Physics FSC Part 2 Online MCQ's Test With Answers

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Physics FSC Part 2 Online MCQ's Test

Sr. # Questions Answers Choice
1 In A.C circuit of inductor which one is true Voltage leads current by phase angle π/2 Voltage lags current by π/2 Current leads voltage by π/2 Both remain in phase
2 Xc = 1/2πfc 2πfc 2π/fc fc/2π
3 The internal resistance of a capacitor is called: Impedance Resistance Reactance Conductance
4 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;
5 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
6 Vrms = 0.7V<sub>∘</sub> <div>0.07V<sub>∘</sub></div> 0.007V<sub>∘</sub> 0.75V<sub>∘</sub>
7 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
8 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
9 The magnitude of back emf: Increases with sped of motor Decreases with speed of motor Remains same&nbsp; None of above
10 Commutator was invented by: William bills William Gates William tells William Sturgeon
11 DC generator by william Sturgeon in: 1894 1961 1834 1961
12 A current generator device converts: Mechanical energy into chemical energy Chemical energy into electrical energy Mechanical energy into electrical energy Both b and c
13 Energy density of an inductor is: UM=1/2μ<sub>∘</sub>/B<sup>2</sup> Um = 2μ<sub>∘</sub>/B UM = 1/2B<sup>2</sup>/μ<sub>∘</sub> Um = 2B<sup>2</sup>/μ<sub>∘</sub>
14 Energy stored in an inductor is: 1/2L<sup>2</sup>I 1/2L<sup>2</sup>/I <sub>1/2LI</sub><sup>2</sup> 1/2LI
15 In self induction A coil is connected in__________ with battery and a rheostat. Parallel Series Both A and B None of above
16 The Si unit of Mutual inductance is: VA<sup>-1</sup>S<sup>-1</sup> VAS<sup>-1</sup> VSA<sup>-1</sup> ASV<sup>-1</sup>
17 If force in the direction of velocity of conductor,  then induced current is directed, Anti clockwise Clock wise At equilibrium None of above
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