Operational Amplifier and Its Applications MCQs
Practice free Operational Amplifier and Its Applications multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 140 questions — no login required.
Question 91easy
Two I.F. amplifier stages tuned to a frequency of 456 kHz are cascade. What should be the quality factors of the tuned circuits if the bandwidth is to be 10 kHz and single tuned circuit is used?
Question 92easy
Which of the following circuit has the greatest bandwidth?
Question 93easy
A push pull class B amplifier uses two AC 126 transistors, transformer coupled to a speaker of 3 ohms. The turns ratio is 20 and the supply voltage is 9 V. Assumig transformer to be ideal, the maximum collector current will be
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Question 94easy
The power output in above question will be
Question 95easy
The second harmonic distortion in an amplifier is reduced from 5% to 1% due to negative feedback. If the amplifier gain is 1000, the feedback ratio should be
Question 96easy
A sine wave is passed through an amplifier which severely limits it symmetrically. It then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output waveform from this second amplifier?
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Question 97easy
For an amplifier, the coupling method which gives the highest gain is
Question 98easy
For high frequency response of a transistor amplifier, suitable model to use is
Question 99easy
The bandwidth of a differential amplifier is comparable to that of a