Oscillator MCQs | Oscillator Multiple Choice Questions and Answers

Sports GK Questions and Answers 2024 (Latest Updated)

Awards & Honours GK Questions 2024 (Latest Updated)

Questions
1 An oscillator converts ……………..
A c. power into d.c. power
B c. power into a.c. power
C mechanical power into a.c. power
D none of the above

Answer: c. power into a.c. power
2 In an LC oscillator, the frequency of oscillator is ……………. L or C.
A Proportional to square of
B Directly proportional to
C Independent of the values of
D Inversely proportional to square root of

Answer: Inversely proportional to square root of
Advertisement
Article and Schedule Quiz Start Test!
DOWNLOAD CURRENT AFFAIRS PDF FROM APP
3 An LC oscillator cannot be used to produce ……………….. frequencies
A High
B Audio
C Very low
D Very high

Answer: Very low
4 In a phase shift oscillator, the frequency determining elements are …………
A L and C
B R, L and C
C R and C
D None of the above

Answer: R and C
5 The piezoelectric effect in a crystal is ……………
A A voltage developed because of mechanical stress
B A change in resistance because of temperature
C A change in frequency because of temperature
D None of the above

Answer: A voltage developed because of mechanical stress
6 The application where one would most likely find a crystal oscillator is ……………..
A Radio receiver
B Radio transmitter
C AF sweep generator
D None of the above

Answer: Radio transmitter
7 For an oscillator to properly start, the gain around the feedback loop must initially be
A 1
B Greater than 1
C Less than 1
D Equal to attenuation of feedback circuit

Answer: Greater than 1
8 The Q of the crystal is of the order of …………
A 100
B 1000
C 50
D More than 10,000

Answer: More than 10,000
9 In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is …………
A Increased 2 times
B Decreased 4 times
C Increased 4 times
D Decreased 2 times

Answer: Decreased 2 times
10 Which of the following is not an example for non-sinusoidal oscillator?
A Sawtooth Generators
B Blocking oscillators
C Multivibrator
D Crystal oscillators

Answer: Crystal oscillators
11 The sinusoidal oscillator is also called ___________
A LC oscillator
B Harmonic oscillator
C RC oscillator
D Crystal oscillators

Answer: Harmonic oscillator
12 Low frequency oscillators have a frequency range of ___________
A 20 Hz-20K Hz
B 20 Hz -100k Hz
C 1 Hz -20k Hz
D 50 Hz -100k Hz

Answer: 20 Hz -100k Hz
13 High frequency oscillators have a frequency range of ___________
A 300K Hz-2G Hz
B 100k Hz-500k Hz
C 8k Hz-800K Hz
D 4K Hz-1G Hz

Answer: 300K Hz-2G Hz
14 Relaxation oscillators are also known as ___________
A Multivibrator
B Phase shift oscillators
C Blocking oscillators
D Saw tooth generator

Answer: Multivibrator
15 Which of the following oscillator cannot be used in low frequency oscillations?
A Wein bridge oscillators
B RC phase shift oscillators
C Colpitts oscillators
D RC oscillators

Answer: Colpitts oscillators
16 Which of the following oscillator is not using a feedback network for its oscillation?
A LC oscillator
B RC oscillator
C Crystal oscillator
D Relaxation oscillators

Answer: Relaxation oscillators
17 The signal generator generally used in the laboratories is ………….. oscillator
A Wien-bridge
B Hartely
C Crystal
D Phase shift

Answer: Wien-bridge
18 Quartz crystal is most commonly used in crystal oscillators because ………….
A It has superior electrical properties
B It is easily available
C It is quite inexpensive
D None of the above

Answer: It has superior electrical properties
19 In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency……….
A Remains the same
B Decreases
C Increases
D Insufficient data

Answer: Increases
20 One condition for oscillation is ………….
A A phase shift around the feedback loop of 180o
B A gain around the feedback loop of one-third
C A phase shift around the feedback loop of 0o
D A gain around the feedback loop of less than 1

Answer: A phase shift around the feedback loop of 0o

Random GK Questions

Q. Which one of the following statements is correct?
Q. The most important source of revenue for the states in India is
Q. What is Recession ?
Q. The important tree of coniferous softwood is
Q. With which form of economy is the term ‘Laissez-faire’ associated?
Q. Popular sovereignty was advocated by
Assam Direct Recruitment Test Series

Teacher Eligibility Test

Assam Direct Recruitment Test Series