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


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20 Questions MCQ Test - Test: Hartley Oscillator

Test: Hartley Oscillator for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Test: Hartley Oscillator questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The Test: Hartley 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: Hartley Oscillator below.
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Test: Hartley Oscillator - Question 1

Recommended frequency range of Harley oscillator is

Detailed Solution for Test: Hartley Oscillator - Question 1

Recommended frequency range of Hartley oscillator is 30KHz-30MHz. Frequencies higher or lower than this range will cause distortion.

Test: Hartley Oscillator - Question 2

 Lower frequencies are not practically possible in the case of Harley oscillator because of the requirement of low ___________ value.

Detailed Solution for Test: Hartley Oscillator - Question 2

Lower frequencies are theoretically possible in Hartley oscillator however in practice, the achievement of required inductive value is a problem.

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Test: Hartley Oscillator - Question 3

Which type of feedback is used by Hartley oscillator?

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The feedback used in Hartley oscillator is Voltage series feedback.

Test: Hartley Oscillator - Question 4

Which component of Hartley oscillator is used in feedback system?

Detailed Solution for Test: Hartley Oscillator - Question 4

Center tapped inductors are used in Hartley oscillator to ensure feedback.

Test: Hartley Oscillator - Question 5

Which of the following network is used to give feedback to transistor of Hartley oscillator?

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Inductive voltage divider bias is used in Hartley oscillator.

Test: Hartley Oscillator - Question 6

How many capacitors are there in the tank circuit of Hartley oscillator

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 There is only one capacitor is used in the tank circuit of Hartley oscillator.

Test: Hartley Oscillator - Question 7

How many inductors are there in the tank circuit of Hartley oscillator?

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There are two inductors in tank circuit of Hartley oscillator.

Test: Hartley Oscillator - Question 8

The frequency of Hartley oscillator is expressed as
(Where L is effective inductance and C is the capacitance)

Detailed Solution for Test: Hartley Oscillator - Question 8

Frequency of Hartley oscillator can be expressed as 1/(2ᴨ√LC).

Test: Hartley Oscillator - Question 9

Active element used in Hartley oscillator is

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Active element used in Hartley oscillator is Transistor for amplification purposes.

Test: Hartley Oscillator - Question 10

Hartley oscillator uses which type of feedback

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As normal oscillators Hartley oscillator also uses positive feedback for sustained oscillation.

Test: Hartley Oscillator - Question 11

If L1 and L2 are the capacitance used in Hartley oscillator the effective capacitance in the equation of frequency calculation is equal to (Without considering mutual index)

Detailed Solution for Test: Hartley Oscillator - Question 11

Inductance L1 and L2 are series and hence effective capacitance without mutual inductance will be L1+L2.

Test: Hartley Oscillator - Question 12

Which configuration of transistor amplifier is used for Hartley oscillator?

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Common emitter transistor configuration is used in Hartley oscillator to ensure good oscillation.

Test: Hartley Oscillator - Question 13

Phase shift provided by overall tank circuit in Hartley oscillator is

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Phase shift provided by tank circuit is 180 degrees to obey Barkhausen’s criteria for sustained oscillation.

Test: Hartley Oscillator - Question 14

The gain device in the Hartley oscillator act as a

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The gain device in Hartley oscillator act as a band pass filter.

Test: Hartley Oscillator - Question 15

The phase difference produced by active element of Hartley oscillator is

Detailed Solution for Test: Hartley Oscillator - Question 15

The phase difference provided by active element that is transistor is 180 degrees.

Test: Hartley Oscillator - Question 16

Hartley oscillator make use of ________ amplifiers.

Detailed Solution for Test: Hartley Oscillator - Question 16

 Hartley oscillator make use of class C amplifiers because it can amplify signals less than 180 degrees and provide output of full cycle.

Test: Hartley Oscillator - Question 17

The Hartley oscillator is less preferred than due to Colpitts oscillator’s performance in

Detailed Solution for Test: Hartley Oscillator - Question 17

The Hartley oscillator is less preferred than due to Colpitts oscillator’s performance in high frequency regions due to stability.

Test: Hartley Oscillator - Question 18

Example for a self-limiting oscillator is

Detailed Solution for Test: Hartley Oscillator - Question 18

 LC oscillators are also called self-limiting oscillators.

Test: Hartley Oscillator - Question 19

What will be the oscillator frequency of Hartley oscillator if inductance L1, L2 are equal to 1mH and 2mH respectively and capacitor C is 10nF. (Neglect mutual inductance)

Detailed Solution for Test: Hartley Oscillator - Question 19

L1= 1mH
L2 = 2mH
Effective inductance L = L1+L2 = 1+2 = 3mH
C = 10μF
Oscillator frequency

Test: Hartley Oscillator - Question 20

Which configuration of transistor amplifier is used for Hartley oscillator?

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