ECONOMICS
BUSINESS CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Expansion
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Contraction
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Neutral
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Peak
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Trough
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Detailed explanation-1: -Fact 3: The current in the neutral wire is the phasor sum of all the line currents. In a balanced system, when all currents and their power factors are the same, the phasor sum of all line currents is 0A. That’s the reason why there is no need for neutral wire in a balanced system.
Detailed explanation-2: -Delta connected system is a three-wire system. It has 3 phases only, it does not contain a neutral point.
Detailed explanation-3: -Three phase systems may or may not have a neutral wire. A neutral wire allows the three phase system to use a higher voltage while still supporting lower voltage single phase appliances.
Detailed explanation-4: -Neutral is the return path for an AC circuit that carries current in normal conditions. This current could be primarily because of the phase current imbalance. The magnitude of this current is a fraction of the phase current or, in a few cases, even double the phase current.