Electric Circuits
A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

 339∠45o V.
 480∠ - 45o V.
 480∠45o V.
 339∠- 45o V.

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Electric Circuits
What is time period T?

 Time taken by an alternating quantity to reach the peak value.
 Time taken by an alternating quantity to complete one full cycle.
 Time taken by an alternating quantity to complete the (-)ve half.
 Time taken by an alternating quantity to complete the (+)ve half.

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Electric Circuits
Atoms have no electric charge because they

 have an equal number of electrons and protons.
 have an equal number of charged and non charged particles.
 have an equal number of neutrons and protons.
 have neutrons in their nuclei.

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