Answer: 100 Hz.
- A 25 Hz
- B 50 Hz
- C 100 Hz
- D 200 Hz
Correct answer: C. 100 Hz
Explanation: A full-wave rectifier gives two output pulses per input cycle, so the ripple frequency is twice the input, 100 Hz.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.