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1. What is a dielectric material in electrical engineering?
Ans. A dielectric material is a substance that is a poor conductor of electricity but can support an electric field. It is commonly used in capacitors to store electrical energy.
2. How does a dielectric material affect the capacitance of a capacitor?
Ans. The presence of a dielectric material in a capacitor increases the capacitance as it reduces the electric field strength between the plates, allowing more charge to be stored.
3. What are the different types of dielectric materials used in electrical engineering?
Ans. Common dielectric materials include ceramics, plastics, mica, glass, and paper. Each type has its own unique properties that make it suitable for different applications.
4. What is the dielectric strength of a material and why is it important?
Ans. Dielectric strength is the maximum electric field that a material can withstand without breaking down. It is important as it determines the maximum voltage that can be applied across the material without causing it to fail.
5. How does temperature affect the dielectric properties of a material?
Ans. Generally, increasing temperature can decrease the dielectric strength of a material. This is important to consider in applications where temperature variations are expected.
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