/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 average power in a pure resistor circuit is VrmsIrms.cosϕ 0 V0I0 VrmsIrms.sinϕ 2 / 10 The equation V = V0 sin(ωt) represents DC voltage Steady voltage Alternating voltage Pulsating current 3 / 10 The phase angle φ between voltage and current in LCR circuit is given by tanϕ=R/(XC−XL) tanϕ=(XL−XC)/R tanϕ=Xc/XL tanϕ=XL/XC 4 / 10 At resonance, the impedance of LCR circuit is R XL XC Infinite 5 / 10 The rms current in 100 Ω resistor when 220 V rms is applied = 1.1 A 2.2 A 3.3 A 4.4 A 6 / 10 A step-up transformer increases voltage from 220 V to 2200 V. Ratio Ns : Np = 1 : 10 10 : 1 1 : 100 100 : 1 7 / 10 Power loss in a pure inductor is Maximum Minimum Zero Constant 8 / 10 A 50 Hz current has angular frequency ω = 50 rad/s 100 rad/s 314 rad/s 157 rad/s 9 / 10 The resonant frequency of LCR circuit is 12πLC 12πLC 2πLC 2πLC 10 / 10 At resonance, the current in LCR circuit is Maximum Minimum Zero Constant Your score is 0% Restart quiz
