ECE :: Network Analysis and Synthesis
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For the circuit shown in the figure, the time constant RC = 1 ms. The input voltage is V1(t) = 2 sin 103 t. The output voltage V0(t) is equal to
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A low-pass filter frequency responce H (jω) = A (ω) ejΦ(ω) does not produce any phase distortion, if
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In a tungsten filament lamp
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An RLC series circuit has R = 8 Ω, XL = 8 Ω and XC = 8 Ω Its impedance is
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Two similar mutually coupled coils have a total inductance of 900 mH and coefficient of coupling 0.5. The self inductance of each coils is
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The function of a choke in a fluorescent lamp is
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A series resonant circuit is fed by a voltage having rms value V. At resonance, the voltage across inductance VL and voltage across capacitance VC are related as
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Calculate i(t) for t ≥ 0, assuming the switch has been in position A for a long time at t = 0, the switch is moved to position B.
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A.
the current at the instant of switching is less than operating current
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B.
the current at the instant of switching is more than operating current
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C.
the current at the instant of switching is equal to operating current
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D.
the current at the instant of switching may be less than or equal to operating current
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= 1.11 mA, 
