Basic Science : Oscillators QUESTIONS AND ANSWERS :: part1 : 6 to 10
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
6.The frequency of a transistor Hartley oscillator with L1 = 100 µH; L2 = 1 mH and C= 20 pF is |
| 1000 Hz |
| 1050 Hz |
| 1000 kHz |
| 500 kHz |
7.Which of the following produces square waveform |
| multi vibrator |
| Hartley oscillator |
| turned base oscillator |
| turned collector oscillator |
8.The expression for frequency of Hartley oscillator is |
9.Positive feedback is used in oscillators because it |
| increases selectivity |
| reduces distortion |
| increases stability |
| increases gain |
10.If an oscillator circuit consists of an inductance of (1/4π2) Hendry and a capacitance of 1 picofarad connected in parallel, then the resonant frequency of the oscillator is |
| 10 mega hertz |
| 1 mega hertz |
| 20 mega hertz |
| 100 mega hertz |
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