Arduino MCQ: Arduino Multiple Choice Questions and Answers

Arduino MCQ with answers and explanations for placement tests and job interviews. These solved Arduino MCQ are useful for the campus placement for all freshers including Engineering Students, MCA students, Computer and IT Engineers, etc.

Our Arduino MCQ ( Arduino multiple Choice Questions ) focuses on the basic concept of the Arduino and related to IDE and its standard library. We will regularly update the quiz and most interesting thing is that questions come in a random sequence. So every time you will feel new questions.

We have already published a blog post that contains short questions related to embedded C. If you want you can also see this blog post. It would help you in your preparation. “Embedded C Interview Questions”.

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Guideline of Arduino MCQ:

This Arduino MCQ is intended for checking your Arduino programming knowledge. It takes 40 minutes to pass the Arduino parts quiz. If you don’t finish the Arduino MCQ Quiz within the mentioned time, all the unanswered questions will count as wrong. You can miss the questions by clicking the “Next” button and return to the previous questions by the “Previous” button. Every unanswered question will count as wrong. MCQ on Arduino has features of randomization which feel you a new question set at every attempt.

In this Arduino MCQ Quiz, we have also implemented a feature that not allowed the user to see the next question or finish the Arduino quiz without attempting the current Arduino MCQ.

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Arduino MCQ

Arduino MCQ: Arduino Multiple Choice Questions and Answers

1 / 35

What does 'p' refer to in ATmega328p?

Production

Power-Pico

Programmable on chip

Pico-Power

Pico power technology employs advanced features like multiple clock domains, DMA and event systems to minimize power consumption

Pico power technology employs advanced features like multiple clock domains, DMA and event systems to minimize power consumption

2 / 35

Arduino shields are also called as _________

Add on modules

Extra peripherals

Connectivity modules

Another Arduinos

The Arduino boards can connect with add-on modules termed shields. Multiple and possibly stacked shields may be individually addressable via an I2C serial bus

The Arduino boards can connect with add-on modules termed shields. Multiple and possibly stacked shields may be individually addressable via an I2C serial bus

3 / 35

_________ board allows sewn into clothing.

UNO

LilyPad

Mega

RedBoard

4 / 35

What is the use of the Arduino.h header file?

It gives root access to the microcontroller’s file system

It enables the programmer to access all of Arduino’s core functionality

It allows other people to create libraries for the Arduino code

It doesn’t have any use and can be omitted at any point of time in the code

The Arduino.h file is not something that we encounter during the process of writing the code for the Arduino board because the preprocessor takes care of it before compilation. However, it is a very important file without which we cannot access the Arduino’s features like GPIO IO, Analog IO, etc.

The Arduino.h file is not something that we encounter during the process of writing the code for the Arduino board because the preprocessor takes care of it before compilation. However, it is a very important file without which we cannot access the Arduino’s features like GPIO IO, Analog IO, etc.

5 / 35

How many digital pins are there on the UNO board?

20

14

16

12

6 / 35

Arduino IDE consists of 2 functions. What are they?

Setup() and loop()

Build() and loop()

Setup() and build()

Loop() and build() and setup()

Setup() is called once in the program when a sketch starts after power-up. It is used to initialize variables, input and output pin modes, and other libraries needed in the sketch. Loop() is used after setup() been called, function loop() is executed repeatedly in the main program. It controls the board until the board is powered off or is reset.

Setup() is called once in the program when a sketch starts after power-up. It is used to initialize variables, input and output pin modes, and other libraries needed in the sketch. Loop() is used after setup() been called, function loop() is executed repeatedly in the main program. It controls the board until the board is powered off or is reset.

7 / 35

___________ are pre built circuit boards that fit on top of Android.

Sensor

Breadboard

Sheilds

None of the above

8 / 35

A program written with the IDE for Arduino is called _________

IDE source

Sketch

Cryptography

Source code

Sketches are saved on the development computer as text files with the file extension .ino. Arduino software (IDE) pre-1.0 saved sketches with the extension file .pde.

Sketches are saved on the development computer as text files with the file extension .ino. Arduino software (IDE) pre-1.0 saved sketches with the extension file .pde.

9 / 35

Which of these devices are supported by the Wire Library?

Cellular Devices

I2C Bus

Wi-Fi Devices

Bluetooth Devices

The Wire library is used to communicate data with the I2C (Inter IC) or TWI (Two Wire Interface) Bus which are almost identical to each other and are used for communicating data to different microcontrollers.

The Wire library is used to communicate data with the I2C (Inter IC) or TWI (Two Wire Interface) Bus which are almost identical to each other and are used for communicating data to different microcontrollers.

10 / 35

Which chipset is the LCD library for Arduino based on?

Hitachi HD44780

Hitachi HD45780

Hitachi HDD4780

Hitachi HD46780

The LCD Library in Arduino allows for controlling LCD Displays with the Arduino. This is based on the Hitachi HD44780 Chipset which is a dot-matrix LCD (Liquid Crystal Display) Driver. It can be configured and used with 4-bit and 8-bit microcontrollers.

