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Unformatted text preview: =v1+v2 is equal to [ ] ) 279 . cos( 62 . 20 ) sin( 67 . 5 ) cos( 82 . 19-= + = t t t v T . Hint: Expand cos’s using formula for angle addition. Note that the last b. Solve the problem using phasors. Show that 16 62 . 20 ˆ j e V-= Note that 0.279=16 o . 6. Circuits using Phasors. The impedance of a branch is given by Z=50+j40 Ω . Calculate a. Resistance b. Reactance c. Admittance d. Conductance e. Susceptance f. Magnitude of the impedance g. Phase angle of the impedance 7. Circuit Problem. A current of i(t) = 3cos(120 π t)-4sin(120 t) A is flowing through a branch with a resistor = 2 Ω , capacitor= 2F and inductor = 2H , all connected in series. Find the expression for the (steady-state) voltage across the branch in Phasor form V ˆ and time-varying form, v(t) ....
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- Fall '04
- Volt, Cos, Vm cos, household RMS voltage, convenient household home