Oscillator Multiple Choice Questions And Answers


26. What percentage of feedback will cause oscillations?


   A.0.2%

   B.0.5%

   C.1.5%

   D.2%


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D.2%

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27. One of the following oscillator types provides extremely stable output frequency:


   A.Colpitt's oscillator

   B.Wein bridge oscillator

   C.Crystal oscillator

   D.Hartley oscillator


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C.Crystal oscillator

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28. Oscillator with best frequency stability is


   A.Crystal oscillator

   B.Hartley oscillator

   C.Clapp oscillator

   D.Phase oscillator


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A.Crystal oscillator

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29. Oscillators must employ


   A.Possitive feedback

   B.Negative feedback

   C.Neither negative nor positive feedbacks

   D.None of the above


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A.Possitive feedback

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30. The oscillators must


   A.Not have any feedback

   B.Have the positive feedback

   C.Have the negetive feedback

   D.Have negetive and positive feedbacks


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B.Have the positive feedback

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