WorksheetsAIC Lab - Viva
Total questions: 15
Worksheet time: 8mins
An ideal op-amp has
Infinite differential voltage gain
Infinite input resistance
Zero output resistance
All the above
What is the max output voltage that can be observed on the practical op-amp, if an op-amp is supplied with a voltage of ± 15 V?
Does not depend on the supply voltage
Less than 15 V
Grater than 15 V
None of the above
Determine the output voltage from the following circuit diagram?
None of the mentioned
What is the output voltage?
50v
5v
-5v
-50v
Which concept states that if one input terminal of an op-amp is at zero potential, then the other one also will be at zero potential?
Virtual short
Virtual ground
Zero input current
None of the above
Identify the Circuit Diagram
Differentiator
Integrator
Adder
Subtractor
If the input of this circuit Vin = 6V what is Vout?
+6 V
-6 V
+12 V
-12 V
0
If R1= 2 kOhm, R2=1 kOhm, then determine Vout/Vin
2
3
3/2
-2
If the gain of a closed-loop inverting amplifier is 3.9, with an input resistor value of 1600 ohms, what value of feedback resistor is necessary?
410 ohms
620 ohms
2400 ohms
6240 ohms
In 555 Timer,Reset Pin is at
1
8
4
3
The internal circuitry of the 555 timer consists of ________, an R-S flip-flop, a transistor switch, an output buffer amplifier, and a voltage divider.
one comparator
a voltage amplifier
two comparators
peak detector
In a 555 timer, a series connection of three resistors sets the reference voltage levels to the two comparators at _______ and __________.
2VCC/3, VCC/3
VCC/2, VCC/4
VCC, VCC/2
VCC, VCC
The ________ is defined as the time the output is active divided by the total period of the output signal.
On time
Off Time
Duty Cycle
Active ratio
The output of a particular Op-amp increases 8V in 12μs. The slew rate is
0.67 V/μs
1.5 V/μs
90 V/μs
96 V/μs
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
