Related Questions

Piezoelectric quartz crystal resonators find application where
A Signal amplification is required
B Rectification of the signal is required
C Signal frequency control is required
D Modulation of signal is required
Quartz crystal is most commonly used in crystal oscillators because ___________
A It has superior electrical properties
B It is easily available
C It is quite inexpensive
D None of the above
The crystal oscillator frequency is very stable due to ___________ of the crystal
A Rigidity
B Vibrations
C Low Q
D High Q
If the crystal frequency changes with temperature, we say that crystal has ___________ temperature coefficient
A Positive
B Zero
C Negative
D None of the above
The materials which become polarized on the application of mechanical stress are called piezoelectric.
A True
B False
Piezoelectric materials serve as a source of ________ .
A Resonant waves
B Musical waves
C Microwaves
D Ultrasonic waves
Piezoelectric is a material
A Whose properties is midway between the constituent materials
B Which gets polarised, when stressed
C In which magnetising force reduces when current flowing through it is in-cresed
D Which changes dimensions due to applied field
If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is ___________ biased.
A forward
B reverse
C either forward or reverse
D none of the above
When the crystal current diode current is large, the bias is ___________
A forward
B inverse
C poor
D reverse
If the temperature of a crystal diode increases, then leakage current ___________
A remains the same
B decreases
C increases
D becomes zero

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