Electronics and Communication · Science and Technology · UPSC Civil Service

Consider the following :

1. Battery storage

2. Biomass generators

3. Fuel cells

4. Rooftop solar photovoltaic units

How many of the above are considered 'Distributed Energy Resources'?

Consider the following activities :

1. Identification of narcotics on passengers at airports or in aircraft

2. Monitoring of precipitation

3. Tracking the migration of animals

In how many of the above activities can the radars be used ?

Consider the following actions:

1. Detection of car crash/collision 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 actions is the function of accelerometer required?

With reference to Central Bank digital currencies, consider the following statements:

1. It is possible to make payments in a digital currency without using US dollar or SWIFT system.

2. A digital currency can be distributed with a condition programmed into it such as a time- frame for spending it.

Which of the statements given above is/are correct?

Consider the following :

1. Aarogya Setu

2. CoWIN

3. DigiLocker

4. DIKSHA

Which of the above are built on top of open-source digital platforms?

With reference to Web 3·0, consider the following statements :

1. Web 3·0 technology enables people to control their own data.

2. In Web 3·0 world, there can be blockchain based social networks.

3. Web 3·0 is operated by users collectively rather than a corporation.

Which of the statements given above are correct ?

With reference to "Software as a Service (SaaS)", consider the following statements:

1. SaaS buyers can customise the user interface and can change data fields.

2. SaaS users can access their data through their mobile devices.

3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS.

Which of the statements given above are correct?

Consider the following communication technologies :

1. Closed-circuit Television

2. Radio Frequency Identification

3. Wireless Local Area Network

Which of the above are considered Short-Range devices/technologies ?

With reference to street-lighting, how do sodium lamps differ from LED lamps?

1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.

2. As street lights, sodium lamps have a longer life span than LED lamps.

3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.

Select the correct answer using the code given below.