Explain armature reaction in dc generator
Web(iii) Explain why a resistor is needed in series with the armature when starting a DC motor, but is not needed when the motor is operating at its steady-state speed. Q. Answer the following for DC Machines: (i) Explain the armature reaction in DC motor. How the flux is distorted by armature reaction? WebFeb 24, 2012 · This results an armature current flux directed along the brush axis and causes cross magnetization of the main field. This cross …
Explain armature reaction in dc generator
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WebConstruction. A DC generator is also used as a DC motor without changing its construction. Therefore, a DC motor otherwise a DC generator can be generally called a DC machine. … WebFeb 24, 2012 · The armature reaction of alternator or synchronous generator, depends upon the phase angle between, stator armature current and induced voltage across the …
WebSep 26, 2024 · An armature reaction is a reaction between the main field flux and armature flux produced in the armature. In other words, armature reaction is the effect … WebSep 25, 2024 · Armature Reaction in Synchronous Generator. When current flows through the armature winding of the synchronous generator or alternator, the resulting Magnetomotive force (MMF) produces a magnetic flux. This armature flux reacts with the main rotor pole flux and causing the resultant flux in the alternator to become either less …
WebAug 22, 2024 · Effects of Armature Reaction of DC generator. The armature flux produces some effects on the main field flux whenever the two fluxes get interacted. The … WebA: Armature reaction: In DC generator the armature current induces the armature flux and the main poles… Q: 1. Explain and draw armature reaction on working of d.c. generator when brushes along G.N.A?
WebWhen a self-excited compound DC generator supplies load, the terminal voltage is not the same as the generated emE Why? a) voltage drop across the armature resistance will …
WebSubject - Electrical Machines 1Video Name - Armature ReactionChapter - DC MachinesFaculty - Prof. pradnya patkarUpskill and get Placements with Ekeeda Career... r9 outbreak\u0027sThe current flowing through the armature conductors creates a magnetic field, which is called as armature flux. This armature flux distorts and weakens the magnetic flux produced by the main poles. This effect of armature flux on the main flux is known as armature reaction. See more Consider a two pole generator on no-load. Thus, the current in the armature conductors is zero. Under this condition, there is only the main flux (φm) in the machine which is produced by the main poles. This main flux … See more This case shows the condition when the field current and armature currents are acting simultaneously. Hence, there are two fluxes inside the machine, one is produced by the main field poles of the generator and the … See more Now consider the armature carrying current with no current in the field coils. The direction of flux produced by the current in the armature conductors may be determined by cork-screw rule. Refer the figure, the … See more The armature reaction in a DC generator causes the following adverse effects 1. As the total field flux produced by each pole is slightly reduced, … See more dono mcdonalds hojeWebNo. of armature amp-turns/pole for compensating winding=0.7 p Z 2 =0.7 armature amp-turns/pole Commutation: the currents induced in armature conductors of a d.c. generator are alternating. These currents flow in one direction when armature conductors are under N-pole and in the opposite direction when they are under S-pole. dono momomo uzbek tilida skachatWebIn this video of "why Inter-poles are used in DC machine" following topic has been discussed! 1.Armature and field winding 2.Cause and effect of armature rea... r9 O\u0027HigginsWebThe above figure shows a typical no-load saturation curve or open circuit characteristics for all types of DC generators. 2. Internal or Total Characteristic (E/I a) An internal characteristic curve shows the relation … r9 primary\u0027sWebAug 20, 2024 · E g = 𝑃 φ 𝑁 𝑍 60 𝐴 …. ( 1) It is clear from eqn. (1), that for any dc generator Z, P and A are constant so that E g ∝ N ϕ. Therefore, for a given DC generator, the induced … r9 pad\u0027sWebSep 27, 2014 · We have already discussed the effect of armature reaction on the air gap flux in DC Motor and DC Generator in previous articles. Similarly, armature reaction has effect on the air gap flux in case of the alternator also. r9 period\u0027s