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WorksheetsOPAMP EXERCISE
Total questions: 13
Worksheet time: 7mins
The Op-amp can amplify
a.c. signals only
d.c. signals only
both a.c. and d.c. signals
neither d.c. nor a.c. signals
Inverting amplifier is
Source connected to V+
source connected to V-
source not connected anywhere
Noninverting amplifier is
source connected to V+
source connected to V-
source not connected
The gain equation of inverting amplifier is
R1/Rf
Rf/R1
-Rf/R1
-R1/Rf
Which is not the ideal characteristic of an op-amp?
Input Resistance –> 0
Output impedance –> 0
Bandwidth –> ∞
Open loop voltage gain –> ∞
Ideal Bandwidth of op amp
Zero
10MHz
close to infinity
Infinite
Why Op-amp must have infinite gain?
To amplify all frequencies
Amplify single frequency
Amplify certain range of frequencies
To rectify certain frequency
Identify the circuit
Inverting amplifier
voltage follower
Differential amplifier
Non inverting amplifier
Identify the circuit
Inverting amplifier
voltage follower
Differential amplifier
Non inverting amplifier
For an Op-amp with negative feedback, the output is …….
equal to the input
increased
fed back to the inverting input
fed back to the noninverting input
The use of negative feedback ………
reduces the voltage gain of an Op-amp
makes the Op-amp oscillate
makes linear operation possible
answers (1) and (2)
Negative feedback ………..
increases the input and output impedances
increases the input impedance and bandwidth
decreases the output impedance and bandwidth
does not affect impedance or bandwidth
In differential-mode, …………….
opposite polarity signals are applied to the inputs
the gain is one
the outputs are of different amplitudes
only one supply voltage is used
