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MCQs

Total Questions : 163 | Page 15 of 17 pages
Question 141. . A noninverting closed-loop op-amp circuit generally has a gain factor:
  1.    less than one
  2.    greater than one
  3.    of zero
  4.    equal to one
 Discuss Question
Answer: Option B. -> greater than one
Question 142. . In order for an output to swing above and below a zero reference, the op-amp circuit requires:
  1.    a resistive feedback network
  2.    zero offset
  3.    a wide bandwidth
  4.    a negative and positive supply
 Discuss Question
Answer: Option D. -> a negative and positive supply
Question 143. . Op-amps used as high- and low-pass filter circuits employ which configuration?
  1.    noninverting
  2.    comparator
  3.    open-loop
  4.    inverting
 Discuss Question
Answer: Option D. -> inverting
Question 144. . If ground is applied to the (+) terminal of an inverting op-amp, the (–) terminal will:
  1.    not need an input resistor
  2.    not need an input resistor
  3.    have high reverse current
  4.    not invert the signal
 Discuss Question
Answer: Option B. -> not need an input resistor
Question 145. .  An astable multivibrator is also known as a:
  1.    one-shot multivibrator
  2.    free-running multivibrator
  3.    bistable multivibrator
  4.    monostable multivibrator
 Discuss Question
Answer: Option B. -> free-running multivibrator
Question 146. . With negative feedback, the returning signal:
  1.    aids the input signal
  2.    is proportional to output current
  3.    opposes the input signal
  4.    is proportional to differential voltage gain
 Discuss Question
Answer: Option C. -> opposes the input signal
Question 147. . A portion of the output that provides circuit stabilization is considered to be:
  1.    negative feedback
  2.    distortion
  3.    open-loop
  4.    positive feedback
 Discuss Question
Answer: Option A. -> negative feedback
Question 148. . What starts a free-running multivibrator?
  1.    a trigger
  2.    an input signal
  3.    an external circuit
  4.    nothing
 Discuss Question
Answer: Option D. -> nothing
Question 149. . How many leads does the TO-5 metal can package of an operational amplifier have?
  1.    8, 10, or 12
  2.    6, 8, or 10
  3.    8 or 14
  4.    8 or 16
 Discuss Question
Answer: Option A. -> 8, 10, or 12
Question 150. . The closed-loop voltage gain of an inverting amplifier equals:
  1.    the ratio of the input resistance to the feedback resistance
  2.    the open-loop voltage gain
  3.    the feedback resistance divided by the input resistance
  4.    the input resistance
 Discuss Question
Answer: Option C. -> the feedback resistance divided by the input resistance

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