A Wien bridge oscillator uses___________feedback?

Related Mcqs:

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

   A. Remains the same
   B. Decreases
   C. Increases
   D. Insufficient data

2. 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

3. 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

4. Hartley oscillator is commonly used in______________?

   A. Radio receivers
   B. Radio transmitters
   C. TV receivers
   D. None of the above

5. 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

6. An oscillator differs from an amplifier because it_____________?

   A. Has more gain
   B. Requires no input signal
   C. Requires no d.c. supply
   D. Always has the same input

7. An important limitation of a crystal oscillator is____________?

   A. Its low output
   B. Its high Q
   C. Less availability of quartz crystal
   D. Its high output

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