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Showing posts with label oDesk Electronic Design Test Answer 2015. Show all posts
Showing posts with label oDesk Electronic Design Test Answer 2015. Show all posts

Electronic Design Test Answer

A Colpitt’s oscillator uses _____.
Answers: • both a tapped inductor and a tapped capacitor

A Wien-bridge oscillator is basically a _____.
Answers: • sine-wave generator

A voltage V=300cos100t is applied to a half wave rectifier with RL =5KΩ. The rectifier may be represented by an ideal diode in series with a resistance of 1KΩ. What would be the ripple factor in this case?
Answers: • 100%

A bridge rectifier circuit has secondary voltage of 12Vr.m.s. Assume secondary resistance and diode forward resistance to be negligible. The load resistance is 100Ω. What would be the peak load current?
Answers: • 0.169 Amp

A half wave rectifier supplies power to 1000Ω load from a 110V (r.m.s) source of supply. If the forward resistance of the diode is 20Ω. What would be the efficiency of the rectifier?
Answers: • 39.73%