WorksheetsCHAPTER 3 OPERATIONAL AMPLIFIER
Total questions: 17
Worksheet time: 9mins
A differential amplifier.....
is a part of an op amp
has one input and one output
has two outputs
answer (1) and (2)
With zero volts on both inputs, an OP-amp ideally should have an output ………..
equal to the positive supply voltage
equal to the negative supply voltage
equal to zero
equal to CMRR
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 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
An ideal operational amplifier has...
infinite output impedance
zero input impedance
infinite bandwidth
all of the above
Open loop gain of an amplifier can be represented by the formula
Vo/Vi
Vo + Vi
Vo - Vi
Vo × Vi
In op-amp, the signal applied at inverting terminal appears at the output terminal with a phase
0
90
180
45
Input resistance of op-amp is
very high
very low
zero
one
The two input terminals of an op amp are labeled as:
high and low
positive and negative
inverting and noninverting
differential and nondifferential
For an ideal op amp, which of the following statements is not true?
The differential voltage across the input terminals is zero
The current into the input terminals is zero
The current from the output terminal is zero
The output resistance is zero
For the circuit, voltage vo is
-6 V
-5 V
-1.2 V
-0.2 V
Which of these amplifiers is used in a digital-to-analog converter?
noninverter
voltage follower
summer
difference amplifier
Negative Feedback is frequently used in ...............................circuits
Amplifier
Permanent
microprocessor
All the Above
What is the feedback component of an integrator?
resistor
capacitor
inductor
diode
What do you call the ratio of the unity-gain frequency to the cutoff frequency?
Open loop gain
CMRR
Common Mode Gain
Closed Loop Gain
Ideal voltage gain of an operational amplifier is
Zero
Unity
Infinity
None of the above
What is the feedback component of an integrator?
resistor
capacitor
inductor
diode
