Q.1.
Which of the following is (are) the determining factor(s) of the stability of a feedback amplifier?
Q.2.
What is the minimum frequency at which a crystal will oscillate?
Q.3.
The attenuation of the three-section RC feedback phase-shift oscillator is
Q.4.
The feedback signal in a(n) ________ oscillator is derived from an inductive voltage divider in the LC circuit.
Q.5.
Which of the following improvements is (are) a result of the negative feedback in a circuit?
Q.6.
The piezoelectric effect in a crystal is ___________
Q.7.
In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is ___________
Q.8.
In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency ___________
Q.9.
If the crystal frequency changes with temperature, we say that crystal has ___________ temperature coefficient
Q.10.
The Q of the crystal is of the order of ___________
Q.11.
In Colpitt's oscillator, feedback is obtained ___________
Q.12.
An important limitation of a crystal oscillator is ___________
Q.13.
___________ is a fixed frequency oscillator