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Why is water not used as a dielectric?

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Why is water not used as a dielectric?

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in Electrical Engineering

Why is water a dielectric constant?

Why is water a dielectric constant?
Answer : Water is considered a dielectric material because it has a **high dielectric constant** (around 80 at room temperature). The dielectric constant (also known as relative permittivity) ... an excellent insulator in some situations and a good dielectric material for certain electrical applications....

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in Electrical Engineering

Why electric field inside a dielectric is not zero?

Why electric field inside a dielectric is not zero?

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in Electrical Engineering

Is water a dielectric?

Is water a dielectric?
Answer : Yes, water is a dielectric material, but it's important to note that it behaves differently from many other common dielectrics. A **dielectric** is a material that does not conduct ... is a dielectric, but with its own unique characteristics, especially when considering pure vs. impure water!...

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in Electrical Engineering

Is water a dielectric material?

Is water a dielectric material?
Answer : Yes, water is considered a dielectric material, but it's important to clarify that it is a *polar* dielectric material. This means that water molecules have a positive charge on one side (the ... as a dielectric, it isn't always as effective in real-world situations where impurities are present....

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in Electrical Engineering

Why water is used in specific gravity?

Why water is used in specific gravity?
Answer : Water is used as a reference in specific gravity because it has a well-defined density at standard conditions, making it an easy and consistent reference point for comparison. Specific gravity is ... float. This makes water an easy and practical reference to use for determining specific gravity....

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Why are primary cells such as voltaic cells not rechargeable while secondary cells such as the lead storage cells rechargeable?

Why are primary cells such as voltaic cells not rechargeable while secondary cells such as the lead storage cells rechargeable?

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in Electrical Engineering

Why PIN diode is used as a switch?

Why PIN diode is used as a switch?
Answer : A PIN diode is used as a switch because of its ability to act as both a high-speed switch and a variable resistor, depending on the biasing conditions. Here's why it works well ... low resistance states, making it effective in high-frequency circuits where fast and reliable switching is required....

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in Electrical Engineering

Why MOSFET is used as a switch?

Why MOSFET is used as a switch?

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Why does the emf of a battery decrease as it is used?

Why does the emf of a battery decrease as it is used?
Answer : The electromotive force (emf) of a battery decreases as it is used because of internal resistance and chemical changes happening inside the battery. Here's a simple breakdown of why this happens: 1. ... is nearly drained, it can no longer produce the same voltage as when it was fully charged....

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in Electrical Engineering

Why is a diode used as a rectifier?

Why is a diode used as a rectifier?
Answer : A diode is used as a rectifier because it allows current to flow in only one direction, which is the key property needed to convert alternating current (AC) to direct current (DC). Here's a simple ... and allow it in the other makes it perfect for turning AC into DC, which is what rectifiers do!...

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Why BJT is used as a switch?

Why BJT is used as a switch?

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Why is a galvanometer not used to measure AC current?

Why is a galvanometer not used to measure AC current?

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Why is a hydrometer not used to measure the state of charge of a nickel-cadmium battery?

Why is a hydrometer not used to measure the state of charge of a nickel-cadmium battery?

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in Electrical Engineering

Is glass a dielectric or not?

Is glass a dielectric or not?
Answer : Yes, glass is a **dielectric** material. A dielectric is an insulating material that does not conduct electricity but can support electrostatic fields. Glass has a very high ... often used in capacitors, insulators, and other electrical applications where non-conductive materials are needed....

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in Electrical Engineering

Why is BJT used as an amplifier?

Why is BJT used as an amplifier?
Answer : A Bipolar Junction Transistor (BJT) is commonly used as an amplifier because it can take a small input signal (usually voltage or current) and produce a larger output signal, ... amplification. This makes them versatile and widely used in various electronic devices for signal processing....

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Why BJT is used as an amplifier?

Why BJT is used as an amplifier?
Answer : A **BJT (Bipolar Junction Transistor)** is used as an amplifier because it can control the flow of a large current using a much smaller input current, which is the fundamental principle behind ... signal and amplify it into a much larger output signal, both in terms of current and voltage....

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Why FET is used as switch?

Why FET is used as switch?

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Why is AC not used in galvanometer?

Why is AC not used in galvanometer?

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Why DC voltage is not used in transformer?

Why DC voltage is not used in transformer?

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Why is Peltier not used in AC?

Why is Peltier not used in AC?

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Why series circuit is not commonly used?

Why series circuit is not commonly used?
Answer : Series circuits are not commonly used in most electrical systems for a few key reasons: 1. **Dependence on All Components**: In a series circuit, if one component (like a bulb ... , like home wiring, because they allow components to work independently and provide more consistent power distribution....

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in Electrical Engineering

Why AC is not used in capacitor?

Why AC is not used in capacitor?

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Why is DC used for charging batteries not AC?

Why is DC used for charging batteries not AC?

