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

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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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How do capacity factors of renewable energy sources compare to traditional power plants in the USA?

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What is the current capacity of wind power in the USA?

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How does series compensation improve power transmission capacity?

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Why Power Plant Capacity Rated in MW and not in MVA?

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What are the key challenges in expanding nuclear power capacity in the USA?

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How do capacity markets influence power generation decisions in the USA?

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

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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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Define slip and synchronous speed of 3 phase induction motor.

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Write the expression for the instantaneous values of EMFs in a 3-phase circuit.
Answer : In a 3-phase circuit, the instantaneous values of the Electromotive Forces (EMFs) in the three phases can be expressed as sinusoidal functions, assuming a balanced system where the phases are 120° ... , these expressions show how the voltages in each phase are related in both magnitude and phase....

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What are the advantages of 3-phase circuits over single-phase circuits?

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Derive the condition for maximum torque under running condition of a 3 phase induction motor.

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Derive the torque equation of 3 φ I.M. under running condition.k) Explain production of R.M.F. in 3-phase I.M. when 3 φ supply is fed to it. Draw its phasor diagram.

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

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State the relationship between line voltage & phase voltage and line current & phase current in a 3-phase star connected system.

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