The Q of the crystal is of the order of____________?
The Q of the crystal is of the order of____________? A. 100 B. 1000 C. 50D. More than 10,000
The Q of the crystal is of the order of____________? A. 100 B. 1000 C. 50D. More than 10,000
In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency____________? A. Remains the same B. DecreasesC. Increases D. Insufficient data
A second condition for oscillations is____________? A. A gain of 1 around the feedback loop B. No gain around the feedback loop C. The attention of the feedback circuit must be one-third D. The feedback circuit must be capacitive
An oscillator differs from an amplifier because it_____________? A. Has more gainB. Requires no input signal C. Requires no d.c. supply D. Always has the same input
The piezoelectric effect in a crystal is___________? A. A voltage developed because of mechanical stress B. A change in resistance because of temperature C. A change in frequency because of temperature D. None of the above
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
A Wien bridge oscillator uses___________feedback? A. Only positive B. Only negativeC. Both positive and negative D. None of the above
Quartz crystal is most commonly used in crystal oscillators because:____________? A. It has superior electrical properties B. It is easily available C. It is quite inexpensive D. None of the above
The signal generator generally used in the laboratories is___________oscillator? A. Wien-bridge B. Hartely C. Crystal D. Phase shift
In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is __________? A. Increased 2 times B. Decreased 4 times C. Increased 4 timesD. Decreased 2 times