A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 *n*F 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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