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How to calculate apparent power in 3-phase?
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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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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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What is the relation between power in 3 phase delta and star 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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How to measure apparent power?
Answer : Apparent power, usually represented as \( S \), is a combination of both real power (\( P \)) and reactive power (\( Q \)) in an AC (Alternating Current) system. It is measured in * ... know the power factor, which indicates how much of the apparent power is converted into useful work (real power)....

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A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

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Calculate speed of motor when delivery maximum voltage. Also calculate the resistance to be added to achieve 3/4th of maximum torque at time of starting.

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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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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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How to calculate capacitor bank value to maintain unity power factor with some suitable example?

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