An output that is proportional to the addition of two or more inputs is from whi

CuriousTab

CuriousTab

Home Aptitude

Discussion

Home ‣ Electronics ‣ Operational Amplifiers Comments

Question
An output that is proportional to the addition of two or more inputs is from which type of amplifier?
Options
A. differentiator
B. difference
C. summing
D. analog subtractor

Correct Answer

summing

Operational Amplifiers problems

Search Results

1. When a capacitor is used in place of a resistor in an op-amp network, its placement determines:
Options
A. open- or closed-loop gain
B. integration or differentiation
C. saturation or cutoff
D. addition or subtraction

2. If the gain of a closed-loop inverting amplifier is 3.9, with an input resistor value of 1.6 kilohms, what value of feedback resistor is necessary?
Options
A. 6240 ohms
B. 2.4 kilohms
C. 410 ohms
D. 0.62 kilohms

5. With negative feedback, the returning signal
Options
A. is proportional to the output current
B. is proportional to the differential voltage gain
C. opposes the input signal
D. aids the input signal

6. The magnitude of closed-loop voltage gain (A_cl) of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain A_ol
C. the feedback resistance divided by the input resistance
D. the input resistance

9. The closed-loop voltage gain of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain
C. the feedback resistance divided by the input resistance
D. the input resistance

Comments

More in Electronics: