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Electronic Mechanic Practice Test: Oscillators
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Electronic Mechanic Practice Test: Oscillators
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22 Questions

1. Which circuits commonly use parallel-fed hartley oscillators?
2. What type of waveform is produced by the series fed hartley oscillator?
3. What is the name of the circuit diagram?
4. How many time constant period is required to fully charge a capacitor?
5. What is the difference of colpitts oscillator compare to hartley oscillator?
6. Name the circuit diagram.
7. Which circuit is determined by the frequency of LC tank circuit?
8. How to overcome the problem of frequency drift in LC oscillators?
9. Which type of circuit is used in the oscillator?
10. Which type of circuit is used in the oscillator?
11. Why LC tuned circuits are not used in audio frequency oscillators?
12. Which is the transistor used to operate the colpitts oscillator?
13. What is the purpose of capacitor C4 in the RC phase shift oscillator?
14. What type of arrangement is required to sustain the oscillations of the oscillator circuit?
15. What type of feed back is used by the wein- bridge oscillator to oscillate the signal?
16. What is the name of the circuit diagram?
17. What is the name of capacitors C1 and C2 in the circuit?
18. How to improve the frequency stability in oscillator circuits?
19. How many time constants required to change a capacitor to 63.2% of its full charge voltage?
20. What is the natural shape of a quartz crystal?
21. How many time constants required to change a capacitor to 63.2% of its full charge voltage?
22. What is the resonant frequency range of a crystal?

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