ECE 201 - Hw 34 - F11

ECE 201 - Hw 34 - F11 - power in VAR delivered to the load....

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Homework 34 ECE201: Linear Circuit Analysis Due in class: Monday, December 5 th , 2011 Question 1 Compute the effective value of (a) v 1 ( t ) = 5 + cos(20 t ) (b) v 2 ( t ) = 20cos(2 t ) + 10cos(4 t ) (c) v 3 ( t ) = 40cos(2 t ) + 20cos(4 t ) + 20cos(4 t - 45°) (hint: you cannot add effective values directly!) Question 2 For the circuit shown below, R = 5 , Z load = 3 + j 4 , Z C = – j 10 , and ( 29 ( 29 100 2 cos 120 in v t t π = V. (a) Find the complex power absorbed by the load. (b) Computer the apparent power in VA, the average power (in watts), and the reactive
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Unformatted text preview: power in VAR delivered to the load. Question 3 For the circuit shown below, V s = 230 V rms at 60 Hz. The complex powers (in VA) absorbed by the five impedances are S 1 = 100 + j 100, S 2 = 200 + j 100, S 3 = 100 + j 50, S 4 = 400 + j 250, S 5 = 800 + j 700, Find (a) The complex power, the apparent power, and the average power delivered by the source. (b) Find the source current I s in the rectangular and polar form....
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