The LCD Library in Arduino allows for controlling LCD Displays with the Arduino. This is based on the Hitachi HD44780 Chipset which is a dot-matrix LCD (Liquid Crystal Display) Driver. It can be configured and used with 4-bit and 8-bit microcontrollers.

11 / 35

After the compilation process, the file containing the assembly instructions for the microcontroller is stored in a file. What is the file type?

.o

.hex

.cpp

.hpp

The assembly instructions for the microcontroller is stored in a hex file. This file contains the assembly instructions in hex format for the microcontroller to understand and execute. It is the binary executable file that allows us to execute the high-level C code on any microcontroller.

The assembly instructions for the microcontroller is stored in a hex file. This file contains the assembly instructions in hex format for the microcontroller to understand and execute. It is the binary executable file that allows us to execute the high-level C code on any microcontroller.

12 / 35

What is the library to be used if one wants to use UART communications on an Arduino?

TFT Library

Software Serial Library

Ethernet Library

I2C Library

13 / 35

Why does every compilation of a source code in Arduino check for previous compilations?

To delete the previously generated “.o” files

To use the previously generated “.o” files

To relocate the previously generated “.o” files

To copy the previously generated “.o” files

During the compilation process, the Arduino compiler before compilation searches for previously generated “.o” files in the directory, to make the compilation process faster in some cases. This reduces the redundancy of compiling the same parts of the code repeatedly.

During the compilation process, the Arduino compiler before compilation searches for previously generated “.o” files in the directory, to make the compilation process faster in some cases. This reduces the redundancy of compiling the same parts of the code repeatedly.

14 / 35

How much flash memory does the Atmega2560 have?

256K bytes

255K bytes

200K bytes

13K bytes

15 / 35

If one would want to place a call using an Arduino which library would one use which was specifically designed for that purpose?

The Firmata Library

The GSM Library

The TFT Library

The Ethernet Library

The GSM library on the Arduino helps the user to perform call, SMS, or even Internet Communications via the GSM Module. This library works in conjunction with the GSM Shield which uses a modem and AT commands to connect the Arduino to the GSM network.

The GSM library on the Arduino helps the user to perform call, SMS, or even Internet Communications via the GSM Module. This library works in conjunction with the GSM Shield which uses a modem and AT commands to connect the Arduino to the GSM network.

16 / 35

How many analog pins are used in the Arduino Mega board?

14

16

12

8

17 / 35

What is the microcontroller used in Arduino UNO?

ATmega328p

ATmega32114

ATmega2560

AT91SAM3x8E

18 / 35

Do Arduino provides IDE Environment?

True

False

19 / 35

Which of the following statements is not true when dealing with the Firmata library?

The Firmata Library is used to establish communications between the Arduino and the Desktop

The Firmata Library uses the Firmata Protocol for communicating data

The Firmata Library can only be used on an Arduino Uno

The Firmata Library uses the Midi Message Format

20 / 35

Which interface does SD.h depend on for communication between the SD Card Module and the Arduino?

SPI

I2C

USB

TTL

The SD.h library for communication between SD Card Modules and Arduinos uses SPI (Serial Peripheral Interface) for establishing communications. The SPI is a synchronous Serial Communication Protocol that is used for short-distance communications between microcontrollers and devices like SD Card Readers, shift resistors, etc.

The SD.h library for communication between SD Card Modules and Arduinos uses SPI (Serial Peripheral Interface) for establishing communications. The SPI is a synchronous Serial Communication Protocol that is used for short-distance communications between microcontrollers and devices like SD Card Readers, shift resistors, etc.

21 / 35

How to view each command that gets executed during the compilation process?

Enable Verbose Output

Disable Verbose Output

Show Sketch Folder

Open Serial Plotter

A verbose is a feature that reports all information in a process, function or code. The Arduino Verbose Output helps in displaying the output for each execution step in the Arduino Compilation Process.

A verbose is a feature that reports all information in a process, function or code. The Arduino Verbose Output helps in displaying the output for each execution step in the Arduino Compilation Process.

22 / 35

Which Arduino Boards use the Atmega2560?

Arduino Nano and Fio

Arduino Micro and Due

Arduino Mega and Mega ADK

Arduino Uno and Robot

23 / 35

Which is the software or a programming language used for controlling Arduino?

Assembly Language

C Languages

JAVA

Any Language

A program for Arduino can be written in any programming language for a compiler that produces binary machine code for the target processor.

A program for Arduino can be written in any programming language for a compiler that produces binary machine code for the target processor.

24 / 35

Does the level shifter convert the voltage levels between RS-232 and transistor-transistor logic?

True

False

Level shifters are used in multi-design, different blocks work on different voltage levels. So when a signal passes from one voltage domain to another voltage this is needed particularly when a signal passes from low level to high level.

Level shifters are used in multi-design, different blocks work on different voltage levels. So when a signal passes from one voltage domain to another voltage this is needed particularly when a signal passes from low level to high level.

25 / 35

Which of the following file format is generated once the C code is compiled?

.o

.ino

.c

.h

All C code is compiled to a .o file. This file format is called the Object File Format. The compiler creates these object files during compilation, for each source code and then links each of these together for making the executable file for that language.