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Why is mercury not used in batteries?

Why is mercury not used in batteries?

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Why DC is not used in transmission line?

Why DC is not used in transmission line?

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Why is DC not used in transmission?

Why is DC not used in transmission?

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Why is DC not used in transmission lines?

Why is DC not used in transmission lines?
Answer : DC (Direct Current) is generally not used in transmission lines for several key reasons: ### 1. **Power Losses**: - In AC (Alternating Current) transmission, power losses are lower ... cases where its advantages outweigh the drawbacks, like in HVDC systems for long-distance or underwater cables....

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in Electrical Engineering

Why ACB is not used in high voltage?

Why ACB is not used in high voltage?

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Why cycloconverter is not used?

Why cycloconverter is not used?
Answer : Cycloconverters are not commonly used in many applications due to a few key reasons: ### 1. **Poor Output Waveform Quality**: Cycloconverters produce a non-sinusoidal output, ... cost have limited their widespread use compared to alternatives like modern inverters and variable-frequency drives....

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in Electrical Engineering

Why half wave rectifier is not practically used?

Why half wave rectifier is not practically used?
Answer : A half-wave rectifier is not practically used for a few reasons: 1. **Inefficient Power Use**: In a half-wave rectifier, only half of the input signal is used, meaning the ... rarely used in practical applications, as more efficient and smoother alternatives like full-wave rectifiers are preferred....

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in Electrical Engineering

Why transformer is not used in half wave rectifier?

Why transformer is not used in half wave rectifier?
Answer : A transformer is typically not used in a half-wave rectifier circuit for a few reasons: 1. **Inefficient Use of Transformer**: In a half-wave rectifier, only one half of the AC ... transformer. If you want to utilize a transformer effectively, a full-wave rectifier would be the better choice....

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in Electrical Engineering

Why full wave rectifier is not used?

Why full wave rectifier is not used?
Answer : A full-wave rectifier is actually widely used in many applications, but there are certain reasons why it might not be suitable for every situation. Here's why it might not be the best ... rectifiers) outweigh the downsides, such as in power supplies for devices like computers and audio equipment....

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in Electrical Engineering

Why is petrol not used in generators?

Why is petrol not used in generators?

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Why transformer is used only for AC not DC?

Why transformer is used only for AC not DC?
Answer : Transformers are used only for AC (Alternating Current) and not for DC (Direct Current) because of how they operate. A transformer works on the principle of electromagnetic induction. It needs a changing ... field, so no voltage is induced in the secondary coil, and the transformer can't work....

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Why DC transformer is not used?

Why DC transformer is not used?

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Why is DC not used in transformers?

Why is DC not used in transformers?

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Why is DC not used in homes?

Why is DC not used in homes?

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Why is DC current not used in homes?

Why is DC current not used in homes?
Answer : DC (Direct Current) is not used in homes for a few main reasons: 1. **Transmission Losses**: DC is harder to transmit over long distances. The loss of energy during transmission ... applications (like in batteries or electronic devices) but is less suited for large-scale power distribution....

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in Electrical Engineering

Why is DC not used?

Why is DC not used?
Answer : DC (Direct Current) is actually used in a lot of applications, but it's true that in many large-scale power systems, **AC (Alternating Current)** is preferred. Here's why DC isn't as ... used"-it just has certain limitations in power distribution that make AC the better choice for large-scale grids....

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Why DC is not used in home?

Why DC is not used in home?

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Why is DC not used in home?

Why is DC not used in home?

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in Electrical Engineering

Compare fire tube and water tube boilers used in thermal power plants.

Compare fire tube and water tube boilers used in thermal power plants.

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Classify hydropower plants on the basis of water head and state the turbine used for them.

Classify hydropower plants on the basis of water head and state the turbine used for them.

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in Electrical Engineering

Why is water called a matter?

Why is water called a matter?

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Is dielectric constant the same as permittivity?

Is dielectric constant the same as permittivity?

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Is relative permittivity the same as dielectric constant?

Is relative permittivity the same as dielectric constant?
Answer : Yes, **relative permittivity** and **dielectric constant** essentially refer to the same concept, but they are used in slightly different contexts. 1. **Relative Permittivity (εr)**: This ... relative permittivity. Both describe how well a material can store electrical energy in an electric field....

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in Electrical Engineering

Why do we pour distilled water in batteries?

Why do we pour distilled water in batteries?
Answer : We pour distilled water into batteries, especially lead-acid batteries, because it helps maintain the proper electrolyte level. Inside these batteries, there is a mixture of sulfuric acid and water, ... . Using distilled water ensures the battery continues to work smoothly and has a longer lifespan....

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in Electrical Engineering

Can IC 74155 be used as a demultiplexer?

Can IC 74155 be used as a demultiplexer?

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What type of resistor is used as a thermistor?

What type of resistor is used as a thermistor?

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What is a zener diode used as?

What is a zener diode used as?

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