Question

The power supplied to a balanced star connected load is:

• A. \( \sqrt{3} V_L I_L \cos \phi \)
• B. \( 3 V_P I_P \)
• C. \( \sqrt{3} V_P I_P \sin \phi \)
• D. \( \sqrt{3} V_L I_L \sin \phi \)

Hint:

The power in a star-connected system depends on the line voltage, line current, and the phase difference between them.

Answer 1

The Correct Option is A

For a balanced star-connected load, the power supplied is given by \( \sqrt{3} V_L I_L \cos \phi \), where \( V_L \) is the line voltage, \( I_L \) is the line current, and \( \phi \) is the phase angle between voltage and current.