The voltage, v(t) and current i(t) input to a circuit is given by v(t) = 240 cos(2πt) and i(t) = v(t) 2 .What is the Power consumed by the circuit?. P = R T 0 v(t)i(t)dt, where T is the time period of the waveform v(t). (Steps would suce if you cannot quickly get the nal value).

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg. k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m. k