Q. Assertion (A): In the circuit shown figure the diode is used to protect the active devices. Transistor T goes into saturation when a positive pulse is applied at base and non conducting

Reason (R): When the current in an inductor is suddenly stopped, a high voltage is induced across it.

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Q. Following figure is a signal conditioning Amplifier, changes gain depending upon the polarity of Vs. What will be circuit voltage gain for + Vs and for - Vs if D2 is ideal.

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Q. The circuit of the figure is an example of feedback of the following type

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Q. Oscillation frequency in Wein bridge oscillator is

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Q. In figure VCC = + 30 V, IC corresponding to Q point is 1 mA. If RC = 5 kΩ and RE = 5 kΩ, VCE corresponding to Q point is

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Q. Symbol shown in figure represents a

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Q. In the op-amp circuit of figure, V0 =

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Q. The re model equivalent circuit shown in figure is for

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Q. For the circuit of figure the input and output Miller resistances are

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Q. In the circuit of figure for sinusoidal input the waveform of the output will be as shown in

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Q. In the case of an amplifier, the normalised voltage gain is given by following equation.
where f0 is zero frequency, fP is pole frequency. For a standard frequency response of the amplifier,

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Q. Figure shows a

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Q. In a CC circuit the current gain is

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Q. For the circuit shown in figure low cut-off frequency is

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Q. In the amplifier circuit figure the quiescent point voltage and current are

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Q. For a BJT, β and a are related as

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Q. The circuit diagram shown in the figure consists of transistors in

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Q. The circuit of figure is called

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Q. In the equivalent circuit of figure voltage gain is

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Q. Figure represents a

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