/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 7 : Alternating Current This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 The emf of an AC source is given by V=200.sin(100πt). The frequency of AC is: 25 Hz 50 Hz 100 Hz 200 Hz 2 / 10 The impedance of R = 10 Ω, L = 0.1 H, f = 50 Hz is 10 Ω 31.4 Ω 33.0 Ω 20 Ω 3 / 10 The RMS value of current whose peak value is 12 A = 6 A 8.5 A 8.48 A 9 A 4 / 10 The resonant frequency of LCR circuit is 12πLC 12πLC 2πLC 2πLC 5 / 10 A 50 Hz current has angular frequency ω = 50 rad/s 100 rad/s 314 rad/s 157 rad/s 6 / 10 The phase difference between current and voltage in a purely capacitive circuit is 0° 45° 90° 180° 7 / 10 The phase difference between current and voltage in a purely resistive circuit is 0° 45° 90° 180° 8 / 10 In LCR circuit, impedance at resonance depends on L C R None 9 / 10 The capacitive reactance XC is given by XC=ωC XC=C/ω XC=ω/C XC=1/ωC 10 / 10 Power factor of an LCR circuit at resonance = 0 0.5 1 ∞ Your score is 0% Restart quiz
