Networks Analysis and Synthesis
A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 nF capacitor in the second branch. At resonance frequency is
Answer: C
= 
= 44.67 x 104 rad/sec.
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A network has two branches in parallel. One branch contains impedance Z1 and the other branch has impedance Z2. If it is fed from an ac voltage V of frequency f, the current through Z1 depends, on
Answer: D
In parallel branches, the current through any branch depends only on voltage, impedance and frequency only.
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A capacitor is needed for an ac circuit of 230 V, 50 Hz the peak voltage rating of the capacitor should be
Answer: C
Peak voltage rating = 2 (rms voltage rating).
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In an RC series circuit R = 100 Ω and XC = 10 Ω. In this circuit
Answer: B
In RC circuit the current leads the voltage. 
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The current rating of a cable depends on
Answer: B
Current rating depends only on area of cross-section and hence diameter.
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Which of the following pairs are correctly matched?
1.Brune's realisation : realisation with ideal transformer.
2.Cauer realisation : ladder realisation.
3.Bott Duffin realisation : with non ideal transformer.
Select the answer using the following codes:
Answer: D
Bott Duffins realisation does not use transformer.
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The drift velocity of electrons is
Answer: A
Drift velocity of electrons is very small.
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A dielectric does not have leakage current.
Answer: B
All dielectrics have some leakage current.
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A capacitor stores 0.15C at 5 V. Its capacitance is
Answer: C
Q = CV or 0.15 = C(5) or C = 0.03 F.
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A 0.5 μF capacitor is connected across a 10 V battery. After a long time, the circuit current and voltage across capacitor will be
Answer: B
When the capacitor is fully charged, i = 0 and voltage across capacitor is equal to battery voltage.
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