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State Faraday's law of electromagnetic induction.
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State and explain Kirchhoff’s law?
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Torque equation and generated emf in rotor of single phase induction motor.
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Is ohm’s law universally applicable for all conducting elements? If not, give examples of elements which do not obey Ohm’s law.
Answer : The answer is no, **Ohm's law is not universally applicable for all conducting elements.** Ohm's law is an empirical rule, not a fundamental law of nature. It accurately describes the ... under stable conditions, but it is far from a universal law for all materials that conduct electricity....

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State two insulators of following types along with their areas of application: (i) Class A (ii) Class E (iii) Class H
Answer : Here are two examples of insulating materials for each specified class, along with their areas of application. These insulation classes are defined by their maximum allowable operating temperature, ... traction motors (used in trains), which operate under severe thermal and mechanical stress....

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State the properties of copper and aluminium which make them good conductors of electricity.
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State why the resistance of the conductor increases with the rise in temperature.
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Give the justification with diagram — "Earthing saves human life during Electrical faults". State adverse effect of improper earthing system.
Answer : ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=14708590942510254801 Justification of "Earthing saves human life during Electrical faults":  As per the above figure ... earthing may cause burns from arcing  Tools plugged into improper earthing circuit may become energized. ...

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State significance of earthing. Draw and explain pipe earthing. State the values of earth resistances for : (i) Substation (ii) Residential wiring (iii) H.T. Line (iv) L.T. Line
Answer : ### 1. Significance of Earthing Earthing (or grounding) is a fundamental safety measure in any electrical installation. Its primary significance is to protect people, equipment, and property from ... to consumers. [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=3390146307772186646...

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State the procedure for laying / installation of underground cable.
Answer : 1) Direct laying Cable: or Trench laying method: ![][1] [1]: https://electrical-engineering.app/?qa=blob&qa_blobid=2239248645105787017 Procedure:  For laying of a cable trench about 1.5m deep ... one cable does not damage the adjacent cable.  Only armored cables are used in this method. ...

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State failure phenomena observed in insulating material. State four reasons for failure of gaseous and solid dielectric materials.
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Explain HRGO and CRGO. State benefits of CRGO for manufacturing of core.
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State advantages of MCB over Fuse. State the standard specifications of MCB available in the market.
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State applications of : (i) PVC paper (ii) Porcelain with type of class based on withstand temperature is insulating material.
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State the type of insulating materials under Class Y and Class B.
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State different types of holders used in wiring installation.
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State the term “Phase” and “Phase difference” in case of alternating qualities.
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Draw the labeled hysteresis loop for an electromagnetic material.
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What is drift current?
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Obtain ohm’s law from the expression for electrical conductivity.
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State one condition for maximum current to be drawn from the cell?
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State the need for strictly following safety rules while working in electrical installations.
Answer : Strictly following safety rules while working in electrical installations is not merely a recommendation; it is an absolute necessity. Electricity is an invisible, powerful, and unforgiving hazard. The rules ... protect the worker, their colleagues, the public, and the property they are working on....

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State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them.
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Define earthing. State its types.
Answer : ### Definition of Earthing **Earthing** (also known as **grounding** in North American English) is the process of connecting the non-current-carrying metallic parts of electrical equipment and ... ** protects the end-user. Both are crucial components of a safe and reliable electrical installation....

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State gaseous and liquid insulating material.
Answer : Insulating materials, also known as dielectrics, are substances that resist the flow of electric current. They are essential in electrical equipment for preventing short circuits, ensuring safety, and ... voltage pulse systems and as a coolant in some high-power electronic devices and transmitters....

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State the material used for making (1) Magnetic Core (2) Fuse element
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State any two trivalent and pentavalent impurities each.
Answer : ### Trivalent Impurities (Group 13 elements) These have 3 valence electrons and create p-type semiconductors. 1. **Boron (B)** 2. **Gallium (Ga)** *(Other examples include Aluminum (Al) and Indium (In) ... *Phosphorus (P)** 2. **Arsenic (As)** *(Another common example is Antimony (Sb).)*...

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