UPSC Prelims 2023 – Question 54

Q54. Consider the following actions: 

1. Detection of car crashes/collisions which results in the deployment of airbags almost instantaneously 

2. Detection of accidental free fall of a laptop towards the ground which results in the immediate turning off of the hard drive 

3. Detection of the tilt of the smart-phone which results in the rotation of display between portrait and landscape mode 

In how many of the above lions is the function of the accelerometer required? 

1. Only one 

2. Only two 

3. All three 

4. None 

Correct Answer: Option (c) 

• The accelerometer detects signals that are used to identify major vehicle crash/collisions. Hence, statement 1 is correct. 
• The accelerometers in laptops protect hard drives from damage. If the laptop were to suddenly drop while in use, the accelerometer would detect the sudden free fall and immediately turn off the hard drive to avoid hitting the reading heads into the hard drive platter. Hence, statement 2 is correct. 
• Accelerometers allow the user to understand the surroundings of an item better. For example, smartphones rotate their display between portrait and landscape mode depending on how you tilt the phone. Hence, statement 3 is correct. 

For UPSC Prelims Resources, Click here

For Daily Updates and Study Material:

Join our Telegram Channel – Edukemy for IAS

• 1. Learn through Videos – here
• 2. Be Exam Ready by Practicing Daily MCQs – here
• 3. Daily Newsletter – Get all your Current Affairs Covered – here
• 4. Mains Answer Writing Practice – here

Visit our YouTube Channel – here