AC Circuits » Exercise - 19. In an AC series circuit, instantaneous voltage is maximum while instantaneous current is zero. The source is connected to : (a) pure inductor only (b) pure resistance only (c) pure capacitor only (d) (a) or (c)
AC Circuits » Exercise - 18. A series AC circuit has a resistance of 12 Ω and reactance 5 Ω. The impedance of circuit is : (a) 5 Ω (b) 12 Ω (c) 13 Ω (d) 17 Ω
AC Circuits » Exercise - 14. In an AC circuit having R and L in series : (a) voltage leads current (b) current leads voltage (c) voltage and current are increase (d) voltage and current are in opposite phase
5555555555 20. A 200 Ω resistor, a coil with 30 Ω of reactance, and a capacitor of unknown reactance are in series across an ac source. The circuit is at resonance. Circuit impedance ________. (a) is 230 Ω (b) is 170 Ω (c) is 200 Ω (d) cannot be determined
AC Fundamentals » Exercise - 1 24. In a pure capacitor, the voltage ________. (a) is in phase with the current (b) is out of phase with the current (c) lags behind the current by 900 (d) leads the current by 900