If synchronous generator operates at unity power factor, what is theresultant magnetic filed distribution across the cross section of the poles.a. NoneO b. Less magnetic field lines moved to leading pole tipO c. More magnetic field lines moved to leading pole tipO d. Less magnetic field lines moved to trailing pole tip

Answered: Image /qna-images/answer/0595e2c8-3e2f-4d9b-84ab-ec6f684c10d8.jpg

If synchronous generator operates at unity power factor, what is the resultant magnetic filed distribution across the cross section of the poles. O a. None O b. Less magnetic field lines moved to leading pole tip O c. More magnetic field lines moved to leading pole tip O d. Less magnetic field lines moved to trailing pole tip

If synchronous generator operates at unity power factor, what is the resultant magnetic filed distribution across the cross section of the poles. O a. None O b. Less magnetic field lines moved to leading pole tip O c. More magnetic field lines moved to leading pole tip O d. Less magnetic field lines moved to trailing pole tip

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

Mention factors causing a permanent magnet generator not to generate emf
Two 30 AC generators are such that one has twice the linear dimensions of the other. The field windings of each are excited to give identical sinusoidal air gap flux density waveform. Both have the same number of stator slots and identical winding patterns. The conductors per slot in big generator in K times that of the smaller one. The value of K to get equal no-load voltage at same frequency is (a)8 (b) 8 1 (d) 7 (c) 4
The simplex lap DC generator has 4 poles, 16 slots, with a constant rpm of 600 rpm and 4 conductors per slot. Determine the following: a. Flux per pole (Ø) b. Commutator Pitch c. Pole Pitch d. Coil Pitch
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.
A 4 pole generator with wave wound armature has 50 slots each having 22 conductors. The flux per pole is 0.01 Wb. At what speed must the armature rotate to give an induced EMF of 220V is,
When the field resistance in the synchronous generator decreased, its flux and terminal voltage: Select one: a. both not affected b. Flux increased and terminal voltage decreased c. Flux decreased and terminal voltage increased d. both decreased e. both increased
Q- In a DC generator, what will be change in emf induced if flux is reduced by 20% and the speed is increased by 20%.
The armature of a two-pole generator is rotating at 3600 r/min. The armature has a simplex lap winding with a total of 1504 conductors. Determine the generated voltage when the flux per pole is 600,000 x 10-8 Wb. 5.5
A 6 pole wave wound d.c. shunt generator has 500 conductors. A generator delivers 50 kW of power at 250 voltage at full load. The resistance of the field circuit is 125 2. Actual brush shift is 10°. Then find the demagnetizing and cross magnetizing ampere turns per pole and how many additional turns must be wound on each pole to eliminate the demagnetizing effect.
There are 144 slots in a 3-phase, 16-pole, 50 Hz., star connected alternator. There are 4 conductors in each slot and all the conductors in a phase are connected in series. Coil span is 1500 electrical and the flux per pole is 0.05 Weber sinusoidallly distributed. Calculate the emf induced per phase.
3) 4 Pole generator has a wave wound armature with 32 conductor per slot. The flux per pole is 40mWb and the speed of the generator is 480rpm. Find the total number of slots to generate an EMF of 409.6V
A 4 pole generator with wave wound armature has 55 slots each having 25 conductors. The flux per pole is 0.02Wb. At what speed must the armature rotate to give an induced EMF of 220V. What will be the voltage developed, if the winding is lap connected and the armature rotates at the same speed.