A three-phase load is balanced if all the three phases have the samea.impedanceb.power factorc.impedance and power factord.none of the above
Question
A three-phase load is balanced if all the three phases have the samea.impedanceb.power factorc.impedance and power factord.none of the above
Solution
A three-phase load is considered balanced if all the three phases have the same impedance and power factor. So, the correct answer is c. impedance and power factor.
Here's why:
a. Impedance: In a balanced three-phase system, the impedance in each phase should be equal. This means that the resistance and reactance in each phase are equal.
b. Power Factor: The power factor in each phase should also be equal in a balanced three-phase system. The power factor is a measure of how effectively the current is being converted into useful work output and it is a function of the phase difference between the current and voltage.
In summary, for a three-phase load to be balanced, both the impedance and power factor in each phase should be equal.
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