engineering recuitment ISRO Scientist Electronics Mock Test Analog Electronics Oscillators and Feedback Amplifier Oscillator Basics
Which of the following statements are correct?
(A) Zero crossing detector is a comparator with Vref = 0
(B) An astable multivibrator is used to generate pulses of desired duration.
(C) The phase shift and wien bridge are commonly used sinewave oscillators for radio frequency.
(D) The frequency of a square wave generator is independant of trigger levels of comparator.
(E) A Triangular wave can be generated by integrating a square wave.
Choose the correct answer from the options given below:
1
(A) and (B) only
2
(A) and (C) only
3
(A) and (E) only
4
(D) and (E) only