Operational Amplifiers - General Questions (5)

Directions to Solve

Operational Amplifiers - General Questions

33.

Input impedance [Z_in(I)] of an inverting amplifier is approximately equal to:

A.	Ri
B.	Rf + Ri
C.	âˆž
D.	Rf â€“ Ri

Answer: Option A

Explanation:

No answer description available for this question

34.

If a noninverting amplifier has an R_IN of 1000 ohms and an R_FB of 2.5 kilohms, what is the R_IN voltage when 1.42 mV is applied to the correct input?

A.	3.5 mV
B.	ground
C.	1.42 mV
D.	0.56 mV

Answer: Option C

Explanation:

No answer description available for this question

35.

How many leads does the TO-5 metal can package of an operational amplifier have?

A.	8, 10, or 12
B.	6, 8, or 10
C.	8 or 14
D.	8 or 16

Answer: Option A

Explanation:

No answer description available for this question

36.

A portion of the output that provides circuit stabilization is considered to be:

A.	negative feedback
B.	distortion
C.	open-loop
D.	positive feedback

Answer: Option A

Explanation:

No answer description available for this question.

37.

What starts a free-running multivibrator?

A.	a trigger
B.	an input signal
C.	an external circuit
D.	nothing

Answer: Option D

Explanation:

No answer description available for this question

38.

With negative feedback, the returning signal:

A.	aids the input signal
B.	is proportional to output current
C.	opposes the input signal
D.	is proportional to differential voltage gain

Answer: Option C

Explanation:

No answer description available for this question

39.

An astable multivibrator is also known as a:

A.	one-shot multivibrator
B.	free-running multivibrator
C.	bistable multivibrator
D.	monostable multivibrator

Answer: Option B

Explanation:

No answer description available for this question.

40.

If ground is applied to the (+) terminal of an inverting op-amp, the (–) terminal will:

A.	not need an input resistor
B.	be virtual ground
C.	have high reverse current
D.	not invert the signal

Answer: Option B

Explanation:

No answer description available for this question

Operational Amplifiers - General Questions (5)

Operational Amplifiers - General Questions

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