2. Express the following functions as a cosine: a. 10 sin(wt +30°) b. -40 sin(wt - 70°) c. 25 sin(wt -15°) d. 5 sin(wt +230°) 3. For the two signals Va(t) and Va(t) below, draw the phasor diagram for both signals, determine which one leads and by how much: Va(t) = 12 cos(4t-80°) Volts Vb (t) = 10 sin(4t + 20°) Volts 4. Evaluate the following complex numbers, express the results in polar form. a. 3 +4j b. -1- 1j c. -12 + 15j d. 5 - 4j 5. Find the phasors corresponding to each of the following signals: a. v(t) = 12 cos (4t- 200°) Volts b. i(t) = -50 sin(100t + 30°) Amps c. i(t) = -45 cos(6t + 40°) Amps d. v(t) = 8 sin (200t 170°) Volts
2. Express the following functions as a cosine: a. 10 sin(wt +30°) b. -40 sin(wt - 70°) c. 25 sin(wt -15°) d. 5 sin(wt +230°) 3. For the two signals Va(t) and Va(t) below, draw the phasor diagram for both signals, determine which one leads and by how much: Va(t) = 12 cos(4t-80°) Volts Vb (t) = 10 sin(4t + 20°) Volts 4. Evaluate the following complex numbers, express the results in polar form. a. 3 +4j b. -1- 1j c. -12 + 15j d. 5 - 4j 5. Find the phasors corresponding to each of the following signals: a. v(t) = 12 cos (4t- 200°) Volts b. i(t) = -50 sin(100t + 30°) Amps c. i(t) = -45 cos(6t + 40°) Amps d. v(t) = 8 sin (200t 170°) Volts
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.7P: Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor,...
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