Q. In the equivalent circuit of figure voltage gain is

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Q. Figure represents a

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Q. In a closed loop non-inverting amplifier, constructed using single break-frequency op-amp, bandwidth with feedback can be written as. (f0 - break frequency, β - gain of the feedback circuit, A - open loop voltage gain, Af - closed loop voltage gain)

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Q. Two identical FETs, each characterised by the parameters gm and rd are connected in parallel. The composite FET is then characterised by the parameters

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Q. DC voltage of the order of a few mV can be accurately of measured by

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Q. In a CE amplifier the input impedance is equal to the ratio of

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Q. For a system to work, as oscillator the total phase shift of the loop gain must be equal to

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Q. An amplifier has a large ac input signal. The clipping occurs on both the peaks. The output voltage will be nearly a

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Q. To prevent a DC return between source and load, it is necessary to use

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Q. For a base current of 10 μA, what is the value of collector current in common emitter if βdc = 100

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Q. Which of the following oscillators is suitable for frequencies in the range of mega hertz?

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Q. Consider the following statements : A clamper circuit

1. adds or subtracts a dc voltage to a waveform
2. does not change the waveform
3. amplifiers the waveform

Which are correct?

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Q. A forward voltage of 9 V is applied to a diode in series with a 1 kΩ load resistor. The voltage across load resistor is zero. It indicates that

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Q. Which power amplifier can deliver maximum load power?

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Q. The quiescent collector current IC, and collector to emitter voltage VCE in a CE connection are the values when

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Q. An exponential amplifier has diode in feedback path.

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Q. DC amplifiers have a tendency to be unstable.

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Q. A half wave diode rectifier has a capacitance input filter. If input voltage is Vm sin ωt, PIV is

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Q. An amplifier with loop gain Aβ will be more stable for value of Aβ as

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Q. A CB amplifier has re = 6 Ω, RL = 600 Ω and a = 0.98. The voltage gain is

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