Concept explainers
Derive the expression for the voltage across a200-mH inductor when its current is:
a.
b.
c.
d.
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Principles and Applications of Electrical Engineering
- Assume that the voltage drop across the resistor, ER, is 78 V, that the voltage drop across the inductor, EL, is 104 V, and the circuit has a total impedance, Z, of 20 . The frequency of the AC voltage is 60 Hz. ETITZ20VAPFER78VIRRPEL104VILXLVARsLLarrow_forwarda 20mH inductor draws a current of i(t) = 100 sin(100t). Find the voltage %3D equation 200 sin100t 200 cos100t 2000 sin100t 2000 cos100tarrow_forwardFundamentals of Electrical Engineering 2020/2021 Dr. Yaseen H. Tahir xample: (example 15-3, page 388, David) (H. W.) A 1 MF capacitance is to be constructed from rolled-up sheets of aluminum foil separated by a layer of paper 0.1 mm thick. Calculate the required area for each sheet of foil if the relative permittivity of the paper is 6. Jution:arrow_forward
- 2_53528980697... -> For the circuit shown below, detemine the voltage of the -j10 2 capacitive reactance. -j5 0 ILOA(T) ==j102 jlon is Q 102 O 0.5L-90 52 A.arrow_forwardA series R-L-C circuits consists of resistor of 100 ohms. an inductor of 0. 318H and a capacitor of unknown value. When this circuit is energised by 230 Z 0° V. 50HZ sinusoidal supply. the current was found to be 2.3 20° amperes. Find (i) value of capacitor in microfarad (ii)Voltage across the inductor and (iii)total power consumed.arrow_forwardQUESTION 4 A 1kO resistor, a 5mH ideal inductor, and a 1nF capacitor are connected in parallel. Find the total impedance if a 12kHz voltage is applied across the circuit. O 1.26KNL79.9* O 1.890412.4° O 1.61kQ<-74.4° O 3620268.8°arrow_forward
- What is a true statement about the capacitors connected in series illustrated below? с 30 HH AV O The energy stored in the capacitor of capacitance 3C is nine times larger than the energy stored in the capacitor of capacitance C O The energy stored in each capacitor is the same. O The energy stored in the capacitor of capacitance 3C is three times larger than the energy stored in the capacitor of capacitance C. O The energy stored in the capacitor of capacitance 3C is three times smaller than the energy stored in the capacitor of capacitance C. O The energy stored in the capacitor of capacitance 3C is nine times smaller than the energy stored in the capacitor of capacitance C. 4arrow_forward5. Suppose the following circuit is left open for a long time. 5000 22 24 V (a) What is the facial curren What is the carte II What is the ches What is the not the pos 80mF when we close thei 90s after we close the switch? dissipe the resistor 90s arter ene capacitor ons after we close the suit Close the switchi difference across the spacitor 008 after we close the switch across the resisto we close the swit 12 the potential (g) What is the energy stored in the capacitor 90s after we close the switch? (h) What is the energy dissipated by the resistor during the first 90s since the switch is closed?arrow_forwardConsider the circuit in figure given below: A B The capacitor C is initially charged. At time 0, the switch is connected from A to B and the voltage across the capacitor is measured. The following data are recorded by a data acquisition system: t(s) 0.0 0.1 0.2 0.3 0.4 0.5 V(V) 4.98 1.84 0.68 0.25 0.09 0.03 (a) Determine the linear correlation coefficient betweent and V. (b) Determine the linear correlation coefficient between t and In(V).arrow_forward
- 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 tarrow_forwardA circuit is designed with an AC source of max voltage 12 and frequency 60 Hz. The circuit has a resistance of 1050 Ohms, an inductance of 0.06 Henrys, and a capacitance of 0.009 coulombs per volt. - omega for source in rad/s? - omegaR for circuit? -XL? -XC? -phi in radians? -Z? -imax?arrow_forward5. Find the capacitor voltage in the network shown in figure. If the switch closes at t-0. Assume zero initial conditions. Also find the time constant, rise time, and settling time for the capacitor voltage 1=0 ww 1.802 0.79 Farrow_forward
- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning