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State the properties of copper and aluminium which make them good conductors of electricity.
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Compare copper and aluminium on the basis of: (i) Tensile strength (ii) Conductivity (iii) Specific gravity (iv) Application.
Answer : Here's a simple comparison between copper and aluminum based on the four properties you mentioned: ### 1. **Tensile Strength:** - **Copper:** Copper has a higher tensile ... and mechanical applications, while aluminum is preferred where weight, cost, and corrosion resistance are more important....

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Select insulating materials for following parts: (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.
Answer : Here are the insulating materials typically used for each of the given applications: 1. **Insulation between heating element and base plate of electric iron**: ** ... on their insulating properties, heat resistance, dielectric strength, and ability to withstand environmental conditions....

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Explain the suitability of aluminium as an electrical conductor with respect to its mechanical and electrical properties.

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Explain the suitability of copper as an electrical conductor with reference to its mechanical and electrical properties.

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

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State the various lighting calculations methods and describe any one of them.
Answer : There are several methods used for lighting calculations, each suited for different types of lighting design. These methods are generally used to determine the amount of light needed in a given space, ... picture of light levels in specific areas compared to methods like the point-by-point method....

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State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them.

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State Magneto-striction. Draw Hysteresis loop for: (i) High silicon steel (ii) Copper (iii) Soft iron (iv) Wood.

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Which US state produces the most electricity?
Answer : iturn0image0turn0image3turn0image4turn0image5As of 2023, Texas leads the United States in electricity production, generating approximately 526 terawatt-hours (TWh) of electricity. This accounts for about 12% ... fuels and wind energy, and California focusing on nuclear and renewable sources....

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Which conductors do not obey Ohms law?
Answer : Not all conductors obey Ohm's Law. Ohm's Law states that the current passing through a conductor is directly proportional to the voltage across it and inversely proportional to its resistance (I = ... , the current and voltage do not have a simple proportional relationship like Ohm's Law suggests....

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Which factor the copper loss of a transformer depends?
Answer : The copper loss in a transformer depends on the following factors: 1. **Load Current (I)**: Copper loss is directly proportional to the square of the load current. The higher the load current, ... the load on the transformer. The more current and resistance you have, the greater the copper loss....

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Which loss is called as copper loss?
Answer : Copper loss refers to the loss of energy that occurs due to the resistance of the copper windings in electrical devices like transformers and motors. Here's how it happens: - When ... applications. That's why it's important to design systems that minimize copper loss for better efficiency....

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Which loss is called a copper loss?
Answer : Copper loss refers to the loss of energy that occurs due to the resistance of the copper windings in electrical devices, like motors or transformers, when current flows through them. This ... windings when electrical current flows through them, and it contributes to the overall energy loss....

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Is the human body a good conductor of electricity?
Answer : Yes, the human body **can conduct electricity**, but it's not as efficient as metals like copper or aluminum. The body is made up of water and electrolytes (like sodium and potassium), which ... if it flows through vital organs like the heart. So, it's important to handle electricity with caution!...

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State any four properties of conductor material used for overhead conductor.
Answer : Here are four important properties of conductor materials used for overhead conductors: 1. **High Electrical Conductivity**: The material should allow electric current to pass through it ... conductor. These properties ensure efficient and durable operation of overhead power transmission lines....

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Explain the concept of ground loops and how to avoid them.
Answer : A **ground loop** occurs when there are multiple grounding points at different electrical potentials in a system, creating a difference in voltage between them. This can cause unwanted currents to ... from potential ground loop currents, you can prevent most of the issues associated with them....

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What are the basic concepts of household wiring and explain them?

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What are hysteresis and eddy current losses what can be done to minimize them?

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Explain the conditions for setting up negative phase sequence currents in an alternator. Draw the protective scheme to detect them and operate the CB.

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Classify various electric heating methods and explain them briefly.
Answer : Electric heating methods can be classified based on how they convert electrical energy into heat. Here are the main types: ### 1. **Resistive Heating (Joule Heating)** - **How it works:* ... method has its own set of applications based on factors like efficiency, speed, material type, and cost....

