Term
| In generators, what principle is used to convert mechanical motion to electrical energy? |
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Definition
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| When you use the left-hand rule for generators, what is indicated by the middle finger? |
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Definition
| Direction of current flow |
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Term
| The output voltage of an elementary generator is coupled from the armature to the brushes by what devices? |
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Definition
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Term
| An elementary generator consists of a single coil rotating in a magnetic field. Why is NO voltage induced in the coil as it passes through the neutral plane? |
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Definition
| Flux lines are not being cut |
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Term
| What components cause(s) a generator to produce a dc voltage instead of an ac voltage at its output? |
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Definition
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Term
| When two adjacent segments of the commutator on a single-loop dc generator come in contact with the brush at the same time, which of the following conditions occur? |
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Definition
| The output voltage will be zero |
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Term
| In an elementary, single-coil, dc generator with one pair of poles, what is the maximum number of pulsations produced in one revolution? |
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Definition
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Term
| How can you vary the strength of the magnetic field in a dc generator? |
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Definition
| By varying the voltage applied to the electromagnetic field coils |
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Term
| Under which of the following conditions does sparking occur between the brushes and the commutator? |
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Definition
| When there is improper commutation |
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Term
| Distortion of the main field by interaction with the armature field defines what term? |
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Definition
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