Calculating average power, reactive power, and the power factor A load absorbs S

Question

Calculating average power, reactive power, and the power factor A load absorbs S = 30 kVA at a leading power factor of pf = 0.84. Use this information to calculate the average (P) and reactive (Q) power for the load. Enter comma separated numerical answers with three significant figures. Calculating apparent power and power factor A load operates at a voltage of V_x = 450 V - rms and absorbs P = 10 W and Q =22 VAR of power. Use this information to calculate the apparent power (S) and the power factor (p f) for the load. Enter comma separated numerical answers with three significant figures. Calculating load impedance A load absorbs 81365 W at a lagging power factor of pf = 0.78. If the current flowing through the load is i_x = 0.001 A - rms, determine the impedance of the load. Enter a complex number with three significant figures.

Explanation / Answer

c)

p=81365 watts

p=vicosq=81365

vi=81365/0.78=104314.1026 volt-amps

given i=0.001 amps

v=104314.1026/0.001=104314102.6 volts

impedance z=v/i=104314102.6/0.001=1.043*10^11 ohms.

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