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Electronics - Operational Amplifiers

Exercise : Operational Amplifiers - General Questions
46.
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?
1.4 mV rms
650 mV rms
4.55 V rms
0.455 V rms
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The magnitude of closed-loop voltage gain (Acl) of an inverting amplifier equals:
the ratio of the input resistance to the feedback resistance
the open-loop voltage gain Aol
the feedback resistance divided by the input resistance
the input resistance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
What is the difference between common-mode and differential-mode input signals?
phase relationship
voltage
current
apparent power
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
A circuit that uses an amplifier with passive filter elements is called a(n):
relaxation oscillator
signal generator
differential amplifier
active filter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The input offset current equals the
average of two base currents
collector current divided by the current gain
difference between two base-emitter voltages
difference between two base currents
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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