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Question : Read the passage and answer the following questions.
IIT Delhi researchers have designed and fabricated a device that can generate electricity from water drops, raindrops, water streams, and even from ocean waves using "Triboelectric Effect" and "Electrostatic Induction". The device is called "Liquid-solid Interface Triboelectric Nanogenerator". The generated electricity can be stored in batteries for further use. Triboelectric effect is a known phenomenon for a long time, and in this effect, charges are generated when two surfaces are in friction. The best example we see are sparkling lights when we move the blankets/jackets.

The device has a very simple structure consisting of specially designed nanocomposite polymers and contact electrodes and can generate a few Milliwatt mW power, which is sufficient to power small electronic devices like watches, digital thermometers, radio frequency transmitters, healthcare sensors, pedometers. When compared to conventional methods, such as the use of the piezoelectric effect, the present device can generate significantly more electricity.

The researchers successfully incorporated nanostructures into a polymer matrix, which enhanced the film's surface roughness, polarizability, and hydrophobicity, among other characteristics, as a result. Due to the enhancement in the above property, the flexible film is used to fabricate the device where raindrops have just to slide down and can generate electricity. The artificially created rough surface allows to generate more charge and superhydrophobic properties of the solid surface help to roll the water drop without getting stick to the surface.

The IIT Delhi research team also explored the underlying mechanism of the electricity generated when the water drop comes in contact with the solid surface and it is shown that saline water drops generate more electricity. The researchers also showed that the device can even work with ocean waves, where the water is saline, and through the ocean waves contacting the surface of nanocomposite polymer film, electricity is generated.

Question:Name the electronic devices which can be powered with the device mentioned in the passage:
1. Watches
2. Pedometers
3. Refrigerators
4. Radio Frequency Transmitters

 

Option 1: Only 1 and 2
 

Option 2: All 1,2,3, and 4
 

Option 3: Only 3 and 4
 

Option 4: Only 1,2 , and 4

Team Careers360 25th Jan, 2024

Correct Answer: Only 1,2 , and 4


Solution : The correcrt option is 4 i.e  "Only 1, 2, and 4."
Explanation:

 Let's refer to the following lines of the passage:

The device has a very simple structure consisting of specially designed nanocomposite polymers and contact electrodes and can generate a

11 Views

Question : Which health infrastructure component focuses on preventive measures?

Option 1: Primary healthcare centers
  

Option 2: Tertiary hospitals
  

Option 3: Mobile clinics

 

Option 4: Medical colleges

Team Careers360 24th Jan, 2024

Correct Answer: Primary healthcare centers
  


Solution : The correct answer is (A) Primary healthcare centers

Primary healthcare centers are a key component of health infrastructure that focuses on providing primary and preventive healthcare services. These centers are often the first point of contact for individuals seeking healthcare, and they play

23 Views

Question : The term "e-waste" refers to:

Option 1: Waste generated by electronic devices

Option 2: Waste generated by industrial processes

Option 3: Waste generated by healthcare facilities

Option 4: Waste generated by construction activities

Team Careers360 24th Jan, 2024

Correct Answer: Waste generated by electronic devices


Solution : The correct answer is (A) Waste generated by electronic devices.

The term "e-waste" refers to electronic waste, which includes discarded or obsolete electronic devices. These devices can include computers, laptops, smartphones, tablets, televisions, printers, refrigerators, and other electrical or electronic equipment.

14 Views

Question : Case Study: MNO Healthcare Solutions (Continued)

In the planning process for expansion, what should MNO Healthcare Solutions do after identifying various courses of action?

Option 1: Evaluating alternative courses of action
 

Option 2: Identifying potential risks
  

Option 3: Setting objectives and goals

  

Option 4: Allocating resources

Team Careers360 23rd Jan, 2024

Correct Answer: Evaluating alternative courses of action
 


Solution : The correct answer is (a). Evaluating alternative courses of action

This involves assessing the feasibility, advantages, disadvantages, and potential outcomes associated with each course of action. By conducting a comprehensive evaluation, the company can make an informed decision on the most

8 Views

Question : Case Study: MNO Healthcare Solutions (Continued)

In the planning process for expansion, what should MNO Healthcare Solutions do after identifying various courses of action?

Option 1: Evaluating alternative courses of action
    

Option 2: Identifying potential risks
   

Option 3: Setting objectives and goals

 

Option 4: Allocating resources

Team Careers360 23rd Jan, 2024

Correct Answer: Evaluating alternative courses of action
    


Solution : The correct answer is (a). Evaluating alternative courses of action

Evaluating alternative courses of action is often a crucial step, but not necessarily the immediate next one. Depending on the complexity of the expansion plan and the level of detail already

8 Views

Question : Case Study: MNO Healthcare Solutions 

In the planning process for expansion, what should MNO Healthcare Solutions do after identifying various courses of action?

Option 1: Evaluating alternative courses of action
 

Option 2: Identifying potential risks
 

Option 3: Setting objectives and goals

  

Option 4: Allocating resources

Team Careers360 24th Jan, 2024

Correct Answer: Evaluating alternative courses of action
 


Solution : The correct answer is (a). Evaluating alternative courses of action

This evaluation involves assessing the feasibility, benefits, risks, and potential outcomes associated with each option. Through this process, the organization can make an informed decision on which course of action aligns

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