19. Which of the following is an oscillator with best frequency stability ?
(a) Crystal oscillator
(b) Clapp oscillator
(c) Phase shift circuit
(d) Multi vibratorSubject Name : Electronics Engineering Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant Electronics & Communication Engineering Books
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