Electrical Engineering: Circuit theory MCQ

16. Question

The circuit below is excited by a sinusoidal source. The value of R, in Ω, for which the admittance of the circuit becomes a pure conductance at all frequencies is _____________.

 




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17. Question

In the circuit shown below, the supply voltage is 10 sin(1000 ) volts. The peak value of the steady state current through the 1 Ω resistor, in amperes, is ______.




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18. Question

If the star side of the star-delta transformer shown in the figure is excited by a negative sequence voltage, then

 

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19. Question

In the circuit shown, switch S 2 has been closed for a long time. At time = 0 switch S 1 is closed. At = 0 , the rate of change of current through the inductor, in amperes per second, is _____.




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20. Question

Suppose x1(t) and x2(t) have the Fourier transforms as shown below.

Which one of the following statements is TRUE?




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