Test: Introduction to Oscillators

# Test: Introduction to Oscillators

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## 10 Questions MCQ Test GATE Electrical Engineering (EE) 2023 Mock Test Series | Test: Introduction to Oscillators

Test: Introduction to Oscillators for Electrical Engineering (EE) 2023 is part of GATE Electrical Engineering (EE) 2023 Mock Test Series preparation. The Test: Introduction to Oscillators questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Introduction to Oscillators MCQs are made for Electrical Engineering (EE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Introduction to Oscillators below.
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Test: Introduction to Oscillators - Question 1

### Oscillators are used to ______ AC voltage.

Detailed Solution for Test: Introduction to Oscillators - 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 Oscillators - Question 2

### Negative resistance are incorporated in oscillator for ___________

Detailed Solution for Test: Introduction to Oscillators - Question 2

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

Test: Introduction to Oscillators - Question 3

### Primary trigger for oscillation is obtained from ___________

Detailed Solution for Test: Introduction to Oscillators - Question 3

The primary trigger for oscillation is obtained from noise voltage.

Test: Introduction to Oscillators - Question 4

The output of a stable oscillator have ___________

Detailed Solution for Test: Introduction to Oscillators - Question 4

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 Oscillators - Question 5

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

Detailed Solution for Test: Introduction to Oscillators - Question 5

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

Test: Introduction to Oscillators - Question 6

Oscillator __________ an AC input for giving an AC output.

Detailed Solution for Test: Introduction to Oscillators - Question 6

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.

Test: Introduction to Oscillators - Question 7

For accomplishing negative resistance in oscillator we use _____________

Detailed Solution for Test: Introduction to Oscillators - Question 7

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 Oscillators - Question 8

The AC power of output signal is obtained by ___________

Detailed Solution for Test: Introduction to Oscillators - Question 8

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

Test: Introduction to Oscillators - Question 9

The output waveform of a stable oscillator have ___________

Detailed Solution for Test: Introduction to Oscillators - Question 9

Output of a stable oscillator have constant amplitude and frequency.

Test: Introduction to Oscillators - Question 10

The output of oscillator will not depend upon ___________

Detailed Solution for Test: Introduction to Oscillators - Question 10

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

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## GATE Electrical Engineering (EE) 2023 Mock Test Series

21 docs|271 tests