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Which of the following statements is/are true regarding symmetrical balanced three phase supply: 1 Instantaneous values of power in all of the 3 pha
Question

Which of the following statements is/are true regarding symmetrical balanced three phase supply:
1 Instantaneous values of power in all of the 3 phases become zero at same instant.

Phase displacement between different phases of an n-phase system is (360n) electrical except for the two-phase system.\text{Phase displacement between different phases of an } n\text{-phase system is } \left(\frac{360^\circ}{n}\right) \text{ electrical except for the two-phase system.}​​

A.

Neither 1 nor 2

B.

Only 2

C.

Both 1 and 2

D.

Only 1

Correct option is B

In a three-phase system, the phase displacement between the phases is 3603=120, and the instantaneous power is constant, equal to three times the power per phase.\text{In a three-phase system, the phase displacement between the phases is } \frac{360^\circ}{3} = 120^\circ, \text{ and the instantaneous power is constant, equal to three times the power per phase.}​​

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