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Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Test  >  Analog Circuits  >  Test: Introduction to Oscillator - Electronics and Communication Engineering (ECE) MCQ

Introduction to Oscillator - Free MCQ Practice Test with solutions, GATE


MCQ Practice Test & Solutions: Test: Introduction to Oscillator (10 Questions)

You can prepare effectively for Electronics and Communication Engineering (ECE) Analog Circuits with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Introduction to Oscillator". These 10 questions have been designed by the experts with the latest curriculum of Electronics and Communication Engineering (ECE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Introduction to Oscillator - Question 1
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Oscillators are used to ______ AC voltage.

Detailed Solution: Question 1

  • Oscillators are used for generating AC voltage. They are often characterized by the frequency of the oscillations produced.
  • There are two main types of electronic oscillators, linear/harmonic and nonlinear/relaxation oscillator.

Test: Introduction to Oscillator - Question 2
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Oscillator ________ an AC input for giving an AC output.

Detailed Solution: Question 2

  • An oscillator is an amplifier with positive feedback. It usually has a noise which is an amplifier as an oscillating output.
  • They do not require any type of specific input to function properly.

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Test: Introduction to Oscillator - Question 3
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 Negative resistance are incorporated in oscillator for _______.

Detailed Solution: Question 3

Negative resistance are incorporated in oscillator for sustained oscillation. Negative resistance will cancel the damping by positive (normal) resistance.

Test: Introduction to Oscillator - Question 4
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For accomplishing negative resistance in oscillator we use ________.

Detailed Solution: Question 4

  • The input or output impedance of an amplifier with positive feedback applied, can be negative.
  • When loop gain is greater than 1, the input impedance is a negative value, over a linear range. These are also called active resistors.

Test: Introduction to Oscillator - Question 5
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Primary trigger for oscillation is obtained from _______.

Detailed Solution: Question 5

 The primary trigger for oscillation is obtained from noise voltage.

Test: Introduction to Oscillator - Question 6
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The AC power of output signal is obtained by _______.

Detailed Solution: Question 6

The Ac power of output signal is obtained by DC biasing voltage of amplifier.

Test: Introduction to Oscillator - Question 7
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The output of a stable oscillator has _______.

Detailed Solution: Question 7

  • Output of a stable oscillator have constant amplitude and frequency.
  • A common criteria is the Barkhausen stability criteria, wherein it states that loop gain should be unity and feedback should be positive.

Test: Introduction to Oscillator - Question 8
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The output waveform of a stable oscillator have:

Detailed Solution: Question 8

Output of a stable oscillator have constant amplitude and frequency.

Test: Introduction to Oscillator - Question 9
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 In an oscillator if phase of feedback is same as that of oscillation waveform then feedback is called ________.

Detailed Solution: Question 9

In an oscillator if phase of feedback is same as that of oscillation waveform then feedback is called positive feedback.

Test: Introduction to Oscillator - Question 10
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The output of oscillator will not depend upon ________.

Detailed Solution: Question 10

The output of oscillator will not depend upon input voltage. There is no input voltage for an oscillator.

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About this Electronics and Communication Engineering (ECE) Practice Test

This test contains 10 MCQs on Introduction to Oscillator with detailed solutions for each question. It is part of the Analog Circuits course on EduRev, designed to align with the current Electronics and Communication Engineering (ECE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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