Explore topic-wise MCQs in Arduino.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Arduino knowledge and support exam preparation. Choose a topic below to get started.

1.

Can the loop() function be called recursively?

A. Yes, it can be called recursively
B. No, it cannot be called recursively
C. Yes, it can be called recursively but only by the setup() function
D. Yes, it can be called recursively but only twice
Answer» B. No, it cannot be called recursively
Discussion
2.

How to make the loop function run only once but the code inside run infinitely?

A. Create a recursive function call statement
B. Create a nested infinite loop within the loop() function
C. Call the setup() function from the loop() function
D. Call the loop() function from the setup() function
Answer» C. Call the setup() function from the loop() function
Discussion
3.

What is the output given by the code?

A. Infinite Series of 010101…
B. Finite Series of 11111….
C. Finite Series of 0000…
D. Infinite Series of 1010101….View Answer
Answer» E.
Discussion
4.

Can the loop() function be used to replace the functionality of the setup() function?

A. Yes, it can
B. No, it cannot
C. Yes, it can, but only for certain Arduino Boards
D. Yes, it can, but only for a limited time frame
Answer» B. No, it cannot
Discussion
5.

Can a programmer not use the loop function at all in a code?

A. Yes
B. No
C. Yes, but it needs to be called at least once
D. Yes, but it needs to be commented out
Answer» B. No
Discussion
6.

How many times does the code give a digital HIGH signal at pin1?

A. 1
B. 2
C. 3
D. 4View Answer
Answer» C. 3
Discussion
7.

What is the output of the output on the Serial Monitor for the program given below if the input supplied to pin1 is of the form 0111?

A. -1 0 1 1
B. -1 0 0 1 0 1 0
C. 1 0 1 1 0 1 1
D. -1 1 1 0 1 1 0View Answer
Answer» C. 1 0 1 1 0 1 1
Discussion
8.

Is the loop() function a replacement of the main() function in the Arduino Programming Environment?

A. No, it is a replacement for the constructor
B. Yes, it is a replacement
C. Yes, but only for certain Arduino Boards
D. No, it is not a replacement
Answer» E.
Discussion
9.

Can the loop() function be used to call another function that is custom defined by the programmer?

A. Yes, it can call
B. No, it cannot call
C. Yes, it can call but only functions with no return values
D. Yes, it can call but only functions with return values
Answer» B. No, it cannot call
Discussion
10.

How many times does the loop() function run on every startup of the Arduino System?

A. 1
B. Depends upon the setup() function
C. Infinitely till the power is supplied to the Arduino
D. 3
Answer» D. 3
Discussion