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Will the tranformers work on pulsating dc ? as there occurs a change in magnitude of the flux produced
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On which factors does the magnitude of the hysteresis loss depend?

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On what does the magnitude of the hysteresis loss depend?
Answer : The magnitude of the hysteresis loss primarily depends on the following factors: 1. **Material Properties (Magnetic Material)**: - The type of material being used affects the hysteresis loss. ... **, **frequency of alternating magnetic fields**, **material volume**, and **temperature**....

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What will happen if DC supply is given on the primary of a transformer?
Answer : If a DC supply is applied to the primary of a transformer, several things happen: 1. **No Induced Voltage in Secondary**: A transformer works on the principle of electromagnetic ... voltage in the secondary, core saturation, and potentially damaging the transformer due to excessive current....

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There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

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How will the resistivity of a wire change if it is stretched to double its original length without loss of mass?
Answer : When a wire is stretched to double its original length without any loss of mass, the resistivity of the material itself does **not change**. Resistivity is a material property, meaning it is determined by the ... **remains the same**. - The **resistance** of the wire increases by a factor of 4....

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Is there an instantaneous change in the voltage across the capacitor at t 0?
Answer : No, there is no instantaneous change in the voltage across a capacitor at \( t = 0 \). The voltage across a capacitor cannot change instantaneously due to the capacitor's inherent ... switch being turned on or off), the voltage across the capacitor will change gradually, not instantaneously....

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State the modifications to be done in dc series motor to work satisfactorily as ac series motor. State applications of ac series motor.
Answer : ### Modifications to be Done in a DC Series Motor to Work as an AC Series Motor A **DC series motor** is designed to run on direct current (DC), while an **AC series ... provide high torque at startup and withstand variable load conditions, which are typical in transport and industrial settings....

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Who produced AC/DC?
Answer : AC/DC has worked with several producers throughout their career, but the most iconic and long-time producer for the band was **Mutt Lange**. He produced some of their most successful albums, including *Highway ... like *Back in Black* (1980), which remains one of the best-selling albums of all time....

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How is the DC machine connected to work as a Generator?
Answer : To use a DC machine as a generator, it's connected in a specific way to convert mechanical energy into electrical energy. Here's how it works: ### 1. **Mechanical Input* ... mechanical energy into electrical energy through electromagnetic induction, and the commutator ensures the output is DC....

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What changes take place when polarization of dielectric occurs?

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Is impossible to change the voltage across a capacitor instantly as this would produce current?

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How is the displacement current related with rate of change of electric flux?

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How do you evaluate the impact of technological change on workforce skills in transmission?

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What are the impacts of climate change on power generation in the USA?

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Can a transformer work on DC?
Answer : No, a transformer cannot work on DC (Direct Current). Transformers rely on **alternating current (AC)** to function. Here's why: 1. **Principle of Operation**: A transformer works on the ... to work, you need alternating current (AC). DC won't allow the transformer to operate as intended....

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Is electric flux same as electric field intensity?
Answer : No, electric flux and electric field intensity are not the same. They are related but have different meanings. 1. **Electric Field Intensity (E)**: - It refers to the strength and ... the field at a point, electric flux describes the total amount of the field passing through a surface....

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What is electric flux density is electric field referred to as?

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Is flux density the same as intensity?
Answer : No, **flux density** and **intensity** are not the same, though they are related concepts in physics, especially in the context of electromagnetism and waves. ### Flux Density: Flux density refers to ... on the amount of energy transported. Let me know if you want more details on either one!...

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Is electric flux density the same as electric displacement?

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What is the function of a load shedding scheme based on rate of change of frequency?

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Why can't the voltage on a capacitor change abruptly?
Answer : A capacitor's voltage can't change abruptly because of how it stores and releases energy. Here's the simple explanation: A capacitor stores energy in the form of an electric field between its plates. ... you see a smooth transition in the voltage rather than an instant jump. Does that make sense?...

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Will DC charge a capacitor?
Answer : Yes, DC (Direct Current) will charge a capacitor. Here's how it works: When a DC voltage is applied to a capacitor, the capacitor begins to charge. Initially, when the capacitor is uncharged, ... across the capacitor equals the voltage of the DC source. After that, no more current will flow....

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Does an inductor work on DC?
Answer : Yes, an inductor can work with DC (Direct Current), but its behavior is different compared to AC (Alternating Current). Here's how it works with DC: 1. **Initial Behavior ( ... , with AC, the inductor continuously resists changes in current because the current is constantly changing direction....

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What factors cause the major losses produced in a transformer?

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Why is there no reactance in a DC circuit?
Answer : In a DC (Direct Current) circuit, the current flows in one direction only, and the voltage is constant (not alternating). Reactance is a property that comes into play when there is ... magnetic field (for inductance) or charging/discharging behavior (for capacitance), leading to no reactance....

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How do you assess the impacts of climate change on transmission systems?

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What are the two ways in which dynamically induced emf can be produced?
Answer : Dynamically induced electromotive force (emf) can be produced in two main ways: 1. **By moving a conductor through a magnetic field**: When a conductor (like a wire) moves through a ... In both cases, the induced emf is the result of a changing magnetic field relative to the conductor....

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Is there inductive reactance in DC?
Answer : No, there is no inductive reactance in DC (Direct Current). Inductive reactance, which is the opposition to current flow caused by an inductor, only exists in AC (Alternating Current) circuits. In AC, ... is steady. So, there is no reactance in DC after the initial moment when the current starts....

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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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On which factors does electric flux depend?
Answer : Electric flux depends on three main factors: 1. **Electric Field (E):** The strength of the electric field passing through a surface. A stronger electric field means more flux. The electric field is ... electric field is parallel to the surface (\(\theta = 90^\circ\)), the flux is zero....

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How does a rate of change of impedance protection scheme work?

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How does a rate-of-change of frequency (ROCOF) relay work?

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How is displacement current produced between the plates of a capacitor?

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