Concept explainers
(a) Transform
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Power System Analysis and Design (MindTap Course List)
- The voltage across the terminals of the 5μF capacitor is 30 cos (4000t + 25°) V. Calculate (a) the capacitive reactance; (b) the impedance of the capacitor; (c) the phasor current I; and (d) the steady-state expression for i (t). 5 μF + v iarrow_forwardA 25V, 2.5kHz supply is connected to a network comprising a variable capacitor in parallel with a coil of resistance 250 ohms and inductance 80 mH. Determine, for the condition when the supply current is a minimum the capacitance of the capacitor the dynamic impedance the supply current the upper half-power frequency the value of the circuit impedance at the -3dB frequenciesarrow_forwardIn the series circuit of Fig, the source has voltage amplitude 20.0 V and angular frequency 5.40 x 103 rad/s, the inductance is 6.50 mH, the capacitance is 0.600 µF, and the impedance is 474 Ω. Find (a) the resistance, (b) the current amplitude, (c) the resistor voltage amplitude, (d) the inductor voltage amplitude, and (e) the capacitor voltage amplitudearrow_forward
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- Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning