Basic Science : Oscillators QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
11.An electronic circuit that converts energy from a DC source into a periodically varying electrical output is called |
| rectifier |
| oscillator |
| CRO |
| amplifier |
12.Energy of a wave is proportional to its |
| wavelength |
| frequency |
| amplitude |
| phase angle |
13.For oscillation, the feedback and feedback fraction must be |
| negative and 1/A |
| negative and 1/β |
| positive and 1/A |
| positive and 1/β |
14.The condition for an amplifier to work as an oscillator is, that the feedback fraction β should be |
| positive |
| negative |
| equal to the amplifier gain |
| positive and equal to the reciprocal of the amplifier gain |
15.One of the following is the essential part of an oscillatory circuit |
| inductor and resistor in series |
| resistor and capacitor in series |
| resistor and capacitor in parallel |
| inductor and capacitor in parallel |
More Oscillators QUESTIONS AND ANSWERS available in next pages
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