Q. In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is

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Q. Assertion (A): A tuned amplifier uses a parallel tuned circuit

Reason (R): A tuned amplifier is used to amplify a narrowband frequencies

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Q. Thermal run away of a transistor occurs when

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Q. JFET has __________ degree of isolation between input and output, and a __________ noise figure.

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Q. The advantage of FET over BJT is

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Q. The MOSFET is almost ideal as a switching device because

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Q. The input and output signals for CE amplifier are always

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Q. In a one pole active low pass filter, the cut off frequency is fc. Then

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Q. Turn off time of a transistor switch is equal to (where ts is storage time and tf is fall time.)

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Q. In a CE amplifier circuit the emitter by pass capacitor is remove. The ac output voltage

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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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