A 4 pole, three-phase, the star-connected alternator has an armature with 120 slots and 4 conductors per slot. It revolves at 1100 rpm. The flux per pole is 0.06 weber. Calculate Frequency of generation, Number of turns, and the emf generated if the winding factor is 0.92 and all the conductors in each phase are in series

A 4 pole, three-phase, the star-connected alternator has an armature with 120 slots and 4 conductors per slot. It revolves at 1100 rpm. The flux per pole is 0.06 weber. Calculate Frequency of generation, Number of turns, and the emf generated if the winding factor is 0.92 and all the conductors in each phase are in series

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

See similar textbooks

Similar questions

What conditions must be met before two alternators can be paralleled together?
Induction motors and welding transformers require magnetizing current, which causes a. lagging power factor. b. leading power factor. c. unity power factor. d. zero power factor.
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
Two similar single phase alternators are operating in parallel. The armature winding resistance of each generator is 0.025 ohm and its synchronous reactance is 0.06 ohm. Calculate the angle between two equal voltages of 230 if the circulating current is 1,000 amperes.
A 3-phase, 8-pole, star-connected alternator has 72 slots on the armature, Each slot has 12 conductors and winding is short chorded by 2 slots. Find distributed factor and pitch factor
A 3-phase, 16-pole alternator has a wye connected armature winding with 144 slots, 10 conductors per slot and runs at 450 rpm. The flux is 40 mWb per pole and the distribution factor is 0.966. What value of the line-to-line voltage in kV?
Calculate the speed and open-circuit line and phase voltages of a 4-pole, 3-phase, 50-Hz, star-connected alternator with 36 slots and 19 conductors per slot. The flux per pole is 0.019 Wb and is sinusoidally distributed.
A 3-phase, 12-pole, star-connected alternator has 180 slots with 10conductors per slot and the conductors of each phase are connectedin series. The coil-span is 144° (electrical). Determine the phase andline values of emf if the machine runs at 600 rpm and the flux per poleis 0.06 weber distributed sinusoidally over the pole.
A 20-pole, Y-connected, three-phase, 400-Hz alternator has 3 coils per phase group. Each coil has 2 turns and the flux per pole is 23 mWb. The coils are connected in two parallel groups. Determine (a) the rotor speed, (b) the number of slots in the armature, (c) the winding factor, (d) the per-phase voltage, and (e) the line voltage.
A 20-pole, star-connected, three-phase alternator rotates at 300 r.p.m. The armature has 360 slots and 6 conductors per slot. The width of the coils is 5/6 of the pole pitch. If the maximum flux per pole, with a sinusoidal distribution, is 0.086 Wb, what will be the values of the emfs? phase and line? I need the procedure to get to that answer. Thank you
A 4 pole, 50 Hz star connected alternator has 15 slots per pole and eachslot has 10 conductors. All the conductors of each phase are connected in series and the winding factor being 0.95. When running on no load for a certain flux per pole, the terminal e.m.f. was 1825 volt. If the windings are lap connected as in a D.C. machine, what would be the emf between the brushes for the same speed and the same flux/pole. Assume sinusoidal distribution
A 6-pole, 3-phase, 60-cycle alternator has 12 slots per pole and four conductors per slot. The winding is 5/6 pitch. There are 2,500,000 maxwells (0.025 weber) 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 of the alternator.