WorksheetsBasics of Opamp
Total questions: 26
Worksheet time: 15mins
What is the symbol for an operational amplifier?
Circle with + and - signs
Star with + and - signs
Triangle with + and - signs
Square with + and - signs
180phase shift with respect to input waveform is
Inverting amplifier
Non-inverting amplifier
pushpull amplifier
output waveform is inphase with input waveform
inverting amplifier
noninverting amplifier
halfwave rectifier
Popular op-amp IC is
741
714
471
417
DIP
Dual package inline
Dual inline package
Differential inline package
Difference integrator package
Closed loop op-amp
output resistance connected to V+
output resistance connected to V-
Output resistance connected to V+
Closed loop amplifier
Schemit trigger
open loop opamp
compartor
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
The power absorbed by the 4 kohm resistor is:
9 mV
4 mV
2 mV
1 mV
Which of these amplifiers is used in a digital-to-analog converter?
noninverter
voltage follower
summer
difference amplifier
Difference amplifiers are used in (please check all that apply):
instrumentation amplifiers
voltage followers
voltage regulators
summing amplifiers
When a differential amplifier is operated single-ended,..
the output is grounded
one input is grounded and signal is applied to the other
both inputs are connected together
the output is not inverted
The input stage of an Op-amp is usually a ……….
differential amplifier
class B push-pull amplifier
CE amplifier
swamped amplifier
The common-mode voltage gain is ………
smaller than differential voltage gain
equal to differential voltage gain
greater than differential voltage gain
all of the above
The differential gain is ………
very high
very low
dependent on input voltage
about 100
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
A voltage follower ……….
has a voltage gain of 1
is noninverting
has no feedback resistor
has all of these
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
