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

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Q. Assertion (A): In CC amplifier the collector is at ac ground

Reason (R): CC amplifier is also called emitter follower

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Q. The circuit consisting of two transistor connected in series with the d.c. supply voltage is called

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Q. Common emitter transistor has

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Q. The purpose of using negative feedback in a op-amps is to

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Q. A transistor amplifier with 85% efficiency is expected to be

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Q. The advantage of transistor over vacuum tube is

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Q. Which of the following is necessary transistor action?

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Q. If the changes in zener current in a voltage regulator circuit are too large, it can be corrected by using a

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Q. MOS circuits as compared to bipolar circuits take

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Q. Typical values of voltage gain for CE, CB and CC amplifiers are

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Q. For a transistor if αdc = 0.98 and emitter current IE is 2 mA, then collector current will be

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Q. Which of the following circuit can operate class AB for audio power output?

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Q. Ebers Moll model is applicable to

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Q. A FET

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Q. For oscillations to starts, the loop gain A β of the oscillator must be initially

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Q. Pick the Odd one out

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Q. An op-amp is fed from a signal source through resistance R1. If it is to work as sign changer, the feedback resistance Rf should be

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Q. A multivibrator can be used as a

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Q. A multivibrator generates

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