An amplifier basically constructed from two transistors and whose output is proportional to the difference between the voltages applied to its two inputs
Adifferential amplifier
Bcascode amplifier
Ccomplementary amplifier
Dquasi-complementary amplifier
#22
On of the most versatile and widely used electronic device in linear applications
ASCR
BFET
CUJT
Dop-amp
#23
It is a very high-gain differential amplifier with very high input impedance and very low output impedance
Apar-amp
Bop-amp
Cdifferential amp
Dcomplementary amp
#24
What are the possible applications of opamps
Aac and dc amplifiers
Boscillators and signal conditioning
Cvoltage-level detectors and comparators
Dall of them
#25
An operational amplifier must have at least how many usable terminals?
A3 terminals
B5 terminals
C8 terminals
D14 terminals
#26
The circuit at the input stage of operational amplifiers
Adifferential amplifier
Bcascaded amplifier
Ccurrent mirror
Dcomplementary amplifier
#27
An amplifier whose output is proportional to the difference between the voltages applied to its two inputs
Adifferential amplifier
Bdifferencing
Cdelta amp
Dcascode-amp
#28
In opamps functional block diagram, what follows the differential amplifier?
Acascode-amplifier
Bcomplementary amplifier
Clevel shifter
Dhigh gain amplifier
#29
A good opamp has a
Avery high input resistance
Bvery low input resistance
Cvery high output resistance
Dvery low CMRR
#30
Ideally, opamps have infinite input resistance and ________ output resistance.
Ainfinite
Bzero
Cvariable
Da highly stabilized
#31
How does the input of an op-amp made high?
Aby using super beta transistor at the input differential stage
Bbu using FETs at the input differential stage
Cby connecting a very high resistance in series with the input differential stage
DA and B above
#32
What type of amplifier commonly used at the output stage of op-amps?
Adifferential amplifier
Bcascade amplifier
Ccomplementary amplifier
Ddarlington stage amplifier
#33
The transistor configuration used at the output complementary stage of most opamps
Acascode configuration
Bcommon emitter
Ccommon collector
Dcommon base
#34
The stage followed by the output complementary in opamps functional block diagram
Alevel shifter
Bphase shifter
Ccurrent mirror
Dpolarizer
#35
What is the purpose of a level shifter in op-amps?
Ato set and/or adjust the output voltage to zero when the input signal is zero
Bto set and/or adjust the input offset voltage to zero
Cto shift the input offset current to zero
Dall of them
#36
Primarily, op-amps are operated with bipolar power supply, however, we can also use single polarity power supply by
Agenerating reference voltage above ground
B"floating" the negative supply (V-) of the opamp
Csimply connecting the negative supply terminal (V-) of the opamp to ground
Disolating the negative supply terminal (V-) by a capacitor
#37
Opamps have two input terminals, inverting(-) and non-inverting(+) inputs. What is the significance of its name?
AIf a sinewave is applied to the (-), the output will be inverted, while if applied to the (+), there will be no phase shift
BIf pulses are applied to the (-) input, the positive pulse becomes negative, while if applied at (+) there will be no reversal of the pulse aat the output
CIn dc amplifier applications, increasing input at the (-) terminal causes the output to decrease and vice versa, while at the (+), the output magnitude goes with the input
Dall of these are correct
#38
When the same signal is applied to both inverting and non-inverting input terminals of an ideal opamp, the output voltage would be
Azero (0) V
B+VSAT
C-VSAT
Doffset voltage
#39
The operating mode of an opamp, when both inputs are tied together or when the input signal is common to both inputs
Adifferential mode
Brejection mode
Cdouble-ended mode
Dcommon mode
#40
What do you call of the gain of an opamp if operated in common mode input?
