Operational Amplifiers - General Questions

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Operational Amplifiers - General Questions

The input offset current equals the

A.	average of two base currents
B.	collector current divided by the current gain
C.	difference between two base-emitter voltages
D.	difference between two base currents

Answer: Option D

Explanation:

No answer description available for this question.

A circuit that uses an amplifier with passive filter elements is called a(n):

A.	relaxation oscillator
B.	signal generator
C.	differential amplifier
D.	active filter

Answer: Option D

Explanation:

No answer description available for this question

What is the difference between common-mode and differential-mode input signals?

A.	phase relationship
B.	voltage
C.	current
D.	apparent power

Answer: Option A

Explanation:

No answer description available for this question

The magnitude of closed-loop voltage gain (A_cl) of an inverting amplifier equals:

A.	the ratio of the input resistance to the feedback resistance
B.	the open-loop voltage gain Aol
C.	the feedback resistance divided by the input resistance
D.	the input resistance

Answer: Option C

Explanation:

No answer description available for this question.

A differential amplifier has a common-mode gain of 0.2 and a common-mode rejection ratio of 3250. What would the output voltage be if the single-ended input voltage was 7 mV rms?

A.	1.4 mV rms
B.	650 mV rms
C.	4.55 V rms
D.	0.455 V rms

Answer: Option C

Explanation:

No answer description available for this question

An ideal amplifier should have:

A.	high input current
B.	zero offset
C.	high output impedance
D.	moderate gain

Answer: Option B

Explanation:

No answer description available for this question

In a PLL, to obtain lock, the signal frequency must:

A.	come within the lock range
B.	be less than the capture frequency
C.	come within the capture range
D.	be greater than the capture frequency

Answer: Option C

Explanation:

No answer description available for this question

An output that is proportional to the addition of two or more inputs is from which type of amplifier?

A.	differentiator
B.	difference
C.	summing
D.	analog subtractor

Answer: Option C

Explanation:

No answer description available for this question

Operational Amplifiers - General Questions

Operational Amplifiers - General Questions

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