sound waves
Infrared light
Ultraviolet light
What happens to the green LED in the light sensor circuit when it is bright?
It turns off
It turns on
It blinks
It changes color
What type of switch is commonly used in household wiring?
Rotary switch
Toggle switch
Selector switch
Push button switch
Which of the following is NOT a type of switch mentioned?
Rotary switch
Push button switch
Toggle switch
Selector switch
What is the role of the internal spring mechanism in a push button switch?
To increase the voltage
To connect to the Arduino
To return the button to its unpressed position
To keep the button pressed
What is a common use for buzzers?
To amplify audio
To record sound
For alarm devices
To play music
What does the ultrasonic sensor measure?
Temperature
Sound frequency
Distance
Light intensity
What does a sound sensor convert?
Sound into an electrical signal
Light into sound
Electricity into sound
Heat into sound
