An oscillator differs from an amplifier because it_____________?

Related Mcqs:

1. 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

2. 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

3. In a phase shift oscillator, the frequency determining elements are _______________?

   A. L and C
   B. R, L and C
   C. R and C
   D. None of the above

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. A Wien bridge oscillator uses___________feedback?

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

7. ____________is a fixed frequency oscillator?

   A. Phase-shift oscillator
   B. Hartely-oscillator
   C. Colpitt’s oscillator
   D. Crystal oscillator

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

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

9. An LC oscillator cannot be used to produce ____________frequencies?

   A. High
   B. Audio
   C. Very low
   D. Very high

10. An oscillator produces___________oscillations?

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