OSCILLATORS - Practice Mode

1) What is the natural shape of a quartz crystal?

Cylindrical shape with pyramid at ends Cube shape with pyramid at ends Pentagonal prism with pyramid at ends Hexagonal prism with pyramid at ends

Correct Answer: Hexagonal prism with pyramid at ends

2) What is the resonant frequency range of a crystal?

Between 0.1 and 1MHZ Between 0.1 and 10 MHZ Between 0.5 and 25 MHZ Between 0.5 and 30 MhZ

Correct Answer: Between 0.5 and 30 MhZ

3) What is the difference of Colpitts oscillator compare to Hartley oscillator?

Uses split inductor Uses split capacitor Uses crystal oscillator Uses SCR combination

Correct Answer: Uses split capacitor

4) Which circuit is determined by the frequency of LC tank circuit?

Oscillator Amplifier Multiplexed Demodulator

Correct Answer: Oscillator

5) What is the percentage of charge accumulated by the capacitor at the end of 2 time constant limit?

0.4 0.5 0.632 0.864

Correct Answer: 0.864

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