On this page, we will review the Analog Electronics Short Notes PDF Part 16. Welcome to Poly Notes Hub, a leading destination for analog electronics notes for engineering students.
Author Name: Arun Paul
Analog Electronics Short Notes Pdf Part 16
Here we have listed some analog electronics short notes for all types of exams like diploma engineering, degree engineering, and GATE exam and many more. In every page, we have listed 10 short analog electronics questions and answers and anyone can download it by a single click for future use.
1. What is the operation of Tuned Collector Oscillator?
In a tuned collector oscillator, the collector of the transistor is connected to an LC tank circuit that determines the oscillation frequency. It uses positive feedback to maintain continuous oscillations.
2. What is the operation of Hartley Oscillator?
The Hartley oscillator uses a tapped inductor or two inductors and one capacitor to form the tank circuit. It provides positive feedback through the coil tap to sustain oscillations.
3. What is the operation of Colpitt’s Oscillator?
Colpitt’s oscillator uses two capacitors and one inductor in the tank circuit. The capacitive voltage divider provides the feedback necessary to generate continuous sinusoidal oscillations at a specific frequency.
4. What are the drawbacks of LC Oscillator?
LC oscillators are sensitive to component variations, suffer from frequency instability over time and temperature, and are not suitable for generating low-frequency signals due to bulky inductors.
5. Why is Crystal Oscillator used in Radio Transmitter?
Crystal oscillators are used in radio transmitters because they provide highly stable and accurate frequencies, which are essential for consistent and interference-free communication.
6. Why is amplifier circuit necessary in an oscillator?
An amplifier circuit is necessary in an oscillator to compensate for energy losses in the feedback network and maintain constant amplitude of the generated waveform.
7. Why do we use three RC sections in RC Oscillator?
Three RC sections are used in an RC oscillator to provide the required 180° phase shift for feedback, ensuring sustained and stable oscillations when combined with transistor’s 180° phase shift.
8. Why is negative feedback provided in Wien Bridge Oscillators?
Negative feedback in Wien Bridge Oscillators is used to stabilize the gain and amplitude of the oscillations, preventing distortion and ensuring consistent waveform generation.
9. Why is quartz crystal commonly used in Crystal Oscillators?
Quartz crystal is used due to its high mechanical stability, excellent frequency accuracy, low temperature drift, and ability to oscillate at precise frequencies for long periods.
10. Which oscillator is used to generate signals in laboratories?
The Wien Bridge Oscillator is commonly used in laboratories to generate low-frequency, stable, and distortion-free sinusoidal signals due to its excellent frequency stability and ease of tuning.