Exercise: Operational Amplifiers

Questions for: Operational Amplifiers

The output signal of an op-amp is ________ out of phase with its input signal connected to the inverting input terminal.
A:
0º
B:
90º
C:
180º
D:
270º
Answer: C
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As the supply voltage increases, the voltage gain of the circuit ________ and the power consumption ________.
A:
increases, increases
B:
increases, decreases
C:
decreases, decreases
D:
decreases, increases
Answer: A
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An input applied to either input terminal will result in ________.
A:
outputs from both output terminals, which have opposite polarities
B:
outputs from both output terminals, which have the same polarities
C:
a single output from one of the output terminals
D:
None of the above
Answer: A
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An IC unit containing a differential amplifier built using opposite-type MOSFET transistors is referred to as a ________ circuit.
A:
CMOS
B:
BiFET
C:
BiMOS
D:
None of the above
Answer: A
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An ideal op-amp circuit has ________input impedance, ________ output impedance, and ________ voltage gain.
A:
zero, infinite, infinite
B:
infinite, zero, zero
C:
zero, zero, infinite
D:
infinite, zero, infinite
Answer: D
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