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Electrical Engineering - Three-Phase Systems in Power Applications

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Exercise : Three-Phase Systems in Power Applications - General Questions
1.
In a three-phase system, the voltages are separated by
45°
90°
120°
180°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a three-phase system, when the loads are perfectly balanced, the neutral current is
zero
one-third of maximum
two-thirds of maximum
at maximum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In a -connected source driving a -connected load, the
load voltage and line voltage are one-third the source voltage for a given phase
load voltage and line voltage are two-thirds the source voltage for a given phase
load voltage and line voltage cancel for a given phase
load voltage, line voltage, and source phase voltage are all equal for a given phase
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
In a certain three-wire Y-connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are
2,000 V
6,000 V
666 V
3,464 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
In a -connected source feeding a Y-connected load,
each phase voltage equals the difference of the corresponding load voltages
each phase voltage equals the corresponding load voltage
each phase voltage is one-third the corresponding load voltage
each phase voltage is 60° out of phase with the corresponding load voltage
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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