• Home
  • Articles
  • Basics
  • Components
  • Projects
  • Communications
  • MCQ

WatElectronics.com

You are here: Home / MCQ / Colpitts Oscillator Question & Answers

Colpitts Oscillator Question & Answers

June 8, 2022 By WatElectronics

This article lists 50 Colpitts Oscillator MCQs for engineering students. All the Colpitts Oscillator Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Colpitts Oscillator.

A Colpitts oscillator is the reverse of the Hartley oscillator where all the inductors and capacitors are placed in one tank circuit. Resistors in the Colpitts oscillator provide bias in the circuit.

Capacitors are placed in a circuit to block some D.C and to allow only A.C current outside the supply source. The tank circuit is built with two capacitances that have been placed beyond one common inductor circuit.

Phase shift produced when capacitances are connected in series are 1800 and when connected in parallel produces phase shift 00 and 3600. The resonant frequency value of the Colpitts oscillator is given as 1/2LCT.

Advantages of Colpitts oscillator are high-frequency stability, very simple to design, less component requirement, the amplitude remains constant over the fixed frequency range, and it can bear both low and high temperatures.

Applications of Colpitts oscillator are used in radio frequency oscillators, radio receivers, commercial purposes, wireless communications, and also in sine wave generators.

1). Colpitts oscillator is the reverse of _____ oscillator.

Hint
Read more about Hartley Oscillator.
2). ____ is connected between the collector and base of the 1-stage transistor amplifier.

Hint
3). _____divider is placed at the center of the sub circuit in the Colpitts oscillator.

Hint
4).Whereas in Hartley oscillator _______ type exists.

Hint
5). Due to the capacitive divider present in the Colpitts oscillator, it acts as _____ source.

Hint
6). Two capacitances have been placed beyond one common _____ circuit?

Hint
7). What is the condition for Colpitts oscillator circuit?

Hint
8). Colpitts oscillator is ____ to design.

Hint
9). Colpitts capacitive circuit model has ____ frequency stability.

Hint
10). Hartley and Colpitts use the same ____ BJT?

Hint

Colpitts Oscillator Quiz Questions and Answers

11). Colpitts oscillator at the end provides a ____ output?

Hint
12). The circuit with two capacitors and one inductance is called a_____?

Hint
13). Colpitts oscillator Circuit has one ____ transistor?

Hint
Read more about NPN transistor.
14). RFC stands for _______?

Hint
15). Number of oscillations in Colpitts oscillator is calculated by ______?

Hint
16). Resonant frequency of tank circuit is_______?

Hint
17). The capacitance of the circuit CT, in which C1 and C2 are connected in series is ______?

Hint
18). Amount of feedback in the Colpitts oscillator depends on the _____ ratio.

Hint
19). Phase shift produced when capacitances are connected in series is ____?

Hint
20). Phase shift produced when capacitances are connected in parallel is ___?

Hint
21). By changing the ______ values, the feedback voltage values are also changed?

Hint
22). High quantity of feedback can obtain the sine wave which is _____?

Hint
23). The percentage of feedback capacitances is represented as_____?

Hint
24). The circuit does not ______ when a minimum quantity of feedback occurs?

Hint
25). Voltage over C1 is ____ than voltage over C2 in Colpitts oscillator?

Hint

Colpitts Oscillator Interview Questions and Answers

26). Resistance is measured in terms of __?

Hint
27). Inductance is measured in ____?

Hint
28). If the capacitance values are C1=24nF and C2=240nF, then the feedback ratio is _____?

Hint
29). FET or Op-amp must be operated at ____ frequencies?

Hint
Read more about Op-amp.
30). Colpitts oscillator employed as _______ oscillator and performs best when tuning is done?

Hint
31). Input impedance Z, formula is represented as ______?

Hint
32). gm is the _______ of the transistor.

Hint
33). IC is represented as _____ in a common base oscillator?

Hint
34).______ oscillator is also equivalent to Colpitts oscillator?

Hint
35). Difference of two voltages v1 and v2 are represented by _____?

Hint
36). Less number of _____ are required to build the circuit?

Hint
37). Colpitts oscillator can ____ with high and low temperatures?

Hint
38). Frequencies are varied based on _____ capacitors?

Hint
39). Frequency stability is _____ in Colpitts oscillator?

Hint
40). Amplitude output remains _____ over the fixed frequency range?

Hint

Colpitts Oscillator MCQs for Exams

41). Colpitts oscillator is used in ____ wave generator.

Hint
42). Colpitts oscillator is also used as _____ oscillator?

Hint
43). Colpitts oscillator is used as local oscillators in radio ____?

Hint
44). Application of Colpitts oscillator is ______?

Hint
45). Colpitts oscillator is used as a _______ sensor with added circuits.

Hint
Read more about Temperature Sensor.
46). Sequence of undamped oscillations are formed by ______ criterion?

Hint
47). Admittance is determined by its ______ parameters?

Hint
48). Feedback circuits are determined by the _____ parameters?

Hint
49). If the loop gain of the amplifier is greater than one, then the oscillations are ____ in the circuit?

Hint
50). Colpitts oscillator is designed to remove drawbacks of ____ oscillator?

Hint

For More MCQs

  • Oscillators Questions & Answers
  • Wien Bridge Oscillator Questions & Answers
clock.png

Time is Up!

clock.png

Time's up

Recent Posts

  • IRF840 MOSFET : Pin Configuration, Specifications, Circuit & Its Applications
  • 2N5457 N-channel JFET : Pin Configuration, Specifications, Circuit & Its Applications
  • FDV301N MOSFET: Pin Configuration, Specifications, Circuit & Its Applications
  • MCP3008 ADC : Pin Configuration, Specifications, Interfacing & Its Applications
  • MSP430 Launchpad : Pin Configuration, Features, Interfacing & Its Applications
  • HC-06 Bluetooth Module : Pin Configuration, Set up, Interfacing & Its Applications
  • DS3231 RTC Module : Pin Configuration, Specifications, Interfacing with Microcontroller & Its Applications
  • IRF3205 MOSFET : Pin Configuration, Specifications, Circuit & Its Applications
  • Allen Bradley PLC : Architecture, Working, Types & Its Applications
  • Pentium Processor : Architecture, Working, Vs Pentium Pro, & Its Applications
  • Preamplifier : Circuit, Working, Types, Differences & Its Applications
  • Occupancy Sensor : Working, Circuit, Types & Its Applications

Categories

  • Articles (20)
  • Basics (112)
  • Communications (53)
  • Components (58)
  • Digital Electronics (41)
  • Digital Signalling (3)
  • Electronics (197)
  • Embedded Systems (11)
  • Magnetism (5)
  • Microprocessors (3)
  • Modulation (1)
  • Projects (15)

Subscribe to Our Newsletter

Don’t miss these articles!

We don’t spam! Read our privacy policy for more info.

Check your inbox or spam folder to confirm your subscription.

Category

  • Electronics
  • Components
  • Digital Electronics
  • Embedded Systems
  • Projects

Copyright © 2021 · WatElectronics.com | Contact Us | Privacy Policy