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WorksheetsArduino Basics Course Final Exam V1
Total questions: 35
Worksheet time: 18mins
What is a sound sensor?
A sensor used to emit sounds through a microphone
A sensor used to detect various sounds through a microphone
A sensor used to measure the frequency of sound and display it on a small screen
A sensor used to blast music
What does "int" mean in an Arduino code?
A variable being stored as a decimal is being defined
A pin is being defined as a variable
A constant being stored as an integer is being defined
A variable being stored as an integer is being defined
What is pin 2?
Green
Red
GND
Blue
What is an else if statement?
A line of code that is executed if none of the previous statements are true
A secondary statement that checks whether it is true after a previous statement before executing code
A statement that checks whether it is true then proceeds to execute the code
A line of code that is executed regardless of the validity of a statement
True or False: When the sensor is tilted beyond a certain angle, the conductive clement moves due to gravity, making contact with the electrical terminals and completing the circuit
True
False
What are output devices?
devices that are used to collect data that goes into a computer or device to be processed
devices that are used to display the information and data within a computer or device
devices that you plug into a computer or microcontroller
devices that you unplug from a computer or microcontroller
What does Serial.println() do?
It prints text on the same line in the Serial Monitor
It starts a new line then prints text in the Serial Monitor
It prints text vertically in the Serial Monitor
It prints text on a piece of paper
Identify the photoresistor
What is a digital device?
A device that only has two states: on or off/high or low
A device that has many states: usually anywhere from 0 to 225
A device that connects to the internet or to a computer
A clock
Which of the following lines is used to add the Servo library?
#include <Servo.h>
Servo myservo;
myservo.attach(9);
myservo.write(0);
Why do we need motor drivers to use DC motors?
Because Arduino provides a minimum of 9V and DC motors need 5V
Because Arduino provides a maximum of 5V and DC motors need 9V
Because the current flowing through a circuit containing a DC motor is so unstable it needs to be controlled properly
Because the DC Motor doesn't have enough pins for all of its functions
What is an electrical insulator?
a material that allows electricity to flow through freely
a material that resists the flow of electricity
a material that prevents heat from escaping
a material that prevents sound from escaping
Which of the following is the correct wiring?
What happens to the sensor reading when it is placed in a wet environment?
The value fluctuates randomly
The value decreases to around 0
The value remains constant
The value increases to around 1023
IR Sensors...
only emit infrared waves
only detect infrared waves
both emit and detect infrared waves
neither emit nor detect infrared waves
What is voltage measured in?
V, volts
A, Amps
Ω, Ohms
V, voltaires
Which of the following not an application of a servo motor?
Windshield Wiper
Washing Machine
Toll Booth
Robot
Which function should you use to collect the values from the IR Sensor
digitalRead()
analogRead()
Serial.print()
Serial.println()
What is pin 4?
Green
Red
GND
Blue
True or False: When the sound sensor vibrates, it changes the capacitance, which causes the voltage to change.
True
False
What does the line delay(5000) do?
It pauses the program for 5000 seconds
It pauses the program for 5000 milliseconds
It pauses the program for 50 seconds
It pauses the program for 50 milliseconds
What is an analog device?
A device that only has two states: on or off/high or low
A device that has many states: usually anywhere from 0 to 225
A TV
A clock
What are input devices?
devices that are used to collect data that goes into a computer or device to be processed
devices that are used to display the information and data within a computer or device
devices that you plug into a computer or microcontroller
devices that you unplug from a computer or microcontroller
What color do you get if you mix red and green light?
Brown Light
Black Light
Yellow Light
Orange Light
What are actuators?
devices that work due to electromagnetic interactions: the interaction of current (the flow of electrons) and a magnetic field
a part of a device or machine that converts electricity or energy into controlled physical movements
a magnet charged by electricity
a current amplifier and a bridge between a microcontroller and a motor
What is Ohm's Law?
A formula used to show the relationship between velocity, intensity, and resistance:
V = IR
A formula used to show the relationship between voltage, current, and resistance: V = IR
A formula used to show the relationship between velocity, intensity, and resistance:
I = RV
A formula used to show the relationship between voltage, current, and resistance: I = RV
A motor with a resistance of 56Ω is connected to a voltage source. Two amps of current flows in the circuit. What is the voltage of the source?
0.0357 volts
28 volts
112 volts
11.2 volts
What are motor drivers?
devices that work due to electromagnetic interactions: the interaction of current (the flow of electrons) and a magnetic field
a part of a device or machine that converts electricity or energy into controlled physical movements
a magnet charged by electricity
a current amplifier and a bridge between a microcontroller and a motor
Which of the following is not a pin on a servo motor?
5V
VCC
PWM
GND
What are motors?
devices that work due to electromagnetic interactions: the interaction of current (the flow of electrons) and a magnetic field
a part of a device or machine that converts electricity or energy into controlled physical movements
a magnet charged by electricity
a current amplifier and a bridge between a microcontroller and a motor
What type of sensor is the soil moisture sensor?
Analog
Digital
Analog and Digital
Neither Analog nor Digital
A current of 8 amps flows through a lamp when it is connected to a 200 volt power source. What is the resistance of the lamp?
0.04 ohms
25 ohms
1600 ohms
250 ohms
What is pin 3?
VCC
5V
GND
OUTPUT
What does the line of code delay() do?
It sets a digital device to either a high or low state
It sets an analog device to any state from 0 to 255
It pauses your computer
It pauses the code and waits before continuing it
What is current measured in?
V, volts
A, amps
C, charges
Ω, ohms
