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Questions and Answers
What is the working principle of a solar cell?
What is the working principle of a solar cell?
Which material is commonly used in the construction of solar cells?
Which material is commonly used in the construction of solar cells?
What is the principle behind the operation of a thermocouple?
What is the principle behind the operation of a thermocouple?
What is the function of a thermistor in electronic devices?
What is the function of a thermistor in electronic devices?
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What is the primary focus of thermodynamics?
What is the primary focus of thermodynamics?
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Study Notes
Solar Cells
- Solar cells convert sunlight into electricity through the photovoltaic effect.
- When light hits the semiconductor material, it excites electrons, generating a flow of electric current.
- Commonly used materials include silicon, which is abundant, efficient, and cost-effective for solar cell production.
Thermocouples
- Thermocouples operate based on the Seebeck effect, where two different metals joined at one end produce a voltage proportional to temperature difference.
- This voltage can be measured to determine the temperature, making thermocouples useful for temperature sensing in various applications.
Thermistors
- Thermistors are temperature-sensitive resistors used in electronic devices for temperature measurement and control.
- They either increase (NTC - Negative Temperature Coefficient) or decrease (PTC - Positive Temperature Coefficient) resistance with temperature changes, making them ideal for monitoring and regulating temperatures.
Thermodynamics
- Thermodynamics is the study of energy, heat, and the laws governing the conversion and transfer of energy.
- It focuses on understanding how thermal energy is converted to and from other energy forms and the physical properties of systems.
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Description
Test your knowledge of Thermal Physics in the context of Electronics and Communication Engineering with this quiz. Explore topics such as Green Energy Materials, Light Sources, Semiconductor Physics, PN Junctions, LEDs, Quantum efficiency, modulation of LEDs, and Laser Diodes. This quiz is an excellent way to reinforce your understanding of these fundamental concepts.
