11. A Wien bridge oscillator uses ___________ feedback A. Only positive B. Only negative C. Both positive and negative D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
12. 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
13. One condition for oscillation is ___________ A. A phase shift around the feedback loop of 180° B. A gain around the feedback loop of one-third C. A phase shift around the feedback loop of 0° D. A gain around the feedback loop of less than 1 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
14. An oscillator converts ___________ A. a.c. power into d.c. power B. d.c. power into a.c. power C. mechanical power into a.c. power D. none of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
15. 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
16. In an LC transistor oscillator, the active device is ___________ A. LC tank circuit B. Biasing circuit C. Transistor D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
17. ___________ is a fixed frequency oscillator A. Phase-shift oscillator B. Hartely-oscillator C. Colpitt's oscillator D. Crystal oscillator Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
18. 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
19. 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
20. In an LC circuit, when the capacitor is maximum, the inductor energy is ___________ A. Minimum B. Maximum C. Half-way between maximum and minimum D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
