Explore topic-wise MCQs in Arduino.

This section includes 6 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 purpose of the DATA pin in the rotary encoder?

A. To provide direction of motion
B. To power the module
C. To shut down the module
D. To provide analog reference voltage
Answer» B. To power the module
Discussion
2.

What is the maximum output voltage that the rotary encoder can put out on its DATA output pin?

A. 1V
B. 140V
C. 5V
D. 10V
Answer» D. 10V
Discussion
3.

What will happen if we supply a voltage of 25V to the Vcc of the rotary encoder?

A. Damage is caused
B. Module will shut down
C. Module will not respond for the time the voltage is applied
D. Module will function normally
Answer» B. Module will shut down
Discussion
4.

What is the purpose of the CLK pin in the rotary encoder?

A. To provide pulse reference
B. To power the module
C. To shut down the module
D. To provide analog reference voltage
Answer» B. To power the module
Discussion
5.

How many terminals does the rotary encoder have?

A. 1
B. 3
C. 5
D. 4
Answer» D. 4
Discussion
6.

What is the use of the rotary encoder?

A. To measure RPM or speed
B. To provide 3G Connectivity
C. To measure presence of gas
D. To measure Wi-Fi strength
Answer» B. To provide 3G Connectivity
Discussion