two-pole dc generator is built with nine turns per coil, 48 coils, and is wave-wound. The field excitation is adjusted to produce 0.00496 weber per pole of flux and is rotated at 183.2 radians per second. Determine the total generated voltage
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A two-pole dc generator is built with nine turns per coil, 48 coils, and is wave-wound. The field excitation is adjusted to produce 0.00496 weber per pole of flux and is rotated at 183.2 radians per second. Determine the total generated voltage
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- The field winding of a 4-pole dc generator consists of 4 coils connected in series, each coil being wound with 1200 turns. When the field is excited, there is a magnetic flux of 0.04 Wb/pole. If the field switch is opened at such a speed that the flux falls to the residual value of 0.004 Wb/pole in 0.1 second, calculate the average value of emf induced across the field winding ter minals.Determine the flux per pole for 6 pole dc machine having 240 wave connected conductors, which generates an open circuit voltage of 500 volt, which is running at 1000 rpm.1.) A 6-pole, 3-phase, 60-Hz alternator has 12 slots per pole and four conductors per slot. The winding is 5/6 pitch. There are 0.025 Wb entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. The winding is wye-connected. Determine the open circuit emf per phase of the alternator. Subject Electrical machine 2
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- A four – pole dc generator armature is lap wound with 60coils. Each coil has 8 turns. Determine the flux/pole required to generate 200V at 1500 rev/min.A 6-pole, 3-phase AC generator has 12 slots per pole and four conductors per slots. The winding is 5/6 pitch. There are 2508000 maxwells entering the armature from each north pole, this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. The winding is wye-connected. Determine the phase and line voltage if the machine is affected by 2nd, 3rd and 5th harmonics.3.An induction motor has a rotor resistance and reactance at standstill of 0.1 ohm and 3.5 ohm respectively. At standstill the voltage induced to the rotor is 60volts per phase. If the slip is 5%, determine the rotor current