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.

What is the signal generated by the code at ‘y’ below if the input to ‘x’ is given as 1100?

A. 11
B. 10
C. 00
D. 01View Answer
Answer» B. 10
Discussion
2.

If we would require a technique which would be able to run the setup() function for ‘n’ times, which one would we use? Choose the correct Combination that works.

A. BC
B. A
C. C
D. BView Answer
Answer» C. C
Discussion
3.

How many times will the code run?

A. 1
B. 3
C. 5
D. 7View Answer
Answer» D. 7View Answer
Discussion
4.

What do we need to do if we want to run the setup() function in an infinite loop?

A. Call the setup() function from a custom named function
B. Call the setup() function from a constructor
C. Call the setup() function from the loop() function
D. Call the setup() function from the destructor
Answer» D. Call the setup() function from the destructor
Discussion
5.

What are the errors in the code given below?

A. 1
B. 2
C. 3
D. 4View Answer
Answer» D. 4View Answer
Discussion
6.

What is the output of the following code if the input voltage to pin1 is 0V,3.3V, 3.2V, and 5V (assuming 0V – 0, 3.2V – 492, 3.3V – 501, 5V -1023)?

A. 0101
B. 1011
C. 1100
D. 1111View Answer
Answer» B. 1011
Discussion
7.

Given below are 2 snippets of code. Which one(s) are/is correct in order to generate an output signal of the form given below?a.

A. Only a
B. Only b
C. Neither a nor b
D. Both a and bView Answer
Answer» E.
Discussion
8.

Is it syntactically correct to write the loop() function over the setup() function while writing an Arduino program?

A. No, it is not syntactically correct
B. Yes, it is syntactically correct but will result in the loop() method executing first
C. Yes, it is syntactically correct and the setup() function will execute first
D. It is syntactically correct but logically wrong
Answer» D. It is syntactically correct but logically wrong
Discussion
9.

Can the setup() function change the value of constant variables?

A. Yes, it can change
B. No, it cannot change
C. Yes, it can change but only integer values
D. Yes, it can change but only byte values
Answer» C. Yes, it can change but only integer values
Discussion
10.

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

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