Computer Programming MCQs

5739 MCQs  (Page 282 of 574)

Attempt Computer Programming MCQs Quiz
If the feedback resistor in Q15 (above question) is open, the voltage gain ____________?
A. Increases
B. Decreases
C. Is not affected
D. Depends on ri
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A certain OP-amp has bias currents of 50 µA. The input offset current is_________________?
A. 700 na
B. 99.3 μa
C. 49.7 μa
D. None of these
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The use of negative feedback ________________?
A. Reduces the voltage gain of an op-amp
B. Makes the op-amp oscillate
C. Makes linear operation possible
D. Answers (a) and (b)
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A certain inverting amplifier has a closed-loop voltage gain of 25. The Op-amp has an open-loop voltage gain of 100,000. If an Op-amp with an open-loop voltage gain of 200,000 is substituted in the arrangement, the closed-loop gain________________?
A. Doubles
B. Drops to 12.5
C. Remains at 25
D. Increases slightly
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The tail current of a differential amplifier is_______________?
A. Half of either collector current
B. Equal to either collector current
C. Two times either collector current
D. Equal to the difference in base currents
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A differential amplifier______________?
A. Is a part of an op-amp
B. Has one input and one output
C. Has two outputs
D. Answers (a) and (b)
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In the common mode, _______________?
A. Both inputs are grounded
B. The outputs are connected together
C. An identical signal appears on both the inputs
D. The output signal are in-phase
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With zero volts on both inputs, an OP-amp ideally should have an output _______________?
A. Equal to the positive supply voltage
B. Equal to the negative supply voltage
C. Equal to zero
D. Equal to cmrr
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When a differential amplifier is operated single-ended, _______________?
A. The output is grounded
B. One input is grounded and signal is applied to the other
C. Both inputs are connected together
D. The output is not inverted
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The differential gain is _____________?
A. Very high
B. Very low
C. Dependent on input voltage
D. About 100
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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