CuriousTab
Search
CuriousTab
Home
Aptitude
Computer
C Programming
C# Programming
C++ Programming
Database
Java Programming
Networking
Engineering
Biochemical Engineering
Biochemistry
Biotechnology
Chemical Engineering
Civil Engineering
Computer Science
Digital Electronics
Electrical Engineering
Electronics
Electronics and Communication Engineering
Mechanical Engineering
Microbiology
Technical Drawing
GK
Current Affairs
General Knowledge
Reasoning
Data Interpretation
Logical Reasoning
Non Verbal Reasoning
Verbal Ability
Verbal Reasoning
Exams
AIEEE
Bank Exams
CAT
GATE
IIT JEE
TOEFL
Jobs
Analyst
Bank PO
Database Administrator
IT Trainer
Network Engineer
Project Manager
Software Architect
Operational Amplifiers problems
1. An output that is proportional to the addition of two or more inputs is from which type of amplifier?
Options
A. differentiator
B. difference
C. summing
D. analog subtractor
Show Answer
Scratch Pad
Discuss
Correct Answer: summing
2. The magnitude of closed-loop voltage gain (
A
cl
) of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain
A
ol
C. the feedback resistance divided by the input resistance
D. the input resistance
Show Answer
Scratch Pad
Discuss
Correct Answer: the feedback resistance divided by the input resistance
3. What is the output waveform?
Options
A. sine wave
B. square wave
C. +15 V
D. ?15 V
Show Answer
Scratch Pad
Discuss
Correct Answer: sine wave
4. What starts a free-running multivibrator?
Options
A. a trigger
B. an input signal
C. an external circuit
D. nothing
Show Answer
Scratch Pad
Discuss
Correct Answer: nothing
5. The closed-loop voltage gain of an inverting amplifier equals:
Options
A. the ratio of the input resistance to the feedback resistance
B. the open-loop voltage gain
C. the feedback resistance divided by the input resistance
D. the input resistance
Show Answer
Scratch Pad
Discuss
Correct Answer: the feedback resistance divided by the input resistance
6. With a differential gain of 50,000 and a common-mode gain of 2, what is the common-mode rejection ratio?
Options
A. ?87.9 dB
B. ?43.9 dB
C. 43.9 dB
D. 87.9 dB
Show Answer
Scratch Pad
Discuss
Correct Answer: 87.9 dB
7. What is the cutoff frequency of this low-pass filter?
Options
A. 4.8 kHz
B. 3.8 kHz
C. 2.8 kHz
D. 1.8 kHz
Show Answer
Scratch Pad
Discuss
Correct Answer: 1.8 kHz
8. How many leads does the TO-5 metal can package of an operational amplifier have?
Options
A. 8, 10, or 12
B. 6, 8, or 10
C. 8 or 14
D. 8 or 16
Show Answer
Scratch Pad
Discuss
Correct Answer: 8, 10, or 12
9. A circuit that uses an amplifier with passive filter elements is called a(n):
Options
A. relaxation oscillator
B. signal generator
C. differential amplifier
D. active filter
Show Answer
Scratch Pad
Discuss
Correct Answer: active filter
10. What is the output waveform?
Options
A. sine wave
B. square wave
C. sawtooth wave
D. triangle wave
Show Answer
Scratch Pad
Discuss
Correct Answer: triangle wave
First
2
3
4
...
6
..
9
10
Last
More in Electronics:
Alternating Current and Voltage
Alternating Current vs Direct Current
Analog and Digital Converters
Analog to Digital
Arithmetic Operations and Circuits
Basic Op-Amp Circuits
Bipolar Junction Transistors (BJT)
Capacitors
Combinational Logic Circuits
Computer Hardware and Software
Diodes and Applications
Field Effect Transistors (FET)
Flip-Flops and Timers
Inductors
Logic Circuit Simplification
Logic Gates
Magnetism and Electromagnetism
Measurement, Conversion and Control
Number Systems and Codes
Ohm's Law
Operational Amplifiers
Parallel Circuits
Programmable Logic Devices (PLD)
Quantities and Units
RC Circuits
Resistance and Power
RL Circuits
RLC Circuits and Resonance
Semiconductor Memory
Semiconductor Principles
Sequential Logic Circuits
Series-Parallel Circuits
Series Circuits
Special-Purpose Op-Amp Circuits
Standard Logic Devices (SLD)
Testing and Troubleshooting
Thyristors and Tranducers
Time Response of Reactive Circuits
Transformers
Transistors and Applications
Voltage and Current
