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What is the basic 3 phase electrical theory?
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What are the 3 basic types of electrical circuits?
Answer : The three basic types of electrical circuits are: 1. **Series Circuit**: - In a series circuit, all the components (such as resistors, bulbs, etc.) are connected end-to-end, ... electrical systems. Each of these types affects how the current flows and how components behave within the circuit....

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What is the basic theory of fiber optics?
Answer : Fiber optics is a technology that uses thin strands of glass or plastic (called optical fibers) to transmit light signals over long distances. The basic theory behind fiber optics revolves ... using reflection to keep the light inside and carry information across long distances with little loss....

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What is the basic theory of motors?
Answer : The basic theory of motors revolves around the interaction between magnetic fields and electric current to produce motion. Here's a simple breakdown: ### 1. **Electromagnetic Induction**: - ... fields and electric current, which results in rotational motion that can be used for various tasks....

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Rectifier: Line commutated 1 phase and 3 phase half (semi) & fully controlled bridge converters

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What is the connection of 3-phase motor star and delta?

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What is the relation between power in 3 phase delta and star connected system?

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Draw a neat labelled diagram of 3-phase electronic energy meter.

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Explain with the help of a neat diagram the working of a 3-phase autotransformer. Write any two applications.

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A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.

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Explain with a sketch protection of 3-phase induction motor during single phasing.

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Explain the activities carried out during weekly maintenance of 3 phase induction motor.

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Explain working of autotransformer starter for a 3 phase induction motor with neat diagram.

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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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Define slip and synchronous speed of 3 phase induction motor.

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