A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed. The stator has 5 slots per pole per phase and each slot contains 4 conductors arranged in two layers. The coil pitch is 12 slots. With normal excitation and rated speed, the voltage induced per conductor is 25 volts. What is the open-circuit emf between the terminals when this machine is wye-connected and all the conductors per phase are connected in series?
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed....
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux that is sinusoidally distributed. The stator has 5 slots per pole per phase and each slot contains 4 conductors arranged in two layers. The coil pitch is 12 slots. With normal excitation and rated speed, the voltage induced per conductor is 25 volts. What is the open-circuit emf between the terminals when this machine is wye-connected and all the conductors per phase are connected in series?
A 3-phase, 12-pole, star-connected alternator has 24 slots with 43 conductors per slot. The coil-span is 7 slots. Find the phase and line induced EMFs if the flux per pole is 0.064 weber and the machine runs at 720 RPM
A 400 v, 50 Hz, three phase alternator, rated at 75 kVA, is star connected and driven at 1000 r/min. The windings of the alternator have a resistance, per phase, of 0.03 Ω and synchronous reactance, at 50 Hz per phase, of j0.325 Ω. The stator of the alternator has 108 slots, with 8 conductors, per slots, in a double layer. The maximum pole flux is 8.772 x 10-3 Wb. To improve the wave form only 80% of the pole...
Determine the number of stator conductors per slot for a three-phase 50 Hz alternator if the winding is star connected and generates a line voltage of 44kV at 1 500 r/min during open circuit. Take the flux per pole as 0,3 Wb and the distribution factor as 0,96. The coils are full pitched and the stator has 4 slot per pole per phase. Show all work, show all diagram and choose the answer form bellow. Group of answer choices 50...
Consider a 2-pole, 50 Hz, cylindrical rotor ac machine. The air-gap radius is 0.1 m, the air-gap distance is 0.002 m and the air-gap axial length is 0.3 m. The stator winding is excited by a 3-phase, 50 Hz, 5 A (peak), balanced ac current system without rotor excitation. Calculate the air-gap fundamental flux per-pole and the generated fundamental voltage between the terminals of the rotor winding when the rotor is stationary.
A three-phase, 5 kVA, 208 V, four-pole, 60 Hz, wye-connected synchronous machine has negligible stator winding resistance and a synchronous reactance of 8 Wper phase. It is operated in parallel with a three-phase, 208 V, 60 Hz power supply.Determine the excitation voltage and the power angle when the machine is delivering rated kVA at 0.8 pf lagging. Draw the phasor diagram
A 6 pole D-C generator has an armature winding with 684 conductors connected in 12 parallel paths. Calculate the generated voltage in this machine if each pole produces 8410000 maxwells and the armature speed is 1410 rpm. 675.9117 677.9118 677.9117 675.9118 The armature winding of a 6 pole D-C generator has 192 conductors connected in 12 parallel paths. At what speed should the machine be driven if it is to develop 220.4608 volts if each pole produces 1.036E+07 maxwells. 1335...
Q1 Consider a 24 slot machine. This machine is designed to have 4-poles a) If the phase winding 5/6 pitched, draw winding diagram of phase A. b) What is the mechanical angle between the poles of a phase? c) What is the electrical angle between the poles of a phase? d) Calculate the number of coils per phase. e) Each coil has 10 turns. What is the number of turns per phase? f) The phase A current is 5 A....
You are tasked with designing the stator winding distribution of a three-phase, 60 Hz induction motor, whose rated speed will be 900 rpm. You will have only 36 equidistant stator slots at your disposal to place in conductors.(a) Determine and sketch on separate axes the winding distribution of phases a, b and c. Adopt a conductor placement approach that will minimize thegeneration of higher-order harmonics in the rotating magnetic flux wave. Assume you have 132 turns to distribute per phase.(b) Sketch on separate axes the air gap H-field...
A three-phase 4 pole wye connected 220 V, 15 Hp, 50 Hz induction machine (rated conditions) has the following parameters per phase refereed to the stator. RI : 0.29 Ω , R2 0. 14 Ω , Xi-0.50 Ω , X2-0.20 Ω , Xm-1 0.53 Ω The total windage and core losses can be assumed to be a constant 350 W. If the machine is operating at rated voltage and frequency with a 5.5% slip, find the steady-state: (a) 10pts. Mechanical...