Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) – Electronics Post

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 Home  Electronics Questions and Answers  Multiple Choice Questions and Answers  Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier )

Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier )  Sasmita

 April 13, 2016

 Multiple Choice Questions and Answers

Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) ……………

*T&C Apply

1. is a part of an Op-amp 2. has one input and one output 3. has two outputs 4. answers (1) and (2)

…………

1. the output is grounded 2. one input is grounded and signal is applied to the other 3. both inputs are connected together 4. the output is not inverted

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1. opposite polarity signals are applied to the inputs 2. the gain is one 3. the outputs are of different amplitudes 4. only one supply voltage is used

http://el ec ectr on oni cs cspost.com /m /m ul ul titi pl pl ee- ch choi ce ce- qu ques titi on ons- an and- an answ er er ss- on on- op op- am am pp- op oper at ati on onal -a -am pl pl ififi er er /

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Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) – Electronics Post ……………

1. both inputs are grounded 2. the outputs are connected together 3. an identical signal appears on both the inputs 4. the output signal are in-phase

………

1. very high 2. very low 3. always unity 4. unpredictable

………

1. very high 2. very low 3. dependent on input voltage 4. about 100

………

1. 1225 2. 10,000 3. 80 dB 4. answers (1) and (3)

………

1. equal to the positive supply voltage 2. equal to the negative supply voltage 3. equal to zero 4. equal to CMRR

……

1. 1 2. 2000 3. 80 dB 4. 100,000

μ

……

1. 700 nA 2. 99.3 μ A 3. 49.7 μ A 4. none of these

μ

……

http://el ectr oni cspost.com /m ul ti pl e- choi ce- ques ti ons- and- answ er s- on- op- am p- oper ati onal -am pl ifi er /

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Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) – Electronics Post

1. 90 V/μs 2. 0.67 V/μ s 3. 1.5 V/μ s 4. none of these

……

1. equal to the input 2. increased 3. fed back to the inverting input 4. fed back to the noninverting input

………

1. reduces the voltage gain of an Op-amp 2. makes the Op-amp oscillate 3. makes linear operation possible 4. answers (1) and (2)

………

1. increases the input and output impedances 2. increases the input impedance and bandwidth 3. decreases the output impedance and bandwidth 4. does not affect impedance or bandwidth

Ω

Ω

………

1. 100,000 2. 1000 3. 101 4. 100

……

1. increases 2. decreases 3. is not affected 4. depends on R i


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……

1. doubles 2. drops to 12.5 3. remains at 25 4. increases slightly

………

1. has a voltage gain of 1 2. is noninverting 3. has no feedback resistor 4. has all of these

1. a.c. signals only 2. d.c. signals only 3. both a.c. and d.c. signals 4. neither d.c. nor a.c. signals

………

1. difference between two base currents 2. average of two base currents 3. collector current divided by current gain 4. none of these

……

1. half of either collector current 2. equal to either collector current 3. two times either collector current 4. equal to the difference in base currents

………

1. collector supply voltage 2. zero 3. emitter supply voltage 4. tail current times base resistance

……

1. difference between two emitter currents 2. sum of two emitter currents 3. collector current divided by current gain 4. collector voltage divided by collector resistance http://el ectr oni cspost.com /m ul ti pl e- choi ce- ques ti ons- and- answ er s- on- op- am p- oper ati onal -am pl ifi er /

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……

1. r’e 2. r’e/2 3. 2r’e 4. R E

……

1. β 2. R E 3. R C 4. 2β

………

1. the noninverting input 2. the inverting input 3. both iputs 4. top of the tail resistor

………

1. smaller than differentail voltage gain 2. equal to differential voltage gain 3. greater than differential voltage gain 4. none of the above

………

1. differential amplifier 2. class B push-pull amplifier 3. CE amplifier 4. swamped amplifier

……

1. r’e 2. 2r’e 3. r’e/2 4. 2R E

……

1. a mechanical ground 2. an a.c. ground 3. a virtual ground 4. an ordinary ground http://el ectr oni cspost.com /m ul ti pl e- choi ce- ques ti ons- and- answ er s- on- op- am p- oper ati onal -am pl ifi er /

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About The Author Sasmita Hi! I am Sasmita . At ElectronicsPost.com I pursue my love for teaching. I am an M.Tech in Electronics & Telecommunication Engineering. And, if you really want to know more about me, please visit my "About" Page. Read More


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Multiple Choice Questions and Answers on Op-Amp ( Operational Amplifier ) – Electronics Post

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