All C code is compiled to a .o file. This file format is called the Object File Format. The compiler creates these object files during compilation, for each source code and then links each of these together for making the executable file for that language.

26 / 35

What compiler toolchain is used to compile the Arduino Sketches?

AVR-G++/GCC

Python

PowerShell

Perl

The AVR-GCC/G++ software is a compiler that can take C/C++ code as input and translate or compile it into Binary Code that follows the instruction set for the AVR Microcontrollers. They’re used in the Arduino software since most Arduino Boards use the AVR Microcontroller family.

The AVR-GCC/G++ software is a compiler that can take C/C++ code as input and translate or compile it into Binary Code that follows the instruction set for the AVR Microcontrollers. They’re used in the Arduino software since most Arduino Boards use the AVR Microcontroller family.

27 / 35

How many configuration files are there which allow us to customize the architecture in an Arduino in order to add support for custom boards?

1

2

3

4

There are 3 configuration files that allow a person to tweak the configurations. These include the following files; platform.txt, boards.txt, and programmers.txt. These files are all really important in defining the architecture for different processors.

There are 3 configuration files that allow a person to tweak the configurations. These include the following files; platform.txt, boards.txt, and programmers.txt. These files are all really important in defining the architecture for different processors.

28 / 35

How many timers does the Atmega2560 have?

2

4

1

6

The Atmega2560 has a total of 6 timers, of which 2 are 8-bit timers and 4 are 16-bit timers. The number of bits here represents the resolution of the timers, I.e. the number of bits each timer can store.

The Atmega2560 has a total of 6 timers, of which 2 are 8-bit timers and 4 are 16-bit timers. The number of bits here represents the resolution of the timers, I.e. the number of bits each timer can store.

29 / 35

What is the default bootloader of the Arduino UNO?

GAG

Optiboot bootloader

AIR-boot

Bare box

The optiboot bootloader will take 512 bytes, leaving 32256 bytes for the application code. Due to its small size, larger up-loadable sketch size is achieved.

The optiboot bootloader will take 512 bytes, leaving 32256 bytes for the application code. Due to its small size, larger up-loadable sketch size is achieved.

30 / 35

What is the use of the SD.h Library in Arduino?

To communicate with the internet

To communicate with the SD Card Module

To communicate with another microcontroller

To communicate with the computer

The SD.h Library in Arduino allows for communications between the Arduino Board and an SD Card Module for storage and retrieval of data. It is dependent on the sdfatlib library which works on FAT16 and FAT32 filesystems.

The SD.h Library in Arduino allows for communications between the Arduino Board and an SD Card Module for storage and retrieval of data. It is dependent on the sdfatlib library which works on FAT16 and FAT32 filesystems.

31 / 35

How many architectures does the Arduino subfolder in the Hardware section contain?

2

3

4

9

The Arduino subfolder of the Hardware section contains support for 2 architectures; AVR and SAM. The AVR Microcontrollers are included in the most common Arduino boards like the Uno, Nano, Mega, etc. However, some Arduino Boards like the Arduino Due don’t use AVR but use the SAM 32-bit ARM processors.

The Arduino subfolder of the Hardware section contains support for 2 architectures; AVR and SAM. The AVR Microcontrollers are included in the most common Arduino boards like the Uno, Nano, Mega, etc. However, some Arduino Boards like the Arduino Due don’t use AVR but use the SAM 32-bit ARM processors.

32 / 35

Where does the Arduino IDE search if it needs to find out the name of a type of Arduino Board?

build.txt

boards.txt

build.core

Arduino.h

The different types of Arduino Boards which are also commonly referred to as “Variants” are present in the boards.txt file. This is a particularly important file because it contains the different configuration information for different Arduino Boards like which compiler toolchain to execute on a particular variant.

The different types of Arduino Boards which are also commonly referred to as “Variants” are present in the boards.txt file. This is a particularly important file because it contains the different configuration information for different Arduino Boards like which compiler toolchain to execute on a particular variant.

33 / 35

void setup()
{
Serial.begin(9600);
}

void loop()
{
digitalWrite(10,HIGH);
delay(1000);
digitalWrite(10,LOW);
delay(1000);
}

Milliseconds

Microseconds

Seconds

Minutes

34 / 35

What is the name for the library to manipulate data in and out of the EEPROM of the Arduino Board?

eepROM.h

Eeprom.h

EEPROM.h

eeprom.h

35 / 35

How many types of Arduino do we have?

5

8

6

4

There are 4 Arduino boards and 4 Arduino shields that fit on top of Arduino compatible boards to provide additional capability like connecting to the internet, motor controller, LCD screen controlling, etc.,.

There are 4 Arduino boards and 4 Arduino shields that fit on top of Arduino compatible boards to provide additional capability like connecting to the internet, motor controller, LCD screen controlling, etc.,.

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Arduino MCQ: Arduino Multiple Choice Questions and Answers

Guideline of Arduino MCQ:

You have 40 minutes to take the Arduino MCQs

Your time has been Over.

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