In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency____________?

Related Mcqs:

1. A Wien bridge oscillator uses___________feedback?

   A. Only positive
   B. Only negative
   C. Both positive and negative
   D. None of the above

2. In a certain oscillator Av = 50. The attention of the feedback circuit must be___________?

   A. 1
   B. 01
   C. 10
   D. 02

3. In an LC oscillator, the frequency of oscillator is____________L or C?

   A. Proportional to square of
   B. Directly proportional to
   C. Independent of the values of
   D. Inversely proportional to square root of

4. For an oscillator to properly start, the gain around the feedback loop must initially be_________?

   A. 1
   B. Greater than 1
   C. Less than 1
   D. Equal to attenuation of feedback circuit

5. In Colpitt’s oscillator, feedback is obtained___________?

   A. A. By magnetic induction
   B. By a tickler coil
   C. From the centre of split capacitors
   D. None of the above

6. An oscillator converts __________?

   A. power into d.c. power
   B. power into a.c. power
   C. mechanical power into a.c. power
   S. none of the above

7. In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is __________?

   A. Increased 2 times
   B. Decreased 4 times
   C. Increased 4 times
   D. Decreased 2 times

8. The application where one would most likely find a crystal oscillator is____________?

   A. Radio receiver
   B. Radio transmitter
   C. AF sweep generator
   D. None of the above

9. In a phase shift oscillator, we use____________RC sections?

   A. Two
   B. Three
   C. Four
   D. None of the above

10. An oscillator produces___________oscillations?

    A. Damped
    B. Undamped
    C. Modulated
    D. None of the above