Quartz crystal and tourmaline used in oscillators work on the principle of:

Related MCQs

• The equivalent circuit of a quartz crystal has LCR arm capacitance of 12nF and inductance of 3mH and parallel arm capacitance of 4nF. Parallel resonant frequency for the circuit is:
• In the equivalent circuit of a quartz crystal, LCR arm has an inductance of 4 mH and capacitor has a value of 4nF, then the series resonant frequency of the oscillator is:
• Parallel resonant frequency of quartz crystal is given by:
• In microwave oscillators, negative resistance transistors and diodes are used in order to generate oscillations in the circuit.
• In transistor oscillators, FET and BJT are used. Instability is achieved by:
• Oscillators operating at millimeter wavelength are difficult to realize and are also less efficient.
• In transistor oscillators, the requirement of a negative resistance device is satisfied using a varactor diode.
• A quartz crystals equivalent circuit is a series LCR circuit and has a series resonant frequency.
• In the plot of reactance v/s frequency of a crystal oscillator, the reactance between series resonant frequency and parallel resonant frequency is:
• Reactive multipliers have a disadvantage that they cannot be used at very high frequencies and they become less efficient.