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What is a good steady state?
Answer : In the context of electrical systems (or any dynamic system), the **steady state** refers to the condition where all variables (like current, voltage, temperature, etc.) have stabilized and ... expected, with no unwanted fluctuations, and all the variables have reached their final, stable values....

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Make use of load factor and maximum demand tariff to minimize electrical consumption of electrical installation.

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What is the temperature dependence of resistance for conductors insulators and semiconductors?

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How does temperature impact the conductivity of electrical conductors and insulators?
Answer : Temperature has a significant effect on the conductivity of both electrical conductors and insulators, but it affects them in opposite ways. ### 1. **Conductors (e.g., ... designing electronic components, as temperature variations can significantly affect the performance of electrical systems....

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How and why is resistance affected by temperature of conductors?

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What is the effect of temperature on the resistance of conductors and semiconductors?
Answer : The effect of temperature on the resistance of conductors and semiconductors is quite different due to their distinct electrical properties. Let's break it down: ### 1. **Conductors (e.g. ... like resistors, sensors, and circuits, where temperature can affect the overall performance of the system....

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How does increase in temperature affect the resistance of (i) conductors and (ii) insulators ?

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What is the difference between conductors and insulators?

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What is the difference between electrical conductors and insulators?

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Bundled Conductors and Composite Conductors Difference?

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What is the relationship between temperature and resistance in conductors?

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When temperature increases the electrical resistance for conductors and semiconductors?
Answer : The relationship between temperature and electrical resistance varies for conductors and semiconductors. Here's how it works: ### 1. **For Conductors (like metals)**: - As the temperature * ... . This behavior is key in many electronic devices, like temperature sensors, thermistors, and more....

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What is the electrochemical equivalent of aluminium?
Answer : The electrochemical equivalent of aluminium refers to the amount of aluminium deposited or dissolved when a current of 1 ampere flows through an electrolyte for 1 second. For aluminium, the ... 10⁻⁴ grams of aluminium would be deposited or dissolved, depending on the direction of current....

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A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.
Answer : To calculate the all-day efficiency of the transformer, we need to consider the total energy output, the total energy input, and the losses over a 24-hour period. The transformer experiences two types of ... \] ### Final Answer: The all-day efficiency of the transformer is approximately **98.39%**....

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The power input to a 500V 50Hz 6Pole 3 phase induction motor running at 975 rpm is 40 kW. The stator losses are 1kW and friction and windage losses are 2kW. Calculate: (i) Slip (ii) Rotor copper loss (iii) Shaft power (iv) Efficiency

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Which type of amplifier is good?
Answer : The "best" type of amplifier really depends on the application you're using it for. Here are some common types of amplifiers and where they are typically used: ### 1. **Operational ... best bet. The choice depends on your specific needs for power, efficiency, distortion, and application!...

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Which branch is good ECE or EEE?
Answer : Choosing between **ECE (Electronics and Communication Engineering)** and **EEE (Electrical and Electronics Engineering)** depends on your interests, strengths, and career goals. Both branches are closely ... might be helpful to explore the subjects in both fields to see which excites you more!...

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List different starting methods of three phase synchronous motor. Explain any one of them.
Answer : There are several methods to start a three-phase synchronous motor, and these methods are used to overcome the challenges of starting synchronous motors, as they require high starting torque. Some ... used because it allows the motor to start smoothly without the need for complex external equipment....

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What state produces the most electricity in the US?

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What type of material is used to make the armature core?
Answer : The armature core is typically made from **silicon steel** or **laminated steel**. Here's why these materials are chosen: 1. **Silicon Steel**: This material is commonly ... materials help enhance the performance and efficiency of the armature in electrical machines like motors and generators....

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Who make fiber optics?
Answer : Fiber optics are made by a variety of companies and manufacturers that specialize in optical communications and related technologies. Some well-known companies that make fiber optic cables include: ... specific types of fiber optics, such as those for medical applications or industrial use....

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What materials are used to make LEDs?
Answer : LEDs (Light Emitting Diodes) are made from semiconductor materials, which are key to their ability to emit light when electrical current passes through them. The main materials used to make LEDs ... are carefully chosen based on the LED's color, brightness, efficiency, and intended application....

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