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 happens to the NO1 and NO2 pins when INT1 and INT2 is HIGH?

A. Gets connected to COM
B. Gets disconnected from COM
C. Gets connected to Vcc
D. Gets connected to GND
Answer» C. Gets connected to Vcc
Discussion
2.

How much time does it take for the relay module to react to a change?

A. 5 to 10 ms
B. 12 to 10 min
C. 52 to 100 ms
D. 5 to 10 s
Answer» B. 12 to 10 min
Discussion
3.

What is the type of output given by the DC Relay Module?

A. Analog Signal
B. AC Signal
C. DC Signal
D. Hybrid Signal
Answer» D. Hybrid Signal
Discussion
4.

What kind of device is the Relay Module?

A. Passive Sensor
B. Active Sensor
C. Radio Device
D. Switching Device
Answer» E.
Discussion
5.

What is the optimum current that is required to operate the Relay Module?

A. 28 A
B. 13 A
C. 210 A
D. 1 A
Answer» B. 13 A
Discussion
6.

What is the use of the COM pin?

A. Input
B. Output
C. Ground
D. Circuit Completion
Answer» E.
Discussion
7.

What will happen if we supply a voltage of 250 kV to the Vcc of the Relay (Dual Channel) module?

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
8.

What is the use of the IN1 and IN2 pin?

A. Input
B. Output
C. Ground
D. Power input
Answer» B. Output
Discussion
9.

How many pins are present in the Relay (Dual Channel) Module?

A. 12
B. 220
C. 13
D. 50
Answer» D. 50
Discussion
10.

What is the use of the Relay (Dual Channel) Module?

A. Monitors Motion
B. Evaluates air pressure
C. Monitors objects
D. Switches circuits
Answer» E.
Discussion