Q. Zinc oxide is a non-linear resistance.

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Q. A square current wave of magnitude 1 A is applied to an element for 5 seconds. The voltage across the element rises linearly from 0 to final value linearly. The element is

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Q. A periodic voltage v(t) = 1 + 4 sin ωt + 2 cos ωt is applied across a 1 ohm resistance. The power dissipated is

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Q. A constant k high pass p section has a characteristic impedance of 300 Ω at f = ∞ . At f = fc, the characteristic impedance will be

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Q. If A = 4∠7°, A² is

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Q. An RC driving point impedance function has zeros at s = - 2 and s = - 5. The admissible poles are

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Q. A 10 μF capacitor is charged from a 5 volt source through a resistance of 10 kΩ. The charging current offer 35 m sec. If the initial voltage on C is - 3 V is

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Q. If an admittance Y(s) has a term Ks, the realization would give

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Q. If the diameter of a wire is doubled, the current carrying capacity of the wire becomes

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Q. An RLC series circuit has R = 7.07 Ω, L = .707 H and C = 7.07 μF. At Half power frequencies the circuit impedance is likely to be

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Q. In a series R, L, C circuit the impedance triangle is the same when XL < XC and XL > XC .

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Q. The zinc can of a dry cell serves as positive terminal.

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Q. Two similar coils have self inductance of 1 mH each. Coefficient of coupling is 0.5. The mutual inductance M is

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Q. The energy stored in a coil is 108 J. It is opened suddenly in 10 ms. The power dissipated instantaneously across the blades of switch is

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Q. A parallel RLC circuit with R1 = 20, L1 = 1/100 and C1 = 1/200 is scaled giving R2 = 10⁴, L2 = 10¯⁴ and C2, the value of C2 is

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Q. Thermistor has a positive temperature coefficient.

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Q. Assertion (A): The function Z(s) = 1/s² + 1 is not positive real.

Reason (R): The degrees of numerator and denominator differ by 2

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Q. Two sinusoidal voltage sources v1 = 50 sin (100t) and v1 = 50 sin (100t + p) are connected in parallel and fed an inductance XL = 2Ω. The cuirent through XL is

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Q. Two voltages 50 V each have a phase difference of 45°. The rms value of resultant sum of the two voltages is

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Q. Volt is equivalent to

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