A 40μF capacitor in series with a coil of resistance 8Ω and inductance 80mH is connected to a 200V, 100Hz supply. Calculate: i. The circuit impedance. ii. The current flowing. iii. The phase angle between the voltage and current. iv. The voltage across the coil. v. The voltage across the capacitor.
A 40μF capacitor in series with a coil of resistance 8Ω and inductance 80mH is connected to a 200V, 100Hz supply. Calculate: i. The circuit impedance. ii. The current flowing. iii. The phase angle between the voltage and current. iv. The voltage across the coil. v. The voltage across the capacitor.
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter20: Capacitance In Ac Circuits
Section: Chapter Questions
Problem 7PP: A pure capacitive circuit is connected to a 480-volt, 60-Hz power source. An ammeter indicates a...
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A 40μF capacitor in series with a coil of resistance 8Ω and inductance 80mH is connected to a 200V, 100Hz supply. Calculate:
i. The circuit impedance.
ii. The current flowing.
iii. The phase angle between the voltage and current.
iv. The voltage across the coil.
v. The voltage across the capacitor.
b. A coil of resistance 25Ω and inductance 100mH is connected in series with a capacitance of 0.12μF across a 200V, variable frequency supply. Calculate:
i. The resonant frequency.
ii. The current at resonance.
iii. The factor by which the voltage across the reactance is greater than the supply voltage.
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