Q. In a DC machine, the direct axis is __________

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Q. In a DC machine, the form of flux density distribution (main field only) waveform is __________

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Q. Due to the effect of armature reaction in DC machine, the flux per pole and generated voltage ______ and ________ respectively.

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Q. Armature reaction of an unsaturated DC machine is (in terms of magnetization) ________

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Q. What is the effect of demagnetizing component of armature reaction?

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Q. What is the reason behind short circuit in armature?

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Q. What will happen at poles due to armature reaction in DC generator?

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Q. In DC generator, how armature reaction is produced?

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Q. In a DC generator, the effect of armature reaction on the main pole flux is to _________

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Q. In a DC machine brushes are normally located along GNA.

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Q. Armature reaction at 90° to the main field is called as ____________

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Q. Increase in flux density at one end of the pole is less than the decrease at the other end. This is called as ____________

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Q. Peak flux density in terms of total flux density is given by _________

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Q. Flux density in the interpolar region drops down because of ______

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Q. Which axis undergo shifting as a result of armature reaction?

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Q. Armature reaction in a machine is demagnetizing due to _________

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Q. Which of the following are effects of armature reaction?

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Q. A 250 kW, 400 V, 6-pole dc generator has 720 lap wound conductors. Armature current is ____

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Q. What is the total ampere conductors/pole (in SI) if 600 lap wound conductors carry 120 A current through conductors (P=4)?

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Q. What is the total ampere turns/pole (in AT/pole) if 600 lap wound conductors carry 120 A current through conductors (P=4)?

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