Explore topic-wise MCQs in Arduino.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Arduino knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the difference between the INPUT and INPUT_PULLUP arguments in the pinMode() function?

A. They are both the same
B. INPUT supports only analog voltages while INPUT_PULLUP supports only digital voltage readings
C. INPUT takes the default reading as 0 while INPUT_PULLUP takes default reading as 1023
D. INPUT takes the default reading as 1023 while INPUT_PULLUP takes the default reading as 0
Answer» D. INPUT takes the default reading as 1023 while INPUT_PULLUP takes the default reading as 0
Discussion
2.

What are the voltage levels that can be detected if a pin is set to OUTPUT using the pinMode() method and the analogRead() method is used, in the Arduino Uno?

A. 0 and 5V
B. 0 to 5.1V
C. 0 to 5V
D. 0 to 10V
Answer» D. 0 to 10V
Discussion
3.

What are the two modes that the pinMode() method sets for a particular pin?

A. DIGITAL and ANALOG
B. INPUT and OUTPUT
C. TX and RX
D. READ and WRITE
Answer» C. TX and RX
Discussion
4.

What type of signal does the analogWrite() method generate when a pin is set to OUTPUT mode?

A. Digital Signal
B. Pulse Code Modulated Signal
C. Pulse amplitude Modulated Signal
D. Pulse Width Modulated Signal
Answer» E.
Discussion