Q. In a differential amplifier, CMRR can be improved by using an increased

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Q. If ac resistance of diode is re, then In CE, BJT amplifier the input impedance is

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Q. The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback (β) would be

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Q. Three cascaded stages have gains of 10, 20 and 25. The overall gain will be

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Q. Find the odd one out

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Q. If the value of C₂ and C₃ are doubled, the oscillation frequency will be

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Q. Which of the following statement about JFET is correct?

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Q. Assertion (A): In Darlington pair, the overall β is product of individual βs

Reason (R): The voltage gain of a base driven amplifier is equal to ac collector voltage divided by ac base voltage

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Q. A Wien bridge oscillator uses Wien bridge for

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Q. A cascade amplifier will have higher cut off frequency

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Q. A Darlington circuit is obtained by connecting

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Q. A CE amplifier has a high input signal. In the wave shape of emitter current

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Q. An inverting voltage feedback is a

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Q. If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the

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Q. In a CE amplifier the Q point is very close to cutoff point on the load line. This results in

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Q. In an op-amp comparator, the positive or negative output is

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Q. In logarithmic amplifiers, output voltage is equal to

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Q. In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition

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Q. Occasionally a discrete amplifier user RF chokes instead of collector resistors. Such amplifiers are inherently

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Q. In oscillator circuits the energy feedback to its input terminal from output is

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