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Analog Electronics MCQs | Page - 3
Dear candidates you will find MCQ questions of Analog Electronics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
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Q. 21) An amplifier without feedback has a voltage gain of 50, input resistance of 1 KΩ & Output resistance of 2.5KΩ. The input resistance of the current-shunt negative feedback amplifier using the above amplifier with a feedback factor of 0.2 is
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Q. 22) Generally, the gain of a transistor amplifier falls at high frequencies due to the
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Q. 23) In the differential voltage gain & the common mode voltage gain of a differential amplifier are 48db & 2db respectively, then its common mode rejection ratio is
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Q. 24) An amplifier using an opamp with slew rate SR=1v/μsec has a gain of 40dB. if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed
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Q. 25) A 741-type OP-AMP has a gain-bandwidth product of 1MHz. A non-inverting amplifier using this op-amp & having a voltage gain of 20db will exhibit -3db bandwidth of
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Q. 26) An npn BJT has gm=38mA/v, cμ =10¯14 F, cπ =10¯13F and DC current gain β0=90. For this transistor fT & fβ are
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Q. 27) The ideal OP-AMP has the following characteristics.
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Q. 28) The current gain of a bipolar transistor drops at high frequencies because of
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Q. 29) A dc power supply has no-load voltage of 30v, and a full-load voltage of 25v at full-load current of 1A. Its output resistance & load regulation ,respectively are
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Q. 30) Negative feedback in an amplifier
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