Physics ICS Part 2 Online MCQ's Test With Answers

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Physics ICS Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 In Series resonance circuit the impedance of circuit art resonance frequency, is Maximum Minimum It is unequal to R None of above
2 The resonance frequency is given by: fr = 2π√LC fr = 1/2πLC fr = 1/ 2π√LC f1 = 1/ 2πC√L
3 The condition of resonance is: XL = 1/2 Xc X<sub>L</sub> = X<sub>c</sub> X<sub>c</sub> = 4<sub>x2</sub> None of above
4 Power dissipation in A.C circuit is expressed as: P =I<sub>rms</sub> x V<sub>rms</sub> Sinθ IxVCosθ I<sub>rms</sub>xV<sub>rms</sub>Cosθ I<sub>rms</sub> x V<sub>rms</sub> Sin2θ
5 Power dissipation is a pure inductive or in a pure capacitance circuit is: 10<sup>6</sup> 0 10<sup>∘</sup> Maximum
6 Unit of impedance is: Ohm Ohm<sup>-1</sup> no unit Ohm m<sup>-1</sup>
7 Impedance is denoted by: A&nbsp; Z P Q
8 The combined effect of resistance and reactance in circuit is called: Impedance Inductance Capacitance None of above
9 XL= 2πfL 1/2πfL 2πfL fL/2π
10 In A.C circuit of inductor which one is true Voltage leads current by phase angle&nbsp;π/2 Voltage lags current by&nbsp;π/2 Current leads voltage by&nbsp;π/2 Both remain in phase
11 Xc = 1/2πfc 2πfc 2π/fc fc/2π
12 The internal resistance of a capacitor is called: Impedance Resistance Reactance Conductance
13 In A.C circuit through a capacitor which one is: Current leads voltage by 90<sup>∘</sup> Current lags behind voltage by 90<sup>∘</sup> Both will be in phase None of above&nbsp;
14 In purely resistive A.C circuit, instantaneous value of voltage and current: Current lags behind voltage Current leads voltage by&nbsp;π/2 Both are in Phase Voltage leads current by Pase&nbsp;θ=π/2
15 Vrms = 0.7V<sub>∘</sub> <div>0.07V<sub>∘</sub></div> 0.007V<sub>∘</sub> 0.75V<sub>∘</sub>
16 The highest value reached by the voltage or current is one cycle is called: Peak to peak value Peak value <div>Instantaneous value</div> Root mean square value
17 The main reason for world wide use of A.C is because: It is very high power&nbsp; It can be transmitted over long distance It is cheaper to use ALl of above
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