Writing code in sketch

Qus. 1 : The default method(s) in Arduino program is/are

1. Only loop()
2. only setup()
3. setup() and loop()
4. can be either loop() or setup()

Qus. 2 : All Code in an Arduino sketch is processed from

1. Top to bottom
2. Bottom to top
3. Any order
4. None of these

Qus. 3 : Which of the following statement true about a sketch?

1. It is a name that Arduino uses for a program
2. Its the unit of code that is uploaded to run on an Arduino board
3. Both (A) and (B)
4. None of these

Qus. 4 : Which symbol is used in Arduino to calculate modulo

1. #
2. $
3. %
4. !

Qus. 5 : Which command is used to create a delay in the Arduino program?

1. digitalRead()
2. for()
3. pinMode()
4. delay()

Qus. 6 : What types of instructions have the most impact on the programme counter?

1. Call & Jump
2. Getchar & putchar
3. Call & Return
4. Return & Jump

Qus. 7 : The SI unit of resistance is ————.

1. Volt
2. Faraday
3. Ampere
4. Ohm

Qus. 8 : ADC (Analog to Digital converter) on Arduino board is used to convert__ signal into digital signal

1. Analog
2. Digital
3. Both A & B
4. None of the above

Qus. 9 : The command which is used to display the characters in the serial monitor is

1. Serial
2. Serial.type
3. Serial.println
4. Serial.printing

Qus. 10 : Arduino Codes are referred to as____in the Arduino IDE.

1. sketches
2. drawings
3. links
4. notes

Qus. 11 : Statement required in Arduino program to generate one second delay is

1. delay(100);
2. delay(1000);
3. delay(10000);
4. delay(1);

Qus. 12 : The analogRead method in Arduino UNO returns value range

1. 0-255
2. 0-511
3. 0-1023
4. 0-4095

Qus. 13 : Which of the following Function is called only once in Arduino program?

1. loop()
2. setup()
3. selay()
4. digitalWrite()

Qus. 14 : Program written in Arduino IDE is known as

1. Code
2. Source code
3. Sketch
4. Paint

Qus. 15 : The basic program in Arduino IDE contains

1. setup () and loop () function
2. Only setup () function
3. Only loop () function
4. None of these

Qus. 16 : AnalogWrite method can be used for

1. PWM pins
2. Hybrid pins
3. Digital pins
4. None of these

Qus. 17 : In Arduino programming, ____________ function is used to make digital pin HIGH

1. pinMode()
2. digitalWrite()
3. analogWrite()
4. setPin()

Qus. 18 : In Arduino programming, digital pins have ___________possible values

1. Only one
2. Two
3. Three
4. Any number of values

Qus. 19 : Capacitance is measured in

1. Ohm
2. Farad
3. Henry
4. Coulomb

Qus. 20 : The property of any conductor that opposes the flow of electric current through it is known as

1. Capacitance
2. Resistance
3. Inductance
4. None of these

Qus. 21 : What does the setup() function in an Arduino sketch do?

1. Runs continuously in a loop
2. Initializes variables and sets up configurations
3. Executes only when an error occurs
4. Used to include libraries

Qus. 22 : Which Arduino pin is used for analog input?

1. A0 to A5
2. D0 to D13
3. GND
4. 3.3V

Qus. 23 : What is the purpose of the delay() function in Arduino?

1. Pauses the program for a specific amount of time
2. Stops the program permanently
3. Restarts the program
4. Initializes the board

Qus. 24 : Which pin on an Arduino board is typically used for PWM output?

1. Analog pin
2. Digital pin with ~ symbol
3. GND pin
4. Vin pin

Qus. 25 : What is the purpose of the analogWrite() function in Arduino?

1. To read analog signals
2. To output digital signals
3. To output PWM signals
4. To write digital HIGH/LOW values

Qus. 26 : Which of the following sensors can detect motion in Arduino-based IoT projects?

1. MQ-135 gas sensor
2. PIR sensor
3. DHT22
4. BMP280

Qus. 27 : What is the maximum current an Arduino Uno can supply from a digital pin?

1. 10mA
2. 20mA
3. 40mA
4. 100mA

Qus. 28 : Which type of sensor is used to measure light intensity in IoT projects?

1. BMP180
2. LDR
3. MPU6050
4. DS18B20

Qus. 29 : What is the role of the Serial.begin() function in an Arduino sketch?

1. To start the Serial Monitor
2. To set up serial communication and baud rate
3. To write data to the Serial Monitor
4. To end the serial communication

Qus. 30 : What is the role of the DHT22 sensor in IoT projects?

1. Measure light intensity
2. Detect motion
3. Measure temperature and humidity
4. Monitor air pressure

Qus. 31 : Which command is used to create a delay of 1 second in an Arduino program?

1. delay(1);
2. delay(100);
3. delay(1000);
4. delay(60);

Qus. 32 : Which pin on the Arduino Uno is used to reset the board manually?

1. A0
2. GND
3. RST
4. Vin

Qus. 33 : How many GPIO (General Purpose Input/Output) pins are available on an Arduino Uno?

1. 14
2. 16
3. 20
4. 32

Qus. 34 : What does the term "baud rate" refer to in serial communication?

1. The frequency of data transmission in kilobytes
2. The number of bits transmitted per second
3. The power consumption of the device
4. The range of the communication

Qus. 35 : Which sensor is best suited for monitoring air quality in Arduino IoT projects?

1. MQ-135
2. BMP280
3. DS18B20
4. PIR sensor

Qus. 36 : What is the purpose of the tone() function in Arduino?

1. To generate a PWM signal
2. To produce a sound on a buzzer with a specific frequency
3. To control the brightness of an LED
4. To read analog values

Qus. 37 : What is the correct syntax for using the tone() function?

1. tone(pin, frequency, duration)
2. tone(pin, duration, frequency)
3. tone(frequency, pin, duration)
4. tone(pin)

Qus. 38 : What is the typical range of frequencies that can be produced by the tone() function?

1. 1 Hz to 1 kHz
2. 31 Hz to 65535 Hz
3. 100 Hz to 10 kHz
4. 500 Hz to 1 MHz

Qus. 39 : Which Arduino library is typically used to control a servo motor?

1. Servo.h
2. Motor.h
3. Wire.h
4. LCD.h

Qus. 40 : What is the typical range of angles for controlling a servo motor using Arduino?

1. 0 to 90 degrees
2. 0 to 180 degrees
3. 0 to 360 degrees
4. -90 to 90 degrees

Qus. 41 : Which function is used to set the position of a servo motor?

1. servo.attach()
2. servo.write()
3. servo.move()
4. servo.setPosition()

Qus. 42 : Which library is commonly used to control a 16x2 LCD with Arduino?

1. LiquidCrystal.h
2. LCDDriver.h
3. Wire.h
4. Display.h

Qus. 43 : What is the role of the lcd.begin() function in an Arduino program?

1. It initializes the LCD with the number of columns and rows.
2. It prints a message to the LCD.
3. It clears the LCD display.
4. It changes the LCD backlight.

Qus. 44 : How can you display text on the first row of a 16x2 LCD?

1. Use lcd.setCursor(0, 0) and lcd.print("Text").
2. Use lcd.begin(0, 0) and lcd.display("Text").
3. Use lcd.print(0, "Text")
4. Use lcd.text("Text", 0)

Programs

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