Instructions on how to enable your browser are contained in the help file.
The operational amplifier shown in the photo below is supplied in:
a) a flatpack
b) a DIL package
c) a SIL package
d) a leadless surface mounting package.
An ideal operational amplifier would have:
a) very low input impedance, very high output impedance and very low voltage gain
b) very high input impedance, very low output impedance and very low voltage gain
c) very high input impedance, very low output impedance and very high voltage gain
d) very high input impedance, very high output impedance and very high voltage gain
The connection marked X in the diagram shown below is:
a) the negative supply
b) the positive supply
c) the non-inverting input
d) the common 0V connection.
Which one of the following is a typical value of open-loop voltage gain for an operational amplifier?
The units of slew-rate are:
a) ohms per volt
b) volts per ohm
c) seconds per volt
d) volts per second.
An operational amplifier has a gain x bandwidth product of 2 MHz. If the device is used as an inverting amplifier a gain of 50, which one of the following gives the resulting bandwidth?
a) 10 kHz
b) 40 kHz
c) 100 kHz
d) 400 kHz.
In the circuit shown below, the mid-band voltage gain will be given by:
a) R1 + R2
b) R2 - R1
c) R2 / R1
d) R1 / R2.
The typical value of output resistance for an operational amplifier is in the range:
a) 1 ohm to 10 ohm
b) 10 ohm to 100 ohm
c) 100 ohm to 1 kohm
d) 1 kohm to 10 kohm.
Which one of the following gives the output voltage produced by the circuit shown below?
When negative feedback is applied to an operational amplifier:
a) the overall voltage gain is reduced and the bandwidth is reduced
b) the overall voltage gain is increased and the bandwidth is reduced
c) the overall voltage gain is reduced and the bandwidth is increased
d) the overall voltage gain is increased and the bandwidth is increased.
This is more feedback!
This is the feedback!
Back to Top