Recent content by DT71

I have figured it out...

Homework Statement Sketch the waveforms of the harmonic components in the output and the resultant output voltage Homework Equations Vo= 0.98sin(1600*pi*t) - 0.1cos(3200*pi*t) + 0.1 The Attempt at a Solution I know that the 0.1 will be a straight line The amplitude of the sin wave...

I have worked out the pf to be 0.63 P(rated power) = 2000 w Z=22.31 ohms Would it be correct to use P(rated power)= V^2/R as R remains the same to obtain V(supply voltage)

I'm confused now, how do I calculate the supply voltage required to maintain the appliance at its rated power at 60Hz. I have the rated power and the impedence at 60Hz.

should i be using P=V^2/Z

Thanks, I get the first section now but I don't see how I can work out the supply voltage using the new Z and the rated power.

Homework Statement 240V,50 Hz electrical appliance is rated at 2KW and has a lagging power factor of0.7. a)Determine the appliance's power factor when it is used on a 60Hz supply? b)Calculate the supply voltage required to maintain the appliance at its rated power when operated off a 60Hz...