Lica
Lica
Lica
a) Differential amplifier
b) Level translator
c) Output driver
d) Clamper
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6. What will be the emitter current in a differential amplifier, where both the transistor are biased
and matched? (Assume current to be IQ)
a) IE = IQ/2
b) IE = IQ
c) IE = (IQ)2/2
d) IE = (IQ)2
Week 1 Assignment
Due date for this assignment: 2018-08-15, 23:59 IST.
1 point
The input impedance of an op-amp is higher for
Inverting amplifier
Difference amplifier
Voltage follower
None of the mentioned
1 point
If a sine wave is given as input to the circuit shown, then the output will be
Triangular Wave
Square Wave
1 point
Let us consider an op-amp having a slew rate of 6V/ µS. Compute an undistorted peak-peak output voltage
for an input sine wave of 2 MHz frequency
1.5 V
0.95 V
3V
0.47 V
1 point
Consider an op-amp with input offset voltage of 1 mV. Given R1= 1 kΩ and R2= 3 MΩ, then calculate
the output voltage Vout
3V
0V
± 1 mV
- 0.5 V
1 point
Select the correct op-amp when working with high input source resistance
Op-amp with low bias current
Op-amp with higher slew rate
Buffer or voltage follower
All the mentioned
1 point
Consider R1 = 2 kΩ, R2 = 1 kΩ, R3 = 4 kΩ, Rf = 4 kΩ, V1 = 2 V, V2 = 3 V and V3 = 1 V respectively.
Compute the output voltage Vo for the circuit shown
- 17 V
17 V
20 V
- 20 V
1 point
Which is the necessary condition of gain while designing Wien bridge oscillator to ensure the
sustained oscillations?
A ≥ 29
A≥3
A≥1
None of the options
1 point
A tuned amplifier has peak output at 2 MHz and quality factor 50. The bandwidth and 3-dB
frequencies shall be at what values respectively?
40 kHz, 2.02 MHz, 1.98 MHz
40 kHz, 2.04 MHz, 1.96 MHz
Op-amp with any gain and a feedback phase shifting network is enough to act as a phase shift
oscillator
None of the mentioned
1 point
What will be the output of a difference op-amp when the voltages connected to the both input
terminals are same?
The output will be zero
The output voltage will be saturated
The output voltage will be nearly equal to zero but not zero
None of the mentioned
1 point
Which oscillator uses two inductors and 1 capacitor in the tank circuit
Hartley Oscillator
Colpitts Oscillator
1,4,2,3
1,2,3,4
2,1,4,3
4,3,2,1
1 point
Calculate the maximum output voltage of an op-amp shown below, if the op-amp has Vos = 5 mV
and IB = 200 nA
0 mV
55.55 mV
2 mV
55 mV
1 point
Calculate the maximum output voltage of an op-amp for the circuit shown in Question 14, if the op-
amp has Vos = 5 mV, IB = 200 nA and input offset current (IOS)= 55 nA
0 mV
55.55 mV
55 mV
0.55 mV
You may submit any number of times before the due date. The final submission will be considered for
grading.
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