Transform the function to a positive value. E(t) = -10 cos (4t + 75)
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Transform the function to a positive
value.
E(t) = -10 cos (4t + 75)
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- Assume that the voltage drop across the resistor, ER, is 78 V; the voltage drop across the capacitor, EC, is 104 V; and the circuit has a total impedance, Z, of 20 . The frequency of the AC voltage is 60 Hz. Find the missing values. ET ER78V EC104V IT IR IC Z20 R XC VA P VARSC PF CAssume that the current flow through the resistor, IR, is 15 A; the current flow through the inductor, IL is 36 A; and the circuit has an apparent power of 10,803 VA. The frequency of the AC voltage is 60 Hz. ET ER EL IT IR15A IL36A Z R XL VA10,803 P VARSL PF LReduce the expression v(t)=5 sin(ωt+45°)+5 cos(ωt−30°) to the form Vm cos(ωt+ θ).
- The voltage across a capacitor C is equal to v(t) = 8 cos(1000t) V. Determine the current i(t) through the capacitor at time t. C=100mu,F and t=8If we know M= S cos(ωt + φ) and N= -Sω sin(ωt + φ), show that when t is zero, we will getS = √( M^2 + N^2/ω^2) and φ = arctan(-N/ωM). Thank you very muchFind the impedance theoretically of a wire if it carries the frequency 10 kHz have a voltage is 8v, the current is 2mA, resistance is 12 kΩ , inductance 27 mH and capacitance 0.2 µf
- The current through a 12-mH inductor is 4 sin 100t A. Find the voltage, across the inductor for 0 < t < π/200 s. A. 1.56 cos 100t VB. 3.12 sin 100t VC. 5.78 cos 100t VD. 4.80 cos 100t VA 160 μF capacitor is connected in series with a 10 Ω resistor. Write the equation of the current when the voltage is 220 Vp? a. 11.4 sin (377t + 59) b. 8.9 sin (377t – 46) c. 9.8 sin (377t + 52) d. 7.2 sin (377t + 46)3. A voltage across a 0.5 H is provided below. What is sinusoidal expression for the current? e =100 sin 20 t4. The voltage across 1 micro farrad capacitor is provided below. What is the sinusoidal expression for the current? e= 30 sin 400 t
- 32. A time domain circuit with v(t) = 100 sin(377t) in 5mS, what is the effective current if the load is 10 ohms? 6.14A 8.67A 7.07A 10A 36. In a series RL circuit, if cos θ = 0.707, the voltage ________ the current by _______. leads, 90 degrees lags, 90 degrees leads, 45 degrees lags, 45 degrees 37. What will happen when an ideal capacitor was installed in parallel with the load? system power factor decreases system power factor increases system will be under voltage system power loss increases 39. Phase angle in a balance circuit has a difference of __________ degrees. 60 90 30 120Use CTFT table and properties to find the numerical value of x(t) at t=0.75 if x(t)= 3 sinc (2t) * sinc (4t) : Select one: a. 0.75 sinc (1.5) b. None of the given options c. 3 sinc (1.5) + 3 sinc (3) d. 3 sinc (1.5) sinc (3) e. 3/8 rect (1.5) rect (3)For t < 0, the capacitor in the given figure is completely discharged. Assume that the switch is thrown at t = 0. Let VS = 15 V, R = 200 Ω, L = 20 mH, and C = 0.1 μF.