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Oscillators(Engineering > Electrical Engineering ) Questions and Answers
Home
Topic
Engineering
Electrical Engineering
Oscillators
Question 1.
In an LC oscillator, the frequency of oscillator is ___________ L or C.
Proportional to square of
Directly proportional to
Independent of the values of
Inversely proportional to square root of
Explanation:-
Answer: Option D. ->
Inversely proportional to square root of
Question 2.
Quartz crystal is most commonly used in crystal oscillators because ___________
It has superior electrical properties
It is easily available
It is quite inexpensive
None of the above
Explanation:-
Answer: Option A. ->
It has superior electrical properties
Question 3.
In a certain oscillator Av = 50. The attention of the feedback circuit must be ___________
1
1
10
2
Explanation:-
Answer: Option D. ->
2
Question 4.
The crystal oscillator frequency is very stable due to ___________ of the crystal
Rigidity
Vibrations
Low Q
High Q
Explanation:-
Answer: Option D. ->
High Q
Question 5.
Hartley oscillator is commonly used in ___________
Radio receivers
Radio transmitters
TV receivers
None of the above
Explanation:-
Answer: Option A. ->
Radio receivers
Question 6.
An oscillator produces___________ oscillations
Damped
Undamped
Modulated
None of the above
Explanation:-
Answer: Option B. ->
Undamped
Question 7.
An LC oscillator cannot be used to produce ___________ frequencies
High
Audio
Very low
Very high
Explanation:-
Answer: Option C. ->
Very low
Question 8.
In a phase shift oscillator, we use ___________ RC sections
Two
Three
Four
None of the above
Explanation:-
Answer: Option B. ->
Three
Question 9.
The signal generator generally used in the laboratories is ___________ oscillator
Wien-bridge
Hartely
Crystal
Phase shift
Explanation:-
Answer: Option A. ->
Wien-bridge
Question 10.
An oscillator employs ___________ feedback
Positive
Negative
Neither positive nor negative
Data insufficient
Explanation:-
Answer: Option A. ->
Positive
1
2
3
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