

Internet Of Things
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Education
•
University
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What does an ultrasonic sensor emit to detect objects?
Back
Sound waves
2.
FLASHCARD QUESTION
Front
Which phenomenon allows an ultrasonic sensor to detect an approaching vehicle?
Back
Reflection of sound waves
3.
FLASHCARD QUESTION
Front
In a smart street lighting system, what ensures that the lights turn off in the morning? Options: Motion sensor, Temperature sensor, Light-dependent resistor (LDR), Humidity sensor
Back
Light-dependent resistor (LDR)
4.
FLASHCARD QUESTION
Front
Why is an ultrasonic sensor a good choice for smart street lighting?
Back
It works in low visibility conditions
5.
FLASHCARD QUESTION
Front
What is a key limitation of ultrasonic sensors in street lighting automation?
Back
They cannot detect stationary objects
6.
FLASHCARD QUESTION
Front
What is the main function of the Arduino UNO in remote controlled car project?
Back
It acts as the brain, processing commands and controlling the motor driver.
7.
FLASHCARD QUESTION
Front
Why do we use the L298N Motor Driver in the robot?
Back
It controls the BO motors because Arduino cannot drive motors directly.
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