WorksheetsIV Semester-6
Total questions: 20
Worksheet time: 7mins
Common-mode gain signifies:
Increase the noise
Ability to reject common mode signals like noise, interference
Increase the distortion
All of the above
Slew rate is defined as the:
Minimum rate of change of output voltage with time
Moderate rate of change of output voltage with time
Maximum rate of change of output voltage with time
None of the above
Op-amp integrator uses:
Capacitor as feedback element
Resistor as feedback element
Inductor as feedback element
A simple wire as feedback element
The ramp voltage at the output of an op-amp integrator
increases or decreases exponentially
is constant
is always increasing and never decreasing at linear rate
increases or decreases at a linear rate
In an amplifier with negative feedback, the bandwidth is
increased by a factor of β
decreased by a factor of β
increased by a factor of (1+Aβ)
not affected at all by the feedback
When a step-input is given to an op-amp integrator, the output will be
a ramp
a triangular wave with dc bias
a square wave
both 1 and 2
If the value of resistor Rf in an averaging amplifier circuit is equal to the value of one input resistor divided by the number of inputs, the output will be equal to
the average of the individual inputs
the inverted average of the individual inputs
the inverted sum of the individual inputs
the sum of the individual inputs
The output signal of an op-amp is (a) out of phase in degree with its input signal connected to the inverting input terminal.
In the circuit shown, the output voltage, Vo, is
+3V
-3V
+7V
-7V
In the inverting amplifier , The resistance ROM is chosen as R1 || RF in order to
Increase gain
Reduce offset current
Reduce offset voltage
Increase CMRR
In the inverting amplifier shown it is desired to realize the input resistance seen by the small signal source to be as large as possible while keeping the voltage gain between -10 and -25. The upper limit of RF is 1 MΩ. The value of R1 should be,
Infinity
1 MΩ
100 KΩ
40 KΩ
Refer to the following Figure . What is the output voltage in volts?
(a)
Refer to the following Figure . What is the output voltage in volts?
(a)
Which circuit is known as a current-to-voltage converter?
a
b
c
d
Find the range of frequency between which the circuit act as integrator?
[1/(2πRFCF)]– (2πR1CF)
(2πRFCF) – [1/(2πR1CF)].
[1/(2πRFCF)]- [1/(2πR1CF)]
None of the above
Why a resistor is shunted across the feedback capacitor in the practical integrator?
To reduce operating frequency
To enhance low frequency gain
To enhance error voltage
To reduce error voltage
A sine wave of 1vpeak at 1000Hz is applied to a differentiator with the following specification: RF =1kΩ and C1=0.33µF, find the correct output waveform?
a
b
c
d
The stability and high frequency noise problem in differentiator are corrected by
Adding feedback capacitor
Feedback capacitor and internal resistor
Feedback capacitor and feedback resistor
Internal capacitor and internal capacitor
Calculate the gain limiting frequency for the circuit
15.64Hz
23.356Hz
33.89Hz
None
At what condition the input signal of the integrator is integrated properly
T = RFCF
T ≤ RFCF
T ≥ RFCF
None of the above
