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Test: Crystal Oscillator - Electronics and Communication Engineering (ECE) MCQ


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20 Questions MCQ Test - Test: Crystal Oscillator

Test: Crystal Oscillator for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Test: Crystal Oscillator questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Crystal Oscillator MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Crystal Oscillator below.
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Test: Crystal Oscillator - Question 1

 Which of the following is not a characteristics of crystal oscillator?

Detailed Solution for Test: Crystal Oscillator - Question 1

The crystal oscillator is highly stable with time, highly stable with temperature, highly selective. The frequency of crystal is a constant regardless of output circuits.

Test: Crystal Oscillator - Question 2

 Equivalence circuit of crystal contains

Detailed Solution for Test: Crystal Oscillator - Question 2

 There is One inductor two capacitor and one resistor in equivalent circuit of crystal oscillator. Values of these components determines the resonance frequency of oscillation.

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Test: Crystal Oscillator - Question 3

The parallel capacitance in the equivalent circuit of crystal oscillator represents __________

Detailed Solution for Test: Crystal Oscillator - Question 3

The parallel capacitor of the equivalent circuit of crystal oscillator constitute for electrostatic capacitance between two parallel plates of crystal. That is, it is inter electrode capacitance.

Test: Crystal Oscillator - Question 4

The inductance in the equivalent circuit of crystal oscillator represents __________

Detailed Solution for Test: Crystal Oscillator - Question 4

Inductance of the crystal oscillator physically refer to mass of the oscillator.

Test: Crystal Oscillator - Question 5

The series capacitance in the equivalent circuit of crystal oscillator represents __________

Detailed Solution for Test: Crystal Oscillator - Question 5

Series capacitance of oscillator is physically representing the complaints of oscillator.

Test: Crystal Oscillator - Question 6

The resistance in the equivalent circuit of crystal oscillator represents __________

Detailed Solution for Test: Crystal Oscillator - Question 6

Resistance in the equivalence circuit of the crystal oscillator physically refers to viscous factor of the crystal.

Test: Crystal Oscillator - Question 7

When frequency of oscillation of a crystal oscillator becomes parallel resonance frequency reactance of crystal oscillator becomes

Detailed Solution for Test: Crystal Oscillator - Question 7

When resonance frequency of oscillator becomes parallel resonance frequency the impedance of the oscillator becomes infinity.

Test: Crystal Oscillator - Question 8

When frequency of oscillation of circuit is less than series resonance frequency wS crystal oscillator act as

Detailed Solution for Test: Crystal Oscillator - Question 8

When the frequency of oscillation of crystal becomes less than that of wS the oscillator becomes capacitive and in between wS and wP it becomes inductive.

Test: Crystal Oscillator - Question 9

The reactance of crystal oscillator will be inductive if oscillator operating frequency is

Detailed Solution for Test: Crystal Oscillator - Question 9

When the frequency of oscillation of crystal becomes less than that of wS the oscillator becomes capacitive and in between wS and wP it becomes inductive.

Test: Crystal Oscillator - Question 10

The crystal can be used to replace inductor in

Detailed Solution for Test: Crystal Oscillator - Question 10

Crystal oscillator operating between wS and wP is inductive and hence we can replace it with inductor in colpitts oscillator.

Test: Crystal Oscillator - Question 11

 Which of the following effect illustrate basic working of a quartz crystal oscillator?

Detailed Solution for Test: Crystal Oscillator - Question 11

When a voltage source is applied to a quartz crystal, it begins to produce a characteristic known as the Piezo electric effect. It is a property of a crystal by which an electrical charge produces a mechanical force by changing the shape of the crystal and vice versa, a mechanical force applied to the crystal produces an electrical charge.

Test: Crystal Oscillator - Question 12

 Compared to ceramic oscillator crystal oscillators are

Test: Crystal Oscillator - Question 13

For critical application quartz oscillator is usually contained in container called

Detailed Solution for Test: Crystal Oscillator - Question 13

For critical applications the quartz oscillator is mounted in a temperature-controlled container. It is called a crystal oven, and can also be mounted on shock absorbers to prevent perturbation.

Test: Crystal Oscillator - Question 14

Crystal frequency characteristics depends on

Detailed Solution for Test: Crystal Oscillator - Question 14

The crystal frequency will only depend on internal characteristics of the crystal and hence it depends on shape or ’cut’ of the crystal.

Test: Crystal Oscillator - Question 15

The crystal resonator frequency will change according to operating time, this phenomenon is termed as

Detailed Solution for Test: Crystal Oscillator - Question 15

The crystal resonator frequency will change according to operating time, this phenomenon is termed as aging.

Test: Crystal Oscillator - Question 16

The frequency variation error occurred when crystal is re-powered after several hours is termed as

Detailed Solution for Test: Crystal Oscillator - Question 16

 When power is removed from an oscillator for several hours, then re-applied on it again, the frequency of this oscillator will stabilize at a slightly different value. This frequency variation error is called retrace error.

Test: Crystal Oscillator - Question 17

 Measure of sensitivity of crystal oscillator output frequency to supply voltage is called

Detailed Solution for Test: Crystal Oscillator - Question 17

Measure of sensitivity of crystal oscillator output frequency to supply voltage is called
Frequency pulling. It is represented in MHz/V.

Test: Crystal Oscillator - Question 18

The measure of frequency change due to non- ideal load is called

Detailed Solution for Test: Crystal Oscillator - Question 18

The measure of frequency change due to non- ideal load is called frequency pulling.

Test: Crystal Oscillator - Question 19

Which of the following parameter refer maximum available tuning voltage to the required tuning-frequency range

Detailed Solution for Test: Crystal Oscillator - Question 19

maximum available tuning voltage to the required tuning-frequency range
Is indicated by Oscillator turning port noise.

Test: Crystal Oscillator - Question 20

 Which of the following noise is caused due to sensitivity to acceleration of crystal

Detailed Solution for Test: Crystal Oscillator - Question 20

Vibration induced noise caused due to sensitivity to acceleration of crystal.

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