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

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

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

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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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What is stator in 3-phase?
Answer : In a 3-phase motor, the **stator** is the stationary part of the motor. It's the component that creates the magnetic field needed for the motor to operate. The stator consists of ... the magnetic field that drives the rotor. This is how the motor converts electrical energy into mechanical motion....

